STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1951 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.9 0.7 9.1 15.0 20.5 23.9 25.9 24.1 22.8 15.0 8.1 2.3 14.1 MINIMUN AIR TEMPERATURE (C) -2.3 -3.7 2.9 7.7 13.4 17.1 19.4 18.5 16.2 10.7 4.1 -1.1 8.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 1 1 12 9 1 0 0 0 24 DAYS WITH MINIMUM TEMP. <=-4 9 12 0 0 0 0 0 0 0 0 0 6 27 DAYS WITH FREEZING MIN.<= 0 27 23 9 2 0 0 0 0 0 0 1 19 81 TEMPERATURE RECORDS LOWEST(C) -9.0 -11.0 -3.0 -1.0 8.0 9.0 13.0 14.0 12.0 4.0 0.0 -7.0 -11.0 DAY 31 9 8 5 7 9 3 22 28 31 11 29 MAXIMUM AIR TEMPERATURE (C) 5.5 4.4 14.1 20.5 25.8 30.1 32.4 30.4 27.9 20.7 13.6 7.1 19.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 6 16 27 20 9 0 0 0 78 DAYS WITH MAXIMUM TEMP. <= 0 0 4 0 0 0 0 0 0 0 0 0 0 4 TEMPERATURE RECORDS HIGHEST(C) 12.0 12.0 21.0 27.0 33.0 34.0 36.0 36.0 32.0 27.0 19.0 13.0 36.0 DAY 23 25 28 19 24 6 26 1 1 3 9 1 DIF. BETWEEN (MAX.-MIN.) (C) 7.8 8.1 11.2 12.8 12.4 13.0 13.0 11.9 11.7 10.0 9.5 8.2 10.8 MEAN DAILY TEMP. (MDT) (C) 1.6 0.3 8.5 14.1 19.6 23.6 25.9 24.4 22.0 15.7 8.9 3.0 14.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.5 29.5 80.0 149.0 106.5 44.5 0.0 0.0 0.0 410.0 HEATING DEG. DAYS(BASE 18 0C) 508.0 494.5 295.0 126.0 30.0 0.0 0.0 0.0 0.5 83.5 264.0 464.5 2266.0 DEWPOINT (MEAN C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MIXING RATIO (G/KG) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** VAPOUR PRESSURE (HPA) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** SATURATION DEF. (HPA) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** RELATIVE HUMIDITY (MEAN %) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MAX. %) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MIN. %) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 03UTC) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 09UTC) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 15UTC) *** *** *** *** *** *** *** *** *** *** *** *** *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 5.0 17.2 1.2 6.7 11.0 3.0 0.0 1.0 28.0 6.2 3.7 10.1 93.1 DAYS WITH PRECIPITATION >=10 0 0 0 0 0 0 0 0 1 0 0 0 1 DAYS WITH PRECIPITATION >= 5 0 2 0 0 1 0 0 0 3 0 0 1 7 DAYS WITH PRECIPITATION >= 1 3 3 0 4 4 1 0 1 3 4 1 2 26 DAYS WITH PRECIPITATION 4 5 3 7 10 2 0 2 3 5 6 5 52 GREATEST DAILY PRECIPITATION 2.0 9.0 0.9 3.0 7.3 3.0 0.0 1.0 16.0 2.2 3.0 6.0 16.0 DAY 7 20 13 11 10 3 ** 10 8 19 10 7 DAY WITH THUNDER STORM 0 0 0 2 2 0 0 0 0 2 0 0 6 DAYS WITH SNOW OR SLEET 3 3 2 0 0 0 0 0 0 1 0 2 11 DAYS WITH DUST 1 1 0 1 1 3 0 0 0 2 0 1 10 WIND DIRECTION (PREVAILING) 225 360 360 225 45 360 360 360 360 360 360 360 360 PREVAILING WIND SPEED(KNOTS) 2.1 2.1 2.7 3.3 3.5 4.3 3.1 3.8 2.9 2.7 2.5 2.0 3.0 PREVAILING WIND PERCENT 26.9 26.8 22.6 26.7 18.8 41.0 41.9 50.0 43.8 36.6 27.1 35.5 32.8 CALMS PERCENT OF WIND 0.0 0.0 0.5 0.6 1.1 2.4 1.6 0.8 0.5 0.0 0.0 0.4 0.7 NO. OF WIND OBSERVATION 186 168 186 180 186 212 246 248 185 205 240 248 2490 VECTOR WIND DIRECTION (MEAN) 234 309 54 226 79 27 30 22 23 10 262 317 23 VECTOR WIND MAGNITUDE(KNOTS) 0.2 0.1 0.5 0.3 0.5 3.1 1.9 2.8 1.1 0.6 0.3 0.4 0.8 WIND STEADINESES (MEAN %) 9.5 4.8 20.8 10.7 17.9 67.4 63.3 71.8 36.7 21.4 12.5 20.0 28.6 WIND SPEED (MEAN KNOTS) 2.1 2.1 2.4 2.8 2.8 4.6 3.0 3.9 3.0 2.8 2.4 2.0 2.8 FASTEST WIND DIRECTION 270 310 230 360 230 230 360 360 90 360 360 230 90 FASTEST WIND SPEED (KNOTS) 13 6 13 24 20 24 15 24 28 18 9 9 28 DAY 5 20 16 1 6 2 12 11 12 31 1 17 DAYS WITH SKY CLEAR (0-2)/8 14 8 8 11 8 25 29 26 17 6 11 17 180 DAYS WITH P.CLOUDY (3-6)/8 12 13 15 11 13 5 2 5 12 19 13 13 133 DAYS WITH CLOUDY (7-8)/8 5 7 8 8 10 0 0 0 1 6 6 1 52 DAYS WITH VISIBILITY =< 2 KM 1 0 1 0 0 0 0 0 0 0 0 1 3 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1951 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1951 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1951 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1952 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.1 5.1 8.5 14.0 18.9 22.5 26.9 23.3 19.8 16.2 ***** ***** ***** MINIMUN AIR TEMPERATURE (C) -2.0 0.8 3.2 9.0 13.3 16.4 20.0 17.4 14.2 9.3 ***** ***** ***** DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 2 3 14 2 0 0 **** **** **** DAYS WITH MINIMUM TEMP. <=-4 8 2 1 0 0 0 0 0 0 0 **** **** **** DAYS WITH FREEZING MIN.<= 0 27 11 8 0 0 0 0 0 0 0 **** **** **** TEMPERATURE RECORDS LOWEST(C) -6.0 -4.0 -5.0 4.0 4.0 10.0 16.0 13.0 10.0 6.0 ***** ***** ***** DAY 1 15 6 19 12 4 15 27 20 22 ** ** MAXIMUM AIR TEMPERATURE (C) 4.9 9.8 13.7 20.7 25.5 29.4 31.8 29.7 26.0 22.2 ***** ***** ***** DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 7 16 28 14 3 0 **** **** **** DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 **** **** **** TEMPERATURE RECORDS HIGHEST(C) 9.0 14.0 23.0 28.0 34.0 35.0 34.0 33.0 31.0 27.0 ***** ***** ***** DAY 23 6 31 11 30 28 1 2 1 7 ** ** DIF. BETWEEN (MAX.-MIN.) (C) 6.9 9.0 10.5 11.7 12.2 13.0 11.8 12.3 11.8 12.9 ***** ***** ***** MEAN DAILY TEMP. (MDT) (C) 1.4 5.3 8.5 14.9 19.4 22.9 25.9 23.5 20.1 15.8 ***** ***** ***** COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 1.5 34.5 68.5 152.5 80.0 20.0 0.0 ****** ****** ****** HEATING DEG. DAYS(BASE 18 0C) 513.5 368.5 295.0 102.5 36.0 0.5 0.0 0.0 5.5 76.0 ****** ****** ****** DEWPOINT (MEAN C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MIXING RATIO (G/KG) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** VAPOUR PRESSURE (HPA) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** SATURATION DEF. (HPA) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** RELATIVE HUMIDITY (MEAN %) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MAX. %) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MIN. %) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 03UTC) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 09UTC) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 15UTC) *** *** *** *** *** *** *** *** *** *** *** *** *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 5.0 13.2 18.6 24.4 14.9 1.3 1.0 0.0 0.3 0.0 0.0 ****** ****** DAYS WITH PRECIPITATION >=10 0 0 0 1 0 0 0 0 0 0 0 **** **** DAYS WITH PRECIPITATION >= 5 0 1 1 1 1 0 0 0 0 0 0 **** **** DAYS WITH PRECIPITATION >= 1 2 2 6 8 5 1 1 0 0 0 0 **** **** DAYS WITH PRECIPITATION 5 5 7 10 7 3 1 0 2 0 0 **** **** GREATEST DAILY PRECIPITATION 3.0 9.6 5.0 12.0 5.0 1.0 1.0 0.0 0.2 0.0 0.0 ****** ****** DAY 11 13 2 24 8 24 20 ** 19 ** ** ** DAY WITH THUNDER STORM 0 2 0 0 3 0 0 0 1 0 0 **** **** DAYS WITH SNOW OR SLEET 3 2 0 0 0 0 0 0 0 0 0 **** **** DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 **** **** WIND DIRECTION (PREVAILING) 360 225 360 360 360 360 360 360 360 360 *** *** *** PREVAILING WIND SPEED(KNOTS) 2.4 2.4 2.1 2.4 2.7 4.1 3.8 2.5 2.6 2.3 **** **** **** PREVAILING WIND PERCENT 27.0 27.8 38.4 37.5 37.5 46.3 63.3 61.3 46.8 40.3 ***** ***** ***** CALMS PERCENT OF WIND 0.0 0.5 0.0 0.0 0.0 0.0 0.0 0.4 0.4 0.0 ***** ***** ***** NO. OF WIND OBSERVATION 248 205 219 240 248 240 188 248 231 186 76 **** 2329 VECTOR WIND DIRECTION (MEAN) 278 250 321 338 345 21 22 26 21 342 *** *** *** VECTOR WIND MAGNITUDE(KNOTS) 0.1 0.6 0.5 0.7 0.6 2.3 2.7 1.6 1.0 0.5 **** **** **** WIND STEADINESES (MEAN %) 4.5 26.1 21.7 26.9 20.7 59.0 69.2 61.5 40.0 21.7 ***** ***** ***** WIND SPEED (MEAN KNOTS) 2.2 2.3 2.3 2.6 2.9 3.9 3.9 2.6 2.5 2.3 **** **** **** FASTEST WIND DIRECTION 360 270 230 270 270 360 360 50 180 270 *** *** *** FASTEST WIND SPEED (KNOTS) 9 18 13 17 19 24 13 18 13 16 *** *** *** DAY 28 23 23 18 3 20 23 20 6 26 ** ** DAYS WITH SKY CLEAR (0-2)/8 10 12 6 10 11 25 28 30 26 26 9 **** **** DAYS WITH P.CLOUDY (3-6)/8 13 11 19 8 16 3 3 1 4 4 4 **** **** DAYS WITH CLOUDY (7-8)/8 8 6 6 12 4 2 0 0 0 1 0 **** **** DAYS WITH VISIBILITY =< 2 KM 4 3 1 0 2 0 0 0 0 0 0 **** **** DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1952 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1952 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1952 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1953 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.1 5.1 5.6 13.8 ***** ***** ***** ***** ***** ***** ***** 0.1 ***** MINIMUN AIR TEMPERATURE (C) -0.4 1.5 1.3 8.6 13.1 17.6 19.5 18.9 13.9 8.2 2.8 -2.5 8.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 6 8 6 0 0 0 0 20 DAYS WITH MINIMUM TEMP. <=-4 0 0 3 0 0 0 0 0 0 0 0 10 13 DAYS WITH FREEZING MIN.<= 0 16 9 13 1 0 0 0 0 0 3 8 27 77 TEMPERATURE RECORDS LOWEST(C) -3.0 -3.0 -6.0 0.0 8.0 10.0 18.0 14.0 9.0 -2.0 -2.0 -8.0 -8.0 DAY 15 14 26 1 5 3 4 19 27 29 6 25 MAXIMUM AIR TEMPERATURE (C) 7.5 10.6 11.3 19.9 24.7 30.0 31.1 ***** ***** ***** ***** 3.1 ***** DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 16 16 **** **** **** **** 0 **** DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 **** **** **** **** 4 **** TEMPERATURE RECORDS HIGHEST(C) 12.0 18.0 18.0 27.0 28.0 34.0 38.0 ***** ***** ***** ***** 7.0 ***** DAY 24 18 3 27 11 14 5 ** ** ** ** 8 DIF. BETWEEN (MAX.-MIN.) (C) 7.9 9.1 10.0 11.3 11.6 12.4 11.6 ***** ***** ***** ***** 5.6 ***** MEAN DAILY TEMP. (MDT) (C) 3.5 6.0 6.3 14.2 18.9 23.8 25.3 ***** ***** ***** ***** 0.3 ***** COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 2.0 77.0 104.0 ****** ****** 0.0 0.0 0.0 ****** HEATING DEG. DAYS(BASE 18 0C) 362.0 335.0 363.0 118.5 13.0 2.0 0.0 ****** ****** 0.0 57.5 548.5 ****** DEWPOINT (MEAN C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MIXING RATIO (G/KG) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** VAPOUR PRESSURE (HPA) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** SATURATION DEF. (HPA) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** RELATIVE HUMIDITY (MEAN %) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MAX. %) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MIN. %) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 03UTC) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 09UTC) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 15UTC) *** *** *** *** *** *** *** *** *** *** *** *** *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 5.5 15.6 14.4 22.0 14.2 0.7 2.7 0.0 0.0 0.3 1.6 7.8 84.8 DAYS WITH PRECIPITATION >=10 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH PRECIPITATION >= 5 0 1 1 2 1 0 0 0 0 0 0 0 5 DAYS WITH PRECIPITATION >= 1 1 5 5 6 3 0 1 0 0 0 1 3 25 DAYS WITH PRECIPITATION 8 8 12 8 11 2 4 0 0 1 3 9 66 GREATEST DAILY PRECIPITATION 4.0 7.0 8.0 8.0 7.0 0.5 2.0 0.0 0.0 0.3 1.0 3.0 8.0 DAY 13 24 21 11 28 8 26 ** ** 21 29 15 DAY WITH THUNDER STORM 1 1 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH SNOW OR SLEET 2 1 0 0 0 0 0 0 0 0 2 4 9 DAYS WITH DUST 0 0 1 1 0 0 0 0 0 0 0 0 2 WIND DIRECTION (PREVAILING) 360 360 360 360 *** *** *** *** *** *** *** 360 *** PREVAILING WIND SPEED(KNOTS) 2.0 2.0 2.3 2.3 **** **** **** **** **** **** **** 2.4 **** PREVAILING WIND PERCENT 31.0 32.1 31.5 33.2 ***** ***** ***** ***** ***** ***** ***** 31.0 ***** CALMS PERCENT OF WIND 0.6 0.0 0.0 1.6 ***** ***** ***** ***** ***** ***** ***** 1.6 ***** NO. OF WIND OBSERVATION 171 224 248 187 116 92 96 48 45 93 98 184 1602 VECTOR WIND DIRECTION (MEAN) 256 248 251 335 *** *** *** *** *** *** *** 334 *** VECTOR WIND MAGNITUDE(KNOTS) 0.5 0.5 1.0 0.3 **** **** **** **** **** **** **** 0.2 **** WIND STEADINESES (MEAN %) 23.8 21.7 34.5 11.5 ***** ***** ***** ***** ***** ***** ***** 8.0 ***** WIND SPEED (MEAN KNOTS) 2.1 2.3 2.9 2.6 **** **** **** **** **** **** **** 2.5 **** FASTEST WIND DIRECTION 230 230 230 230 *** *** *** *** *** *** *** 50 *** FASTEST WIND SPEED (KNOTS) 6 18 40 24 *** *** *** *** *** *** *** 9 *** DAY 24 25 13 21 ** ** ** ** ** ** ** 9 DAYS WITH SKY CLEAR (0-2)/8 9 8 6 8 6 18 18 11 15 15 8 9 131 DAYS WITH P.CLOUDY (3-6)/8 14 12 18 12 14 5 6 4 0 14 15 13 127 DAYS WITH CLOUDY (7-8)/8 2 8 7 10 9 0 0 1 0 2 7 9 55 DAYS WITH VISIBILITY =< 2 KM 2 0 1 1 0 0 0 0 0 0 1 1 6 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1953 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1953 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1953 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1954 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 0.1 1.8 6.5 13.2 20.0 22.7 24.3 22.8 19.7 13.7 7.9 3.2 13.0 MINIMUN AIR TEMPERATURE (C) -3.0 -1.1 2.4 8.4 13.9 17.0 19.5 17.0 14.3 8.5 4.4 0.3 8.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 9 1 0 0 0 0 10 DAYS WITH MINIMUM TEMP. <=-4 10 3 4 0 0 0 0 0 0 0 0 0 17 DAYS WITH FREEZING MIN.<= 0 30 20 10 1 0 0 0 0 0 0 4 18 83 TEMPERATURE RECORDS LOWEST(C) -9.0 -6.0 -8.0 0.0 7.0 13.0 16.0 12.0 9.0 5.0 -3.0 -3.0 -9.0 DAY 18 22 1 8 19 21 12 18 26 18 29 16 MAXIMUM AIR TEMPERATURE (C) 4.3 5.8 11.4 18.8 26.9 29.2 30.1 29.0 25.6 20.0 12.2 7.2 18.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 5 15 18 13 2 0 0 0 53 DAYS WITH MAXIMUM TEMP. <= 0 3 0 2 0 0 0 0 0 0 0 0 0 5 TEMPERATURE RECORDS HIGHEST(C) 12.0 10.0 19.0 28.0 33.0 34.0 33.0 32.0 30.0 23.0 19.0 10.0 34.0 DAY 28 5 24 28 31 1 7 14 1 4 2 24 DIF. BETWEEN (MAX.-MIN.) (C) 7.3 6.9 9.0 10.4 13.0 12.2 10.6 12.0 11.3 11.5 7.8 6.9 9.9 MEAN DAILY TEMP. (MDT) (C) 0.7 2.3 6.9 13.6 20.4 23.1 24.8 23.0 19.9 14.2 8.3 3.7 13.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 1.5 25.0 64.5 118.5 68.0 18.0 0.0 0.0 0.0 295.5 HEATING DEG. DAYS(BASE 18 0C) 537.5 438.5 344.0 147.0 9.0 0.0 0.0 0.0 7.0 117.0 291.5 442.0 2333.5 DEWPOINT (MEAN C) -3.5 -2.0 0.6 5.2 7.1 8.5 12.1 9.5 7.7 5.1 2.6 -1.1 4.3 MIXING RATIO (G/KG) 3.49 3.90 4.82 6.54 7.54 8.28 10.60 8.80 7.82 6.43 5.41 4.12 6.48 VAPOUR PRESSURE (HPA) 4.81 5.37 6.64 8.97 10.33 11.31 14.42 12.03 10.73 8.87 7.48 5.71 8.89 SATURATION DEF. (HPA) 1.51 1.72 3.65 7.15 14.24 17.16 16.69 16.59 13.03 7.30 3.48 2.07 8.72 RELATIVE HUMIDITY (MEAN %) 78 78 70 61 46 42 49 44 48 58 70 74 60 RELATIVE HUMIDITY (MAX. %) 92 91 85 77 65 57 64 59 63 75 82 84 75 RELATIVE HUMIDITY (MIN. %) 57 59 53 44 27 27 34 30 33 40 57 63 44 RELATIVE HUMIDITY (MEAN% 03UTC) 87 86 81 72 60 53 61 54 57 68 76 78 69 RELATIVE HUMIDITY (MEAN% 09UTC) 63 65 60 49 31 29 36 32 36 43 61 69 48 RELATIVE HUMIDITY (MEAN% 15UTC) 83 75 66 55 43 42 46 40 45 56 70 75 58 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 3.8 24.6 20.6 20.8 3.3 0.0 4.7 2.0 0.0 0.0 4.9 12.0 96.7 DAYS WITH PRECIPITATION >=10 0 0 0 1 0 0 0 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 5 0 2 1 1 0 0 0 0 0 0 0 1 5 DAYS WITH PRECIPITATION >= 1 2 5 6 5 1 0 2 1 0 0 1 3 26 DAYS WITH PRECIPITATION 10 11 8 12 5 1 10 2 1 1 9 5 75 GREATEST DAILY PRECIPITATION 1.5 9.2 8.0 10.1 3.0 0.0 3.4 2.0 0.0 0.0 3.0 9.0 10.1 DAY 3 8 14 7 18 ** 29 14 ** ** 7 7 DAY WITH THUNDER STORM 0 0 4 3 3 0 6 0 0 0 0 0 16 DAYS WITH SNOW OR SLEET 8 10 3 0 0 0 0 0 0 0 0 2 23 DAYS WITH DUST 0 0 0 0 1 0 0 0 0 0 0 0 1 WIND DIRECTION (PREVAILING) 360 360 360 360 360 360 360 360 360 360 225 360 360 PREVAILING WIND SPEED(KNOTS) 2.4 2.9 2.9 3.2 3.7 5.4 6.2 5.4 4.4 2.7 2.5 2.1 3.9 PREVAILING WIND PERCENT 35.9 34.4 38.7 41.7 31.5 57.9 59.3 39.5 51.7 34.3 35.0 35.9 41.2 CALMS PERCENT OF WIND 1.2 0.0 0.0 0.0 0.8 0.0 0.0 2.8 2.1 2.8 0.0 0.8 0.9 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 330 347 359 357 356 16 12 4 11 324 300 288 360 VECTOR WIND MAGNITUDE(KNOTS) 0.5 0.6 0.7 1.3 0.6 3.5 3.8 1.9 2.1 0.8 0.6 0.8 1.3 WIND STEADINESES (MEAN %) 18.5 19.4 23.3 37.1 16.7 68.6 67.9 41.3 52.5 25.8 23.1 36.4 36.1 WIND SPEED (MEAN KNOTS) 2.7 3.1 3.0 3.5 3.6 5.1 5.6 4.6 4.0 3.1 2.6 2.2 3.6 FASTEST WIND DIRECTION 200 50 310 360 230 360 360 180 360 30 120 270 30 FASTEST WIND SPEED (KNOTS) 32 18 13 18 16 18 21 18 18 36 10 8 36 DAY 12 15 13 7 13 17 28 14 14 19 26 3 DAYS WITH SKY CLEAR (0-2)/8 13 1 9 2 18 22 12 29 26 22 7 9 170 DAYS WITH P.CLOUDY (3-6)/8 13 17 11 17 11 8 16 2 4 9 13 14 135 DAYS WITH CLOUDY (7-8)/8 5 10 11 11 2 0 3 0 0 0 10 8 60 DAYS WITH VISIBILITY =< 2 KM 0 1 0 0 0 0 0 0 0 3 0 3 7 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1954 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 861.4 861.8 864.9 862.0 862.7 862.0 860.8 863.0 865.0 867.9 868.8 868.1 864.0 MAX. QFE PRESSURE IN HPA 869.2 874.0 876.7 871.1 871.0 866.0 864.0 868.4 870.5 875.7 874.5 880.0 880.0 DAY-HOUR 18- 6 22- 6 4-12 30- 6 1- 6 21- 3 31- 6 31- 6 23- 6 12- 6 29- 6 16- 6 MIN. QFE PRESSURE IN HPA 853.8 848.1 852.6 854.5 856.9 858.1 856.2 857.4 860.6 861.2 863.9 857.3 848.1 DAY-HOUR 11-18 8-18 25- 0 4-12 28-12 8-15 22-15 10-12 17-12 3- 0 6-12 7-12 MEAN QNH PRESSURE IN HPA 1012.6 1013.1 1016.6 1013.3 1014.0 1013.2 1011.8 1014.4 1016.7 1020.0 1021.0 1020.3 1015.6 MAX. QNH PRESSURE IN HPA 1021.5 1027.0 1030.0 1023.6 1023.5 1017.8 1015.6 1020.6 1023.0 1028.9 1027.5 1033.8 1033.8 DAY-HOUR 18- 6 22- 6 4-12 30- 6 1- 6 21- 3 31- 6 31- 6 23- 6 12- 6 29- 6 16- 6 MIN. QNH PRESSURE IN HPA 1003.9 997.4 1002.6 1004.7 1007.5 1008.8 1006.7 1008.0 1011.7 1012.4 1015.4 1007.9 997.4 DAY-HOUR 11-18 8-18 25- 0 4-12 28-12 8-15 22-15 10-12 17-12 3- 0 6-12 7-12 MEAN QFF PRESSURE IN HPA 1016.0 1015.4 1016.4 1008.9 1006.0 1003.7 1001.2 1004.8 1008.7 1015.5 1019.9 1022.0 1011.5 MAX. QFF PRESSURE IN HPA 1029.2 1032.8 1033.4 1017.2 1017.6 1011.7 1006.3 1011.4 1017.4 1024.7 1031.3 1038.1 1038.1 DAY-HOUR 18- 6 22- 6 2- 6 30- 3 1- 6 21- 3 12- 6 19- 3 23- 3 12- 6 29- 6 16- 3 MIN. QFF PRESSURE IN HPA 1004.9 998.7 996.6 1000.6 996.1 998.5 995.6 996.3 1002.5 1007.3 1010.4 1009.3 995.6 DAY-HOUR 28-12 8-18 25- 0 4-12 28-12 1-12 22-12 11-12 2-12 3- 0 2-12 7-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 861.2 861.6 864.9 862.0 862.8 862.1 860.7 863.1 865.0 867.8 868.7 868.1 864.0 MAX. QFE PRESSURE IN HPA 868.5 871.9 873.2 870.8 869.5 865.5 863.0 867.1 869.2 874.5 872.8 879.3 879.3 DAY 18 22 2 30 1 22 31 31 22 12 29 16 MIN. QFE PRESSURE IN HPA 854.0 850.5 852.6 855.8 858.1 859.7 858.6 858.7 862.3 861.2 864.5 861.6 850.5 DAY 12 9 25 7 28 9 22 11 17 3 25 31 MEAN QNH PRESSURE IN HPA 1012.4 1012.8 1016.5 1013.3 1014.2 1013.4 1011.8 1014.5 1016.7 1019.9 1020.9 1020.3 1015.6 MAX. QNH PRESSURE IN HPA 1020.7 1024.6 1026.0 1023.3 1021.8 1017.3 1014.4 1019.1 1021.5 1027.5 1025.6 1033.0 1033.0 DAY 18 22 2 30 1 22 31 31 22 12 29 16 MIN. QNH PRESSURE IN HPA 1004.2 1000.2 1002.6 1006.2 1008.8 1010.7 1009.4 1009.5 1013.6 1012.4 1016.1 1012.8 1000.2 DAY 12 9 25 7 28 9 22 11 17 3 25 31 MEAN QFF PRESSURE IN HPA 1015.3 1014.7 1016.1 1008.7 1006.2 1003.8 1001.2 1004.9 1008.4 1015.1 1019.4 1021.7 1011.3 MAX. QFF PRESSURE IN HPA 1027.0 1029.3 1032.1 1016.1 1015.0 1009.8 1005.2 1010.2 1015.3 1022.8 1029.0 1036.6 1036.6 DAY 18 22 2 30 1 21 12 19 23 12 29 16 MIN. QFF PRESSURE IN HPA 1006.2 1002.0 996.6 1002.8 998.3 1001.0 997.4 998.1 1004.0 1007.3 1011.7 1012.0 996.6 DAY 28 9 25 7 28 9 23 11 3 3 3 31 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 861.5 861.8 865.1 862.1 863.4 862.7 861.4 863.6 865.7 868.1 868.9 868.2 864.4 MAX. QFE PRESSURE IN HPA 868.6 872.7 873.3 870.6 870.0 866.0 863.9 867.6 870.0 874.8 873.5 879.6 879.6 DAY 18 22 2 30 1 21 20 31 23 12 29 16 MIN. QFE PRESSURE IN HPA 855.6 851.4 853.2 855.8 858.7 860.5 858.7 859.5 862.7 861.8 865.0 860.6 851.4 DAY 12 9 25 7 28 9 29 11 17 3 3 7 MEAN QNH PRESSURE IN HPA 1012.7 1013.1 1016.8 1013.4 1014.8 1014.1 1012.6 1015.1 1017.5 1020.2 1021.2 1020.4 1016.0 MAX. QNH PRESSURE IN HPA 1020.8 1025.5 1026.2 1023.1 1022.4 1017.8 1015.4 1019.7 1022.4 1027.9 1026.4 1033.3 1033.3 DAY 18 22 2 30 1 21 20 31 23 12 29 16 MIN. QNH PRESSURE IN HPA 1006.0 1001.2 1003.2 1006.2 1009.5 1011.6 1009.5 1010.4 1014.1 1013.0 1016.7 1011.7 1001.2 DAY 12 9 25 7 28 9 29 11 17 3 3 7 MEAN QFF PRESSURE IN HPA 1016.7 1015.8 1017.2 1009.8 1007.6 1005.4 1002.7 1006.2 1010.3 1016.7 1020.7 1022.7 1012.7 MAX. QFF PRESSURE IN HPA 1028.1 1031.2 1033.1 1017.2 1016.7 1011.7 1006.2 1011.4 1017.4 1024.4 1030.7 1038.1 1038.1 DAY 18 22 2 30 1 21 12 19 23 13 29 16 MIN. QFF PRESSURE IN HPA 1007.9 1003.5 998.2 1004.2 999.4 1002.3 999.6 1000.5 1006.1 1009.7 1013.8 1012.7 998.2 DAY 28 9 25 7 28 9 23 11 3 3 3 31 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1954 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 862.5 862.8 866.1 862.8 863.7 862.8 861.6 864.0 866.2 869.0 869.8 869.2 865.0 MAX. QFE PRESSURE IN HPA 869.2 874.0 874.2 871.1 871.0 866.0 864.0 868.4 870.5 875.7 874.5 880.0 880.0 DAY 18 22 2 30 1 21 31 31 23 12 29 16 MIN. QFE PRESSURE IN HPA 856.3 852.8 854.8 856.9 859.4 860.5 859.0 860.0 863.0 862.7 866.1 859.5 852.8 DAY 22 9 25 4 28 10 22 11 17 3 3 7 MEAN QNH PRESSURE IN HPA 1013.9 1014.2 1017.9 1014.1 1015.2 1014.2 1012.9 1015.5 1018.0 1021.2 1022.2 1021.4 1016.7 MAX. QNH PRESSURE IN HPA 1021.5 1027.0 1027.2 1023.6 1023.5 1017.8 1015.6 1020.6 1023.0 1028.9 1027.5 1033.8 1033.8 DAY 18 22 2 30 1 21 31 31 23 12 29 16 MIN. QNH PRESSURE IN HPA 1006.8 1002.8 1005.1 1007.5 1010.3 1011.6 1009.9 1011.0 1014.4 1014.1 1017.9 1010.4 1002.8 DAY 22 9 25 4 28 10 22 11 17 3 3 7 MEAN QFF PRESSURE IN HPA 1017.7 1016.9 1018.0 1009.8 1007.2 1004.5 1002.2 1005.9 1010.0 1016.9 1021.3 1023.6 1012.8 MAX. QFF PRESSURE IN HPA 1029.2 1032.8 1033.4 1017.0 1017.6 1009.6 1006.3 1011.3 1016.9 1024.7 1031.3 1037.9 1037.9 DAY 18 22 2 30 1 21 12 19 23 12 29 16 MIN. QFF PRESSURE IN HPA 1008.3 1005.2 999.9 1004.9 999.4 1001.5 998.4 999.9 1005.5 1009.6 1014.3 1012.5 998.4 DAY 28 9 25 4 28 9 29 11 3 3 3 7 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 861.5 862.1 865.2 862.0 862.8 861.9 860.8 863.0 864.9 867.8 868.6 867.9 864.0 MAX. QFE PRESSURE IN HPA 868.3 873.7 873.3 870.2 870.0 865.6 863.2 866.8 869.0 874.0 873.4 878.1 878.1 DAY 18 22 2 30 1 21 31 31 22 12 29 16 MIN. QFE PRESSURE IN HPA 855.3 853.4 854.3 855.8 858.4 859.2 858.1 858.8 861.8 862.5 864.5 858.3 853.4 DAY 22 9 25 4 28 9 22 11 17 3 3 7 MEAN QNH PRESSURE IN HPA 1012.7 1013.4 1016.9 1013.2 1014.1 1013.2 1011.9 1014.4 1016.6 1019.9 1020.8 1020.0 1015.6 MAX. QNH PRESSURE IN HPA 1020.5 1026.6 1026.2 1022.6 1022.4 1017.4 1014.6 1018.7 1021.3 1027.0 1026.3 1031.6 1031.6 DAY 18 22 2 30 1 21 31 31 22 12 29 16 MIN. QNH PRESSURE IN HPA 1005.6 1003.5 1004.5 1006.2 1009.2 1010.1 1008.8 1009.6 1013.0 1013.8 1016.1 1009.1 1003.5 DAY 22 9 25 4 28 9 22 11 17 3 3 7 MEAN QFF PRESSURE IN HPA 1015.5 1015.4 1016.4 1008.4 1005.4 1003.0 1000.7 1004.1 1008.0 1014.7 1019.1 1021.3 1011.0 MAX. QFF PRESSURE IN HPA 1026.9 1031.9 1032.2 1015.0 1015.8 1008.8 1005.0 1009.6 1014.6 1021.9 1029.2 1034.9 1034.9 DAY 18 22 2 30 1 21 12 19 23 12 29 16 MIN. QFF PRESSURE IN HPA 1005.9 1005.8 998.9 1002.6 997.2 999.4 997.0 998.1 1003.6 1008.3 1011.6 1010.7 997.0 DAY 28 9 25 4 28 9 22 11 10 3 2 7 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 860.8 861.2 864.3 861.0 861.4 860.9 859.9 862.1 863.8 866.9 867.8 867.3 863.1 MAX. QFE PRESSURE IN HPA 867.6 872.3 876.7 868.5 865.8 865.0 862.7 865.5 868.4 872.8 872.0 876.6 876.7 DAY 15 22 4 29 24 21 31 31 22 12 29 16 MIN. QFE PRESSURE IN HPA 854.5 851.4 853.2 854.5 856.9 858.3 856.6 857.4 860.6 862.0 863.9 857.3 851.4 DAY 28 8 25 4 28 9 22 10 17 3 6 7 MEAN QNH PRESSURE IN HPA 1011.9 1012.3 1015.9 1012.1 1012.6 1012.0 1010.9 1013.4 1015.4 1018.9 1019.9 1019.4 1014.5 MAX. QNH PRESSURE IN HPA 1019.7 1025.0 1030.0 1020.7 1017.6 1016.7 1014.1 1017.3 1020.6 1025.6 1024.7 1029.9 1030.0 DAY 15 22 4 29 24 21 31 31 22 12 29 16 MIN. QNH PRESSURE IN HPA 1004.7 1001.2 1003.2 1004.7 1007.5 1009.1 1007.1 1008.0 1011.7 1013.3 1015.4 1007.9 1001.2 DAY 28 8 25 4 28 9 22 10 17 3 6 7 MEAN QFF PRESSURE IN HPA 1014.8 1014.2 1015.1 1007.5 1004.4 1002.4 1000.2 1003.6 1007.2 1014.0 1018.4 1020.6 1010.2 MAX. QFF PRESSURE IN HPA 1025.0 1029.9 1033.4 1012.6 1010.0 1009.4 1004.6 1008.3 1013.9 1020.4 1027.8 1033.3 1033.4 DAY 18 22 4 30 19 21 31 19 22 12 29 16 MIN. QFF PRESSURE IN HPA 1004.9 1002.5 997.9 1000.6 996.1 998.5 995.6 996.3 1002.5 1007.9 1010.4 1009.3 995.6 DAY 28 8 25 4 28 1 22 11 2 3 2 7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1954 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 861.4 861.5 864.3 861.3 861.7 861.1 859.9 862.1 864.2 867.4 868.7 868.1 863.5 MAX. QFE PRESSURE IN HPA 868.0 872.4 872.4 869.4 869.1 864.7 862.7 865.7 869.8 874.0 872.6 878.0 878.0 DAY 15 22 2 29 1 21 31 31 22 12 26 15 MIN. QFE PRESSURE IN HPA 855.0 849.4 855.0 856.0 857.4 858.1 856.2 857.7 861.0 862.4 864.0 860.2 849.4 DAY 28 8 25 4 27 8 22 10 17 2 2 7 MEAN QNH PRESSURE IN HPA 1012.5 1012.7 1015.9 1012.4 1013.0 1012.3 1010.9 1013.4 1015.8 1019.5 1020.9 1020.2 1014.9 MAX. QNH PRESSURE IN HPA 1020.1 1025.1 1025.1 1021.7 1021.4 1016.4 1014.1 1017.5 1022.2 1027.0 1025.4 1031.5 1031.5 DAY 15 22 2 29 1 21 31 31 22 12 26 15 MIN. QNH PRESSURE IN HPA 1005.3 998.9 1005.3 1006.4 1008.0 1008.8 1006.7 1008.4 1012.1 1013.7 1015.6 1011.2 998.9 DAY 28 8 25 4 27 8 22 10 17 2 2 7 MEAN QFF PRESSURE IN HPA 1016.4 1015.4 1016.1 1008.7 1005.6 1003.4 1000.9 1004.2 1008.6 1015.8 1020.4 1022.4 1011.5 MAX. QFF PRESSURE IN HPA 1025.9 1030.5 1031.8 1015.5 1016.3 1009.7 1004.8 1009.4 1016.4 1023.9 1029.2 1035.5 1035.5 DAY 18 22 2 29 1 21 31 18 22 12 29 15 MIN. QFF PRESSURE IN HPA 1006.8 1000.5 1001.2 1003.8 997.3 999.4 995.9 997.8 1004.4 1009.5 1012.1 1012.7 995.9 DAY 28 8 24 4 28 8 22 10 2 3 2 7 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 861.4 862.0 865.1 862.4 862.9 862.0 860.9 863.2 865.2 868.1 869.1 868.3 864.2 MAX. QFE PRESSURE IN HPA 867.9 872.1 873.3 870.7 869.1 865.7 864.0 866.7 870.0 874.5 873.4 879.5 879.5 DAY 15 22 1 29 1 21 31 30 22 11 26 15 MIN. QFE PRESSURE IN HPA 853.8 848.1 854.5 857.6 859.0 859.0 857.6 858.2 862.5 862.4 864.6 861.5 848.1 DAY 11 8 24 9 27 8 28 10 17 2 24 7 MEAN QNH PRESSURE IN HPA 1012.6 1013.3 1016.8 1013.7 1014.3 1013.3 1012.0 1014.6 1017.0 1020.3 1021.3 1020.5 1015.8 MAX. QNH PRESSURE IN HPA 1020.0 1024.8 1026.2 1023.2 1021.4 1017.5 1015.6 1018.6 1022.4 1027.5 1026.3 1033.2 1033.2 DAY 15 22 1 29 1 21 31 30 22 11 26 15 MIN. QNH PRESSURE IN HPA 1003.9 997.4 1004.7 1008.3 1009.9 1009.9 1008.3 1008.9 1013.8 1013.7 1016.2 1012.7 997.4 DAY 11 8 24 9 27 8 28 10 17 2 24 7 MEAN QFF PRESSURE IN HPA 1016.4 1016.0 1016.7 1009.4 1006.2 1003.7 1001.4 1005.0 1009.0 1015.9 1020.5 1022.6 1011.9 MAX. QFF PRESSURE IN HPA 1026.2 1030.1 1032.5 1016.3 1015.2 1009.2 1005.8 1009.9 1015.8 1022.5 1028.0 1036.8 1036.8 DAY 17 22 1 29 1 21 31 19 22 11 26 15 MIN. QFF PRESSURE IN HPA 1006.9 998.7 999.6 1003.8 999.5 999.9 997.1 998.1 1004.8 1009.9 1012.3 1014.2 997.1 DAY 11 8 24 1 28 8 22 10 2 2 2 30 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 861.3 861.7 864.9 862.6 862.9 862.1 860.8 863.2 865.1 868.0 868.8 868.1 864.1 MAX. QFE PRESSURE IN HPA 868.6 871.4 873.1 870.9 869.7 865.6 863.5 866.9 869.2 874.5 872.6 879.5 879.5 DAY 17 22 1 29 1 21 31 30 21 11 26 15 MIN. QFE PRESSURE IN HPA 853.9 849.6 853.4 857.4 858.6 859.4 858.1 858.6 862.2 861.8 864.1 862.1 849.6 DAY 11 8 24 4 27 8 28 10 16 2 24 30 MEAN QNH PRESSURE IN HPA 1012.5 1012.9 1016.5 1013.9 1014.3 1013.3 1011.9 1014.6 1016.8 1020.1 1021.1 1020.3 1015.7 MAX. QNH PRESSURE IN HPA 1020.8 1024.0 1025.9 1023.4 1022.1 1017.4 1015.0 1018.9 1021.5 1027.5 1025.4 1033.2 1033.2 DAY 17 22 1 29 1 21 31 30 21 11 26 15 MIN. QNH PRESSURE IN HPA 1004.0 999.1 1003.5 1008.0 1009.4 1010.3 1008.8 1009.4 1013.5 1013.0 1015.7 1013.4 999.1 DAY 11 8 24 4 27 8 28 10 16 2 24 30 MEAN QFF PRESSURE IN HPA 1015.4 1015.0 1015.9 1009.1 1005.6 1003.2 1000.8 1004.3 1008.4 1015.0 1019.5 1021.6 1011.1 MAX. QFF PRESSURE IN HPA 1026.4 1028.7 1032.0 1016.3 1015.3 1008.7 1004.6 1009.2 1014.2 1022.0 1027.7 1036.5 1036.5 DAY 17 22 1 29 1 20 31 19 30 12 28 15 MIN. QFF PRESSURE IN HPA 1005.9 1000.6 997.3 1003.9 998.9 999.7 996.9 998.1 1004.3 1008.0 1012.2 1012.8 996.9 DAY 27 8 24 1 27 8 22 10 2 2 2 30 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1955 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.8 5.4 7.7 14.4 18.2 23.2 26.3 25.7 20.5 13.4 9.0 3.4 14.1 MINIMUN AIR TEMPERATURE (C) -1.4 0.9 3.6 9.2 12.9 17.8 21.1 20.3 15.3 8.3 5.0 0.8 9.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 4 20 17 0 0 0 0 41 DAYS WITH MINIMUM TEMP. <=-4 5 2 0 0 0 0 0 0 0 0 0 0 7 DAYS WITH FREEZING MIN.<= 0 27 11 5 2 0 0 0 0 0 0 0 14 59 TEMPERATURE RECORDS LOWEST(C) -5.0 -5.0 -2.0 -2.0 7.0 13.0 18.0 16.0 11.0 4.0 1.0 -2.0 -5.0 DAY 10 25 5 12 9 12 6 18 24 14 18 21 MAXIMUM AIR TEMPERATURE (C) 6.4 11.5 13.1 21.1 24.4 30.2 33.3 32.5 26.6 19.7 14.9 7.6 20.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 1 19 30 21 2 0 0 0 73 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 9.0 18.0 18.0 29.0 30.0 38.0 37.0 37.0 31.0 24.0 20.0 13.0 38.0 DAY 15 28 3 6 30 9 26 2 2 7 3 1 DIF. BETWEEN (MAX.-MIN.) (C) 7.8 10.6 9.5 11.9 11.5 12.4 12.2 12.2 11.3 11.4 9.9 6.8 10.6 MEAN DAILY TEMP. (MDT) (C) 2.5 6.2 8.3 15.1 18.6 24.0 27.2 26.4 20.9 14.0 10.0 4.2 14.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 9.0 95.5 192.5 167.0 24.0 0.0 0.0 0.0 488.0 HEATING DEG. DAYS(BASE 18 0C) 481.0 330.5 300.0 99.5 30.0 0.0 0.0 0.0 2.0 123.5 240.5 428.0 2035.0 DEWPOINT (MEAN C) -3.0 -2.6 0.6 2.9 6.5 8.8 12.3 11.8 9.4 4.2 0.5 -1.2 4.2 MIXING RATIO (G/KG) 3.59 3.71 4.75 5.71 7.14 8.41 10.66 10.25 8.71 6.04 4.67 4.11 6.48 VAPOUR PRESSURE (HPA) 4.98 5.12 6.53 7.85 9.81 11.50 14.47 13.95 11.93 8.35 6.46 5.66 8.88 SATURATION DEF. (HPA) 2.12 4.25 4.36 9.72 11.92 18.01 20.74 20.54 12.84 7.59 5.38 2.25 9.98 RELATIVE HUMIDITY (MEAN %) 72 58 63 48 49 41 43 44 50 55 57 73 54 RELATIVE HUMIDITY (MAX. %) 84 74 79 65 63 55 56 58 64 67 70 83 68 RELATIVE HUMIDITY (MIN. %) 56 41 47 33 35 30 31 30 36 41 42 60 40 RELATIVE HUMIDITY (MEAN% 03UTC) 78 69 72 59 59 51 52 55 61 64 67 78 64 RELATIVE HUMIDITY (MEAN% 09UTC) 63 45 54 38 37 31 32 33 39 43 46 64 44 RELATIVE HUMIDITY (MEAN% 15UTC) 70 53 58 41 44 37 41 39 48 54 56 72 51 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 10.2 0.1 47.9 8.2 11.0 0.0 0.0 0.0 6.0 0.0 7.0 11.4 101.8 DAYS WITH PRECIPITATION >=10 0 0 1 0 0 0 0 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 5 1 0 4 0 0 0 0 0 0 0 1 1 7 DAYS WITH PRECIPITATION >= 1 1 0 11 3 4 0 0 0 2 0 1 2 24 DAYS WITH PRECIPITATION 7 1 13 8 7 1 1 0 4 0 1 6 49 GREATEST DAILY PRECIPITATION 9.0 0.1 12.0 4.0 4.2 0.0 0.0 0.0 4.0 0.0 7.0 6.0 12.0 DAY 6 2 13 9 22 ** ** ** 18 ** 15 5 DAY WITH THUNDER STORM 0 0 3 3 1 0 2 0 2 0 1 1 13 DAYS WITH SNOW OR SLEET 4 3 4 0 0 0 0 0 0 0 0 2 13 DAYS WITH DUST 0 2 0 0 2 0 0 0 1 0 3 0 8 WIND DIRECTION (PREVAILING) 225 225 360 360 360 360 360 360 360 360 360 360 360 PREVAILING WIND SPEED(KNOTS) 2.8 4.5 3.2 3.3 5.0 4.8 4.8 4.2 4.8 3.2 3.5 3.0 4.0 PREVAILING WIND PERCENT 32.3 34.8 34.7 33.3 44.4 50.0 56.0 56.9 51.7 35.9 33.3 35.1 39.8 CALMS PERCENT OF WIND 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.4 0.0 0.0 0.0 0.4 0.1 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 260 238 323 280 350 6 26 24 8 345 287 322 350 VECTOR WIND MAGNITUDE(KNOTS) 0.6 1.5 0.7 1.3 1.7 2.5 3.2 2.8 2.2 0.9 0.9 0.7 1.1 WIND STEADINESES (MEAN %) 22.2 40.5 20.0 27.7 33.3 49.0 66.7 63.6 50.0 26.5 22.0 21.2 26.8 WIND SPEED (MEAN KNOTS) 2.7 3.7 3.5 4.7 5.1 5.1 4.8 4.4 4.4 3.4 4.1 3.3 4.1 FASTEST WIND DIRECTION 360 240 230 230 230 270 360 90 360 360 310 230 230 FASTEST WIND SPEED (KNOTS) 8 19 18 20 18 18 18 18 18 14 18 16 20 DAY 27 9 17 11 20 10 8 20 13 9 3 20 DAYS WITH SKY CLEAR (0-2)/8 14 10 4 13 9 21 26 29 28 22 11 9 196 DAYS WITH P.CLOUDY (3-6)/8 8 12 14 12 14 9 5 2 2 6 17 15 116 DAYS WITH CLOUDY (7-8)/8 9 6 13 5 8 0 0 0 0 3 2 7 53 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 0 0 0 0 0 0 0 1 1 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1955 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 867.4 862.8 861.9 863.8 863.9 862.2 858.8 860.8 864.4 867.7 866.5 864.0 863.7 MAX. QFE PRESSURE IN HPA 874.6 870.2 890.6 869.9 869.6 867.6 875.9 867.0 882.0 872.4 873.8 876.2 890.6 DAY-HOUR 9- 6 8- 6 6-21 1-18 9- 3 2- 3 4-18 21- 3 11- 0 13- 6 12- 6 2- 6 MIN. QFE PRESSURE IN HPA 861.3 850.0 851.3 850.4 852.8 855.6 851.6 853.7 857.2 862.6 859.0 855.4 850.0 DAY-HOUR 25- 0 23-12 4-12 10-12 3- 9 30-15 29-12 6-15 1-12 7-12 23-12 29- 9 MEAN QNH PRESSURE IN HPA 1019.4 1014.2 1013.2 1015.3 1015.4 1013.5 1009.6 1011.9 1016.0 1019.8 1018.4 1015.5 1015.2 MAX. QNH PRESSURE IN HPA 1027.6 1022.6 1045.9 1022.3 1021.9 1019.7 1029.1 1019.0 1036.1 1025.1 1026.7 1029.5 1045.9 DAY-HOUR 9- 6 8- 6 6-21 1-18 9- 3 2- 3 4-18 21- 3 11- 0 13- 6 12- 6 2- 6 MIN. QNH PRESSURE IN HPA 1012.5 999.6 1001.1 1000.0 1002.8 1006.0 1001.4 1003.8 1007.8 1014.0 1009.9 1005.7 999.6 DAY-HOUR 25- 0 23-12 4-12 10-12 3- 9 30-15 29-12 6-15 1-12 7-12 23-12 29- 9 MEAN QFF PRESSURE IN HPA 1022.0 1014.5 1012.0 1010.4 1008.4 1003.7 997.9 1000.6 1007.6 1015.5 1016.6 1016.9 1010.5 MAX. QFF PRESSURE IN HPA 1032.6 1026.2 1043.2 1022.7 1019.5 1012.5 1018.5 1010.9 1027.5 1023.0 1025.9 1029.6 1043.2 DAY-HOUR 9- 6 25- 3 6-21 13- 3 9- 3 2- 3 4-18 21- 3 11- 0 12-15 12- 6 2-15 MIN. QFF PRESSURE IN HPA 1013.8 997.1 996.6 995.9 994.4 994.4 989.0 991.2 997.2 1006.7 1006.0 1006.4 989.0 DAY-HOUR 25-12 23-12 4- 0 10- 9 3- 9 30-15 29-12 6-12 1-12 7-12 23-12 29- 9 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 867.2 862.7 861.6 863.9 863.8 862.4 858.8 861.1 864.9 867.6 866.4 863.5 863.7 MAX. QFE PRESSURE IN HPA 872.4 868.8 869.3 868.2 869.0 867.1 864.5 866.2 882.0 871.2 872.5 872.4 882.0 DAY 10 9 23 2 9 2 10 21 11 13 12 3 MIN. QFE PRESSURE IN HPA 861.3 855.5 851.7 852.4 854.2 857.5 853.4 855.4 859.8 863.0 860.3 855.8 851.7 DAY 25 11 4 10 3 30 29 7 1 7 23 29 MEAN QNH PRESSURE IN HPA 1019.2 1014.1 1012.9 1015.4 1015.3 1013.7 1009.6 1012.2 1016.6 1019.7 1018.3 1014.9 1015.2 MAX. QNH PRESSURE IN HPA 1025.1 1021.0 1021.6 1020.3 1021.3 1019.1 1016.1 1018.1 1036.1 1023.8 1025.2 1025.1 1036.1 DAY 10 9 23 2 9 2 10 21 11 13 12 3 MIN. QNH PRESSURE IN HPA 1012.5 1005.9 1001.5 1002.3 1004.4 1008.1 1003.5 1005.7 1010.8 1014.4 1011.3 1006.2 1001.5 DAY 25 11 4 10 3 30 29 7 1 7 23 29 MEAN QFF PRESSURE IN HPA 1021.4 1014.0 1011.4 1010.4 1008.4 1004.1 997.9 1000.8 1007.9 1015.0 1016.1 1016.0 1010.3 MAX. QFF PRESSURE IN HPA 1029.1 1023.7 1021.1 1020.5 1018.4 1011.0 1006.5 1009.1 1027.5 1021.2 1023.3 1026.1 1029.1 DAY 10 25 23 13 9 2 9 22 11 13 12 3 MIN. QFF PRESSURE IN HPA 1013.9 1003.7 996.6 996.4 996.0 996.7 991.2 992.4 1000.2 1007.7 1008.2 1007.0 991.2 DAY 25 23 4 10 3 30 29 7 1 7 24 29 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 867.4 863.0 862.2 864.2 864.2 863.1 859.6 861.7 865.0 868.0 866.6 864.0 864.1 MAX. QFE PRESSURE IN HPA 873.4 868.9 870.0 869.0 869.6 867.6 865.0 867.0 870.6 871.4 872.6 875.3 875.3 DAY 9 8 22 2 9 2 10 21 22 12 12 2 MIN. QFE PRESSURE IN HPA 861.7 853.9 855.6 852.0 854.0 858.6 853.8 856.5 860.1 863.5 860.5 855.5 852.0 DAY 25 23 13 10 3 29 29 7 1 7 23 29 MEAN QNH PRESSURE IN HPA 1019.5 1014.5 1013.6 1015.8 1015.8 1014.6 1010.5 1012.9 1016.7 1020.1 1018.5 1015.5 1015.7 MAX. QNH PRESSURE IN HPA 1026.3 1021.1 1022.4 1021.3 1021.9 1019.7 1016.7 1019.0 1023.1 1024.0 1025.4 1028.4 1028.4 DAY 9 8 22 2 9 2 10 21 22 12 12 2 MIN. QNH PRESSURE IN HPA 1012.9 1004.0 1006.0 1001.9 1004.2 1009.4 1003.9 1007.0 1011.1 1015.0 1011.6 1005.9 1001.9 DAY 25 23 13 10 3 29 29 7 1 7 23 29 MEAN QFF PRESSURE IN HPA 1022.6 1015.5 1013.1 1011.7 1009.6 1005.7 999.8 1002.5 1009.1 1016.9 1017.6 1017.4 1011.8 MAX. QFF PRESSURE IN HPA 1031.6 1026.2 1023.4 1022.7 1019.5 1012.5 1007.8 1010.9 1015.6 1022.9 1024.9 1028.8 1031.6 DAY 9 25 22 13 9 2 9 21 22 12 12 2 MIN. QFF PRESSURE IN HPA 1015.3 1002.8 1004.9 997.0 997.1 998.5 992.5 994.5 1001.5 1009.6 1009.7 1007.4 992.5 DAY 25 23 13 10 3 30 29 7 1 8 23 29 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1955 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 868.5 863.9 862.8 864.9 864.8 863.2 859.8 861.9 865.6 868.9 867.6 865.2 864.8 MAX. QFE PRESSURE IN HPA 874.6 870.2 870.8 869.6 869.5 867.4 865.0 866.8 871.0 872.4 873.8 876.2 876.2 DAY 9 8 22 1 27 2 10 21 22 13 12 2 MIN. QFE PRESSURE IN HPA 862.4 853.1 854.0 852.4 854.4 858.4 853.8 856.5 860.3 864.8 861.4 856.5 852.4 DAY 25 23 4 10 3 30 29 7 1 7 23 29 MEAN QNH PRESSURE IN HPA 1020.7 1015.5 1014.2 1016.6 1016.5 1014.7 1010.8 1013.2 1017.4 1021.2 1019.6 1016.9 1016.4 MAX. QNH PRESSURE IN HPA 1027.6 1022.6 1023.3 1021.9 1021.8 1019.4 1016.7 1018.7 1023.5 1025.1 1026.7 1029.5 1029.5 DAY 9 8 22 1 27 2 10 21 22 13 12 2 MIN. QNH PRESSURE IN HPA 1013.7 1003.1 1004.2 1002.3 1004.6 1009.2 1003.9 1007.0 1011.3 1016.5 1012.6 1007.0 1002.3 DAY 25 23 4 10 3 30 29 7 1 7 23 29 MEAN QFF PRESSURE IN HPA 1023.7 1016.3 1013.4 1011.7 1009.3 1004.7 999.1 1001.9 1008.9 1017.0 1018.1 1018.6 1011.9 MAX. QFF PRESSURE IN HPA 1032.6 1026.1 1023.3 1021.3 1017.8 1010.6 1006.7 1010.0 1015.7 1022.9 1025.9 1029.6 1032.6 DAY 9 25 22 13 9 2 9 22 22 13 12 2 MIN. QFF PRESSURE IN HPA 1016.1 1001.7 1000.5 997.8 997.2 997.4 992.1 994.1 1001.4 1009.5 1009.9 1008.7 992.1 DAY 25 23 4 10 3 30 29 7 1 8 23 29 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 867.3 863.0 862.0 864.0 863.8 862.3 858.7 860.7 864.2 867.6 866.1 863.8 863.6 MAX. QFE PRESSURE IN HPA 873.7 869.6 870.0 869.8 868.5 866.4 863.8 866.0 869.5 871.3 872.8 875.2 875.2 DAY 9 8 22 1 18 2 9 21 21 13 12 2 MIN. QFE PRESSURE IN HPA 861.7 851.4 855.3 851.0 852.8 857.4 853.3 855.5 858.8 863.4 860.0 855.4 851.0 DAY 25 23 4 10 3 30 29 7 1 7 23 29 MEAN QNH PRESSURE IN HPA 1019.3 1014.5 1013.3 1015.5 1015.4 1013.6 1009.5 1011.8 1015.8 1019.7 1018.0 1015.4 1015.1 MAX. QNH PRESSURE IN HPA 1026.6 1021.9 1022.4 1022.2 1020.7 1018.3 1015.3 1017.8 1021.8 1023.9 1025.6 1028.3 1028.3 DAY 9 8 22 1 18 2 9 21 21 13 12 2 MIN. QNH PRESSURE IN HPA 1012.9 1001.2 1005.6 1000.7 1002.8 1008.0 1003.4 1005.9 1009.6 1014.9 1011.0 1005.7 1000.7 DAY 25 23 4 10 3 30 29 7 1 7 23 29 MEAN QFF PRESSURE IN HPA 1021.4 1014.2 1011.5 1010.1 1007.7 1003.1 997.1 999.9 1006.8 1014.7 1015.5 1016.3 1009.9 MAX. QFF PRESSURE IN HPA 1030.6 1024.0 1021.8 1019.6 1016.0 1009.3 1004.9 1008.4 1013.4 1020.7 1023.8 1028.5 1030.6 DAY 9 25 22 12 9 2 9 21 22 13 12 2 MIN. QFF PRESSURE IN HPA 1014.6 998.1 1001.4 995.9 994.4 995.6 990.7 992.0 998.9 1007.6 1007.2 1006.4 990.7 DAY 25 23 4 10 3 30 29 7 1 7 23 29 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 866.5 861.8 860.6 862.7 862.9 861.1 857.5 859.5 863.0 866.8 865.5 863.4 862.6 MAX. QFE PRESSURE IN HPA 873.2 868.8 868.7 867.5 867.5 865.4 863.5 865.0 868.4 870.5 871.8 874.2 874.2 DAY 9 8 22 1 18 2 9 21 22 12 12 2 MIN. QFE PRESSURE IN HPA 861.3 850.0 851.3 850.4 853.0 855.9 851.6 854.0 857.2 862.6 859.0 855.8 850.0 DAY 25 23 4 10 3 30 29 6 1 7 23 29 MEAN QNH PRESSURE IN HPA 1018.4 1013.1 1011.7 1014.1 1014.3 1012.2 1008.1 1010.4 1014.4 1018.7 1017.3 1014.8 1014.0 MAX. QNH PRESSURE IN HPA 1026.0 1021.0 1020.9 1019.5 1019.5 1017.1 1015.0 1016.7 1020.6 1023.0 1024.4 1027.2 1027.2 DAY 9 8 22 1 18 2 9 21 22 12 12 2 MIN. QNH PRESSURE IN HPA 1012.5 999.6 1001.1 1000.0 1003.0 1006.3 1001.4 1004.2 1007.8 1014.0 1009.9 1006.2 999.6 DAY 25 23 4 10 3 30 29 6 1 7 23 29 MEAN QFF PRESSURE IN HPA 1020.5 1012.9 1010.1 1008.9 1007.3 1002.4 996.2 998.9 1005.6 1013.9 1015.0 1015.9 1009.0 MAX. QFF PRESSURE IN HPA 1029.4 1021.8 1020.3 1018.9 1015.1 1008.8 1005.0 1007.7 1012.7 1020.7 1023.0 1027.7 1029.4 DAY 9 8 22 12 9 2 9 21 30 12 12 2 MIN. QFF PRESSURE IN HPA 1013.8 997.1 997.2 997.1 995.4 994.4 989.0 991.2 997.2 1006.7 1006.0 1006.7 989.0 DAY 25 23 4 10 3 30 29 6 1 7 23 29 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1955 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 867.2 862.3 861.2 862.9 863.3 861.2 857.6 859.8 863.5 867.4 866.4 864.1 863.1 MAX. QFE PRESSURE IN HPA 873.4 869.4 869.5 867.7 868.1 866.0 863.5 865.2 869.0 871.5 872.6 875.1 875.1 DAY 9 8 22 1 18 1 9 21 22 12 12 2 MIN. QFE PRESSURE IN HPA 861.4 852.0 855.4 853.4 855.0 855.6 851.6 853.7 857.3 863.6 860.5 857.4 851.6 DAY 24 23 3 10 2 30 29 6 1 6 23 29 MEAN QNH PRESSURE IN HPA 1019.2 1013.6 1012.4 1014.3 1014.7 1012.3 1008.3 1010.7 1015.0 1019.4 1018.3 1015.6 1014.5 MAX. QNH PRESSURE IN HPA 1026.3 1021.7 1021.8 1019.8 1020.2 1017.8 1015.0 1016.9 1021.3 1024.1 1025.4 1028.2 1028.2 DAY 9 8 22 1 18 1 9 21 22 12 12 2 MIN. QNH PRESSURE IN HPA 1012.6 1001.9 1005.7 1003.5 1005.3 1006.0 1001.4 1003.8 1007.9 1015.1 1011.6 1008.0 1001.4 DAY 24 23 3 10 2 30 29 6 1 6 23 29 MEAN QFF PRESSURE IN HPA 1022.3 1014.4 1011.8 1010.2 1008.4 1003.2 997.4 1000.2 1007.4 1016.0 1017.4 1017.5 1010.5 MAX. QFF PRESSURE IN HPA 1031.4 1023.7 1022.9 1021.6 1016.7 1009.9 1005.8 1008.9 1015.0 1023.0 1025.7 1029.6 1031.4 DAY 9 8 22 12 8 1 9 21 30 12 12 2 MIN. QFF PRESSURE IN HPA 1015.5 1001.2 1003.4 1000.5 997.8 994.4 989.7 991.8 998.3 1009.3 1008.9 1009.7 989.7 DAY 24 23 3 9 2 30 29 6 1 7 23 29 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 867.5 862.8 862.0 863.9 864.3 862.3 859.4 860.9 864.5 867.9 866.7 864.2 863.9 MAX. QFE PRESSURE IN HPA 873.5 869.5 870.5 869.9 869.4 867.2 875.9 866.0 870.0 871.7 872.0 874.6 875.9 DAY 9 8 22 1 18 1 4 21 21 12 11 2 MIN. QFE PRESSURE IN HPA 861.8 854.4 853.9 854.9 855.8 857.6 854.0 854.9 858.7 864.0 860.9 858.0 853.9 DAY 24 23 3 10 2 30 28 6 1 6 22 28 MEAN QNH PRESSURE IN HPA 1019.6 1014.2 1013.3 1015.5 1015.9 1013.6 1010.3 1012.0 1016.1 1020.0 1018.7 1015.8 1015.4 MAX. QNH PRESSURE IN HPA 1026.4 1021.8 1023.0 1022.3 1021.7 1019.2 1029.1 1017.8 1022.4 1024.3 1024.7 1027.6 1029.1 DAY 9 8 22 1 18 1 4 21 21 12 11 2 MIN. QNH PRESSURE IN HPA 1013.0 1004.6 1004.0 1005.2 1006.2 1008.3 1004.2 1005.2 1009.5 1015.6 1012.0 1008.7 1004.0 DAY 24 23 3 10 2 30 28 6 1 6 22 28 MEAN QFF PRESSURE IN HPA 1022.6 1015.0 1012.4 1010.6 1008.7 1003.6 998.7 1000.8 1007.7 1015.9 1017.1 1017.5 1010.9 MAX. QFF PRESSURE IN HPA 1031.4 1023.5 1023.0 1021.3 1017.1 1010.2 1018.5 1009.2 1015.3 1022.4 1024.5 1029.0 1031.4 DAY 9 8 22 12 8 1 4 21 30 12 12 2 MIN. QFF PRESSURE IN HPA 1015.3 1004.4 1001.0 999.9 998.5 996.7 992.3 992.1 999.3 1008.3 1009.6 1010.4 992.1 DAY 24 23 3 9 2 30 28 6 1 7 22 18 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 867.4 862.7 862.9 863.8 864.1 862.2 858.8 860.9 864.5 867.7 866.6 863.8 863.8 MAX. QFE PRESSURE IN HPA 872.9 869.1 890.6 869.0 869.1 866.8 864.4 866.2 869.7 871.5 872.3 873.5 890.6 DAY 9 8 6 1 18 1 9 21 21 12 11 1 MIN. QFE PRESSURE IN HPA 861.5 855.6 852.4 853.7 854.9 857.2 853.7 855.0 859.2 863.6 860.5 856.4 852.4 DAY 24 23 3 9 2 29 28 6 1 6 22 28 MEAN QNH PRESSURE IN HPA 1019.5 1014.0 1014.3 1015.4 1015.7 1013.5 1009.6 1012.0 1016.2 1019.8 1018.5 1015.3 1015.3 MAX. QNH PRESSURE IN HPA 1025.7 1021.4 1045.9 1021.3 1021.4 1018.7 1016.0 1018.1 1022.1 1024.1 1025.0 1026.4 1045.9 DAY 9 8 6 1 18 1 9 21 21 12 11 1 MIN. QNH PRESSURE IN HPA 1012.7 1006.0 1002.3 1003.8 1005.2 1007.8 1003.8 1005.3 1010.1 1015.1 1011.6 1006.9 1002.3 DAY 24 23 3 9 2 29 28 6 1 6 22 28 MEAN QFF PRESSURE IN HPA 1021.6 1013.7 1012.6 1010.0 1008.1 1003.1 997.3 1000.2 1007.3 1014.9 1016.1 1016.4 1010.1 MAX. QFF PRESSURE IN HPA 1029.6 1022.2 1043.2 1021.0 1017.8 1009.8 1005.3 1009.1 1014.8 1021.3 1022.6 1027.2 1043.2 DAY 9 8 6 12 8 1 8 21 30 12 16 2 MIN. QFF PRESSURE IN HPA 1014.4 1004.3 997.5 997.2 996.7 995.8 991.4 991.5 999.4 1007.3 1007.9 1007.8 991.4 DAY 24 23 3 9 2 29 28 6 1 7 23 28 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1956 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 0.1 3.5 5.7 13.8 18.4 22.3 26.0 23.5 19.0 13.2 7.3 1.5 12.9 MINIMUN AIR TEMPERATURE (C) -2.8 0.2 2.1 8.9 12.0 16.6 20.9 18.5 14.1 7.1 2.2 -2.1 8.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 3 18 2 0 0 0 0 23 DAYS WITH MINIMUM TEMP. <=-4 11 4 0 1 0 0 0 0 0 0 0 12 28 DAYS WITH FREEZING MIN.<= 0 28 15 10 3 0 0 0 0 0 0 6 24 86 TEMPERATURE RECORDS LOWEST(C) -8.0 -6.0 -3.0 -4.0 6.0 11.0 18.0 16.0 7.0 2.0 -1.0 -5.0 -8.0 DAY 20 27 1 2 2 5 1 22 27 31 14 14 MAXIMUM AIR TEMPERATURE (C) 4.6 8.3 10.8 19.7 25.8 29.2 32.4 29.5 26.5 26.7 18.0 10.3 20.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 2 16 27 16 2 4 0 0 67 DAYS WITH MAXIMUM TEMP. <= 0 4 0 0 0 0 0 0 0 0 0 0 0 4 TEMPERATURE RECORDS HIGHEST(C) 10.0 14.0 18.0 27.0 31.0 35.0 36.0 33.0 31.0 31.0 23.0 21.0 36.0 DAY 31 10 9 12 20 29 10 4 25 16 11 1 DIF. BETWEEN (MAX.-MIN.) (C) 7.4 8.1 8.7 10.8 13.8 12.6 11.5 11.0 12.4 19.6 15.8 12.4 12.1 MEAN DAILY TEMP. (MDT) (C) 0.9 4.2 6.5 14.3 18.9 22.9 26.7 24.0 20.3 16.9 10.1 4.1 14.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 7.0 72.0 176.0 93.5 9.0 0.0 0.0 0.0 357.5 HEATING DEG. DAYS(BASE 18 0C) 530.5 399.0 358.0 116.5 22.0 0.0 0.0 0.0 11.5 45.5 237.5 431.0 2151.5 DEWPOINT (MEAN C) -4.2 -2.2 0.5 4.6 5.4 8.2 12.7 9.6 8.9 3.9 -1.6 -4.0 3.5 MIXING RATIO (G/KG) 3.29 3.87 4.71 6.38 6.70 8.07 10.92 8.85 8.50 5.93 3.97 3.33 6.21 VAPOUR PRESSURE (HPA) 4.55 5.34 6.46 8.75 9.18 11.03 14.83 12.11 11.64 8.19 5.50 4.61 8.52 SATURATION DEF. (HPA) 1.75 2.76 3.12 7.92 13.09 17.13 19.77 17.48 11.16 8.03 5.28 2.46 9.16 RELATIVE HUMIDITY (MEAN %) 75 68 71 56 44 42 45 43 53 56 56 70 57 RELATIVE HUMIDITY (MAX. %) 87 83 84 72 59 56 58 55 67 71 71 86 71 RELATIVE HUMIDITY (MIN. %) 60 52 56 41 31 31 34 31 39 33 31 45 40 RELATIVE HUMIDITY (MEAN% 03UTC) 82 76 79 67 55 55 56 52 62 66 67 81 67 RELATIVE HUMIDITY (MEAN% 09UTC) 63 58 61 46 35 33 35 34 41 33 31 46 43 RELATIVE HUMIDITY (MEAN% 15UTC) 76 67 67 51 39 38 41 39 51 57 55 68 54 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 23.0 26.1 39.6 36.6 0.0 0.0 0.0 0.0 0.4 0.0 0.0 0.0 125.7 DAYS WITH PRECIPITATION >=10 2 1 1 1 0 0 0 0 0 0 0 0 5 DAYS WITH PRECIPITATION >= 5 2 2 2 2 0 0 0 0 0 0 0 0 8 DAYS WITH PRECIPITATION >= 1 2 6 9 8 0 0 0 0 0 0 0 0 25 DAYS WITH PRECIPITATION 5 12 16 10 0 0 3 1 5 0 0 0 52 GREATEST DAILY PRECIPITATION 13.0 13.0 18.2 14.0 0.0 0.0 0.0 0.0 0.2 0.0 0.0 0.0 18.2 DAY 15 29 13 20 ** ** ** ** 8 ** ** ** DAY WITH THUNDER STORM 0 1 0 4 0 0 0 2 0 0 0 0 7 DAYS WITH SNOW OR SLEET 5 5 7 1 0 0 0 0 0 0 0 0 18 DAYS WITH DUST 0 0 0 0 1 0 1 2 0 0 1 0 5 WIND DIRECTION (PREVAILING) 225 360 360 360 360 360 360 360 360 360 225 225 360 PREVAILING WIND SPEED(KNOTS) 3.6 2.9 3.0 3.9 5.3 5.4 5.3 8.5 6.9 5.2 6.4 4.9 5.2 PREVAILING WIND PERCENT 31.0 31.9 42.3 45.8 44.0 52.9 56.5 50.8 42.4 36.0 34.4 28.5 41.7 CALMS PERCENT OF WIND 0.4 0.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 205 186 180 186 2709 VECTOR WIND DIRECTION (MEAN) 281 283 310 340 20 21 26 18 31 6 299 330 9 VECTOR WIND MAGNITUDE(KNOTS) 0.6 0.5 0.7 0.9 1.2 2.7 3.7 6.0 3.7 1.5 1.7 0.7 1.7 WIND STEADINESES (MEAN %) 18.8 16.1 20.0 23.1 20.7 49.1 67.3 69.8 57.8 28.8 28.3 14.0 33.3 WIND SPEED (MEAN KNOTS) 3.2 3.1 3.5 3.9 5.8 5.5 5.5 8.6 6.4 5.2 6.0 5.0 5.1 FASTEST WIND DIRECTION 50 230 230 360 230 360 360 360 360 270 230 90 360 FASTEST WIND SPEED (KNOTS) 16 16 18 15 25 20 18 35 18 15 13 15 35 DAY 14 25 13 28 4 11 21 7 9 5 9 31 DAYS WITH SKY CLEAR (0-2)/8 17 6 6 4 28 26 23 25 21 29 11 10 206 DAYS WITH P.CLOUDY (3-6)/8 10 14 12 12 2 4 6 6 9 2 12 10 99 DAYS WITH CLOUDY (7-8)/8 4 9 13 14 1 0 2 0 0 0 7 11 61 DAYS WITH VISIBILITY =< 2 KM 2 2 6 1 0 0 0 0 0 0 0 1 12 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1956 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 864.3 862.9 860.5 861.5 861.2 862.1 860.1 863.5 864.4 867.7 867.8 868.1 863.7 MAX. QFE PRESSURE IN HPA 871.9 869.0 866.6 869.8 894.1 868.3 866.4 870.6 871.3 873.7 875.6 874.6 894.1 DAY-HOUR 22- 6 13- 6 10- 6 16- 6 14- 3 11- 6 1-21 30- 6 29- 6 26- 6 12-18 19- 6 MIN. QFE PRESSURE IN HPA 853.0 852.5 851.0 853.7 854.3 855.5 854.6 857.2 858.5 860.3 858.0 859.3 851.0 DAY-HOUR 31-12 29-12 29-21 30-12 26- 0 28-12 19-15 4-15 12- 9 23-18 8- 9 11- 9 MEAN QNH PRESSURE IN HPA 1015.9 1014.3 1011.6 1012.7 1012.4 1013.4 1011.1 1015.0 1016.0 1019.7 1019.9 1020.2 1015.2 MAX. QNH PRESSURE IN HPA 1024.6 1021.3 1018.5 1022.2 1049.9 1020.5 1018.3 1023.1 1023.9 1026.6 1028.8 1027.6 1049.9 DAY-HOUR 22- 6 13- 6 10- 6 16- 6 14- 3 11- 6 1-21 30- 6 29- 6 26- 6 12-18 19- 6 MIN. QNH PRESSURE IN HPA 1003.0 1002.4 1000.7 1003.8 1004.5 1005.9 1004.8 1007.8 1009.3 1011.3 1008.7 1010.2 1000.7 DAY-HOUR 31-12 29-12 29-21 30-12 26- 0 28-12 19-15 4-15 12- 9 23-18 8- 9 11- 9 MEAN QFF PRESSURE IN HPA 1019.5 1015.7 1011.6 1008.1 1005.2 1004.1 999.6 1005.0 1008.5 1015.5 1019.2 1023.0 1011.2 MAX. QFF PRESSURE IN HPA 1031.2 1026.4 1020.1 1024.4 1043.2 1012.7 1009.3 1014.4 1021.5 1025.2 1029.5 1032.6 1043.2 DAY-HOUR 21-18 27- 3 14- 6 2- 6 14- 3 12- 3 30- 3 30- 3 30- 3 26- 3 13- 3 19- 6 MIN. QFF PRESSURE IN HPA 1003.4 1001.8 997.7 997.3 995.3 993.5 991.5 996.2 1000.3 1005.0 1005.8 1008.3 991.5 DAY-HOUR 31-12 24-12 29-21 27-12 26- 0 28-12 19-21 4-21 12- 9 17- 9 8- 9 10-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 864.2 862.7 860.3 861.5 860.9 862.2 860.3 863.5 ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 870.6 868.3 865.1 868.8 867.0 867.4 865.5 869.0 ****** ****** ****** ****** ****** DAY 22 27 10 16 23 12 30 30 ** ** ** ** MIN. QFE PRESSURE IN HPA 855.9 854.7 852.0 855.4 854.3 857.6 856.0 858.0 ****** ****** ****** ****** ****** DAY 31 29 30 6 26 26 20 4 ** ** ** ** MEAN QNH PRESSURE IN HPA 1015.8 1014.1 1011.4 1012.7 1012.0 1013.5 1011.3 1015.0 ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1023.1 1020.5 1016.8 1021.0 1019.0 1019.4 1017.3 1021.3 ****** ****** ****** ****** ****** DAY 22 27 10 16 23 12 30 30 ** ** ** ** MIN. QNH PRESSURE IN HPA 1006.3 1004.9 1001.9 1005.7 1004.5 1008.3 1006.4 1008.7 ****** ****** ****** ****** ****** DAY 31 29 30 6 26 26 20 4 ** ** ** ** MEAN QFF PRESSURE IN HPA 1019.0 1015.0 1011.1 1007.9 1004.8 1004.2 999.7 1005.0 ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1029.5 1025.7 1018.4 1022.9 1013.1 1012.0 1007.5 1012.4 ****** ****** ****** ****** ****** DAY 22 27 20 2 23 12 30 30 ** ** ** ** MIN. QFF PRESSURE IN HPA 1007.2 1003.6 999.1 999.4 995.3 996.4 992.4 997.3 ****** ****** ****** ****** ****** DAY 31 24 30 6 26 28 20 4 ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 864.4 863.1 860.7 861.9 862.8 863.0 861.1 864.3 865.0 868.1 867.7 868.2 864.2 MAX. QFE PRESSURE IN HPA 871.0 868.3 866.0 869.0 894.1 867.4 866.0 870.0 870.7 873.5 874.6 873.8 894.1 DAY 22 13 10 16 14 11 30 30 29 26 13 19 MIN. QFE PRESSURE IN HPA 856.2 855.0 853.6 856.0 856.6 858.0 857.2 858.7 860.6 862.6 858.5 859.6 853.6 DAY 31 29 18 30 1 28 20 4 12 17 8 11 MEAN QNH PRESSURE IN HPA 1016.0 1014.5 1011.8 1013.1 1014.1 1014.4 1012.2 1015.9 1016.7 1020.2 1019.8 1020.3 1015.8 MAX. QNH PRESSURE IN HPA 1023.5 1020.5 1017.8 1021.3 1049.9 1019.4 1017.8 1022.4 1023.2 1026.4 1027.6 1026.7 1049.9 DAY 22 13 10 16 14 11 30 30 29 26 13 19 MIN. QNH PRESSURE IN HPA 1006.7 1005.3 1003.7 1006.4 1007.1 1008.7 1007.8 1009.5 1011.7 1014.0 1009.3 1010.5 1003.7 DAY 31 29 18 30 1 28 20 4 12 17 8 11 MEAN QFF PRESSURE IN HPA 1020.1 1016.5 1012.3 1009.2 1007.8 1005.9 1001.5 1006.7 1010.1 1017.5 1020.4 1023.8 1012.6 MAX. QFF PRESSURE IN HPA 1029.8 1026.4 1019.3 1024.2 1043.2 1012.7 1009.3 1014.4 1021.5 1025.2 1029.5 1031.6 1043.2 DAY 22 27 2 2 14 12 30 30 30 26 13 19 MIN. QFF PRESSURE IN HPA 1008.6 1004.8 1001.7 999.8 999.3 997.5 995.4 999.1 1003.5 1009.9 1008.0 1009.2 995.4 DAY 31 24 30 30 26 28 20 4 12 17 8 11 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1956 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 865.4 863.9 861.5 862.5 862.1 863.2 861.1 864.6 865.6 868.7 868.6 869.0 864.7 MAX. QFE PRESSURE IN HPA 871.9 869.0 866.6 869.8 868.5 868.3 865.8 870.6 871.3 873.7 874.8 874.6 874.8 DAY 22 13 10 16 23 11 30 30 29 26 13 19 MIN. QFE PRESSURE IN HPA 856.8 855.0 854.9 856.4 857.4 858.2 857.4 859.0 860.4 863.2 859.3 860.7 854.9 DAY 31 29 18 30 1 28 19 4 12 17 8 11 MEAN QNH PRESSURE IN HPA 1017.2 1015.5 1012.7 1013.9 1013.3 1014.6 1012.2 1016.2 1017.4 1020.9 1020.8 1021.3 1016.3 MAX. QNH PRESSURE IN HPA 1024.6 1021.3 1018.5 1022.2 1020.7 1020.5 1017.6 1023.1 1023.9 1026.6 1027.9 1027.6 1027.9 DAY 22 13 10 16 23 11 30 30 29 26 13 19 MIN. QNH PRESSURE IN HPA 1007.3 1005.3 1005.2 1006.9 1008.0 1008.9 1008.0 1009.9 1011.4 1014.6 1010.2 1011.8 1005.2 DAY 31 29 18 30 1 28 19 4 12 17 8 11 MEAN QFF PRESSURE IN HPA 1021.1 1017.2 1013.0 1009.3 1006.2 1005.1 1000.6 1006.0 1009.8 1016.9 1020.4 1024.3 1012.5 MAX. QFF PRESSURE IN HPA 1030.7 1026.3 1020.1 1024.4 1014.9 1012.2 1007.2 1013.6 1020.5 1024.1 1029.0 1032.6 1032.6 DAY 22 27 14 2 23 11 30 30 30 26 13 19 MIN. QFF PRESSURE IN HPA 1009.2 1004.6 1003.0 1000.8 1000.2 997.1 995.0 998.3 1003.0 1009.1 1008.3 1010.4 995.0 DAY 31 24 30 30 28 28 19 4 12 17 8 11 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 864.1 863.0 860.7 861.6 861.5 862.1 860.1 863.4 864.2 867.2 867.3 867.7 863.6 MAX. QFE PRESSURE IN HPA 870.8 868.3 865.7 869.4 866.4 867.5 864.5 869.0 870.0 872.6 872.9 873.3 873.3 DAY 22 13 6 15 23 11 29 30 29 25 13 19 MIN. QFE PRESSURE IN HPA 854.8 853.3 854.5 855.0 856.3 856.8 856.3 858.2 858.5 861.4 858.0 859.3 853.3 DAY 31 29 29 30 1 26 19 4 12 17 8 11 MEAN QNH PRESSURE IN HPA 1015.7 1014.4 1011.7 1012.8 1012.7 1013.4 1011.1 1014.9 1015.7 1019.2 1019.3 1019.8 1015.0 MAX. QNH PRESSURE IN HPA 1023.3 1020.5 1017.5 1021.7 1018.3 1019.5 1016.1 1021.3 1022.4 1025.4 1025.7 1026.2 1026.2 DAY 22 13 6 15 23 11 29 30 29 25 13 19 MIN. QNH PRESSURE IN HPA 1005.1 1003.4 1004.7 1005.3 1006.8 1007.3 1006.8 1008.9 1009.3 1012.6 1008.7 1010.2 1003.4 DAY 31 29 29 30 1 26 19 4 12 17 8 11 MEAN QFF PRESSURE IN HPA 1018.8 1015.4 1011.4 1007.7 1004.9 1003.4 998.9 1004.2 1007.4 1013.4 1017.2 1021.5 1010.3 MAX. QFF PRESSURE IN HPA 1028.5 1024.4 1018.3 1022.3 1011.5 1011.2 1005.6 1011.4 1016.9 1021.2 1024.9 1029.1 1029.1 DAY 21 13 14 2 23 11 29 30 30 25 14 17 MIN. QFF PRESSURE IN HPA 1006.0 1002.1 1001.1 999.1 999.1 995.2 992.8 997.4 1000.3 1005.0 1005.8 1008.7 992.8 DAY 31 24 17 26 20 28 19 4 12 17 8 11 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 863.6 861.9 859.7 860.5 859.9 861.0 858.9 862.3 ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 870.0 867.2 864.5 867.0 864.5 866.5 864.0 868.2 ****** ****** ****** ****** ****** DAY 22 13 14 15 23 11 31 30 ** ** ** ** MIN. QFE PRESSURE IN HPA 853.0 852.5 852.5 853.7 854.8 855.5 854.7 857.5 ****** ****** ****** ****** ****** DAY 31 29 17 30 28 28 10 4 ** ** ** ** MEAN QNH PRESSURE IN HPA 1015.0 1013.2 1010.6 1011.5 1010.9 1012.2 1009.7 1013.7 ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1022.4 1019.2 1016.1 1019.0 1016.1 1018.4 1015.6 1020.3 ****** ****** ****** ****** ****** DAY 22 13 14 15 23 11 31 30 ** ** ** ** MIN. QNH PRESSURE IN HPA 1003.0 1002.4 1002.4 1003.8 1005.1 1005.9 1004.9 1008.1 ****** ****** ****** ****** ****** DAY 31 29 17 30 28 28 10 4 ** ** ** ** MEAN QFF PRESSURE IN HPA 1018.1 1014.1 1010.2 1006.5 1003.5 1002.7 998.0 1003.6 ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1028.5 1022.6 1017.1 1020.6 1009.4 1010.2 1005.9 1010.8 ****** ****** ****** ****** ****** DAY 20 13 1 2 23 11 31 30 ** ** ** ** MIN. QFF PRESSURE IN HPA 1003.4 1001.8 998.3 997.3 996.3 993.5 991.5 996.5 ****** ****** ****** ****** ****** DAY 31 24 17 27 28 28 10 4 ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1956 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 864.2 862.7 860.1 860.7 860.2 861.2 858.9 862.8 863.7 867.2 867.8 867.8 863.1 MAX. QFE PRESSURE IN HPA 870.2 868.0 864.5 868.0 864.6 867.5 864.2 868.8 870.4 872.8 874.5 873.3 874.5 DAY 21 13 6 15 30 11 29 29 29 25 12 18 MIN. QFE PRESSURE IN HPA 853.2 854.0 852.0 854.3 854.5 855.7 854.6 857.2 858.8 861.0 861.8 860.3 852.0 DAY 31 29 17 30 28 28 19 4 12 17 7 10 MEAN QNH PRESSURE IN HPA 1015.8 1014.1 1011.2 1011.8 1011.2 1012.4 1009.7 1014.2 1015.2 1019.2 1019.9 1019.9 1014.5 MAX. QNH PRESSURE IN HPA 1022.6 1020.1 1016.1 1020.1 1016.2 1019.5 1015.8 1021.0 1022.8 1025.6 1027.5 1026.2 1027.5 DAY 21 13 6 15 30 11 29 29 29 25 12 18 MIN. QNH PRESSURE IN HPA 1003.2 1004.2 1001.9 1004.5 1004.7 1006.1 1004.8 1007.8 1009.6 1012.1 1013.0 1011.3 1001.9 DAY 31 29 17 30 28 28 19 4 12 17 7 10 MEAN QFF PRESSURE IN HPA 1019.8 1016.0 1011.5 1007.7 1004.6 1003.8 998.9 1004.9 1008.5 1016.3 1020.4 1023.4 1011.3 MAX. QFF PRESSURE IN HPA 1029.8 1025.0 1018.6 1020.7 1010.1 1012.5 1007.7 1012.5 1020.6 1024.1 1028.8 1030.9 1030.9 DAY 21 26 19 2 30 11 31 29 29 25 12 19 MIN. QFF PRESSURE IN HPA 1004.4 1005.0 998.2 999.1 996.3 994.7 992.3 997.1 1002.0 1007.6 1011.8 1011.3 992.3 DAY 31 8 17 27 28 28 19 4 12 17 9 10 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 864.5 863.2 860.7 861.9 861.3 862.2 860.2 863.8 864.6 867.5 867.8 868.1 863.8 MAX. QFE PRESSURE IN HPA 871.0 868.5 865.2 869.1 866.3 867.7 865.7 869.4 871.0 873.3 875.6 873.7 875.6 DAY 21 26 19 15 22 11 31 30 29 25 12 18 MIN. QFE PRESSURE IN HPA 853.8 855.8 851.4 855.4 855.0 856.8 855.4 858.3 859.7 860.3 859.2 860.5 851.4 DAY 31 29 29 5 28 27 19 4 12 23 8 10 MEAN QNH PRESSURE IN HPA 1016.1 1014.6 1011.8 1013.1 1012.5 1013.5 1011.2 1015.4 1016.2 1019.5 1019.9 1020.2 1015.3 MAX. QNH PRESSURE IN HPA 1023.5 1020.7 1016.9 1021.4 1018.2 1019.8 1017.5 1021.7 1023.5 1026.2 1028.8 1026.6 1028.8 DAY 21 26 19 15 22 11 31 30 29 25 12 18 MIN. QNH PRESSURE IN HPA 1003.9 1006.2 1001.2 1005.7 1005.3 1007.3 1005.7 1009.1 1010.7 1011.3 1010.1 1011.6 1001.2 DAY 31 29 29 5 28 27 19 4 12 23 8 10 MEAN QFF PRESSURE IN HPA 1020.0 1016.4 1012.0 1008.6 1005.3 1004.0 999.7 1005.2 1008.8 1015.5 1019.4 1023.4 1011.5 MAX. QFF PRESSURE IN HPA 1031.2 1025.9 1019.8 1022.0 1012.1 1012.3 1007.7 1012.3 1019.7 1024.0 1029.1 1030.6 1031.2 DAY 21 26 19 1 22 11 31 30 29 25 13 19 MIN. QFF PRESSURE IN HPA 1004.7 1007.5 998.2 1000.3 996.5 995.8 992.3 998.0 1002.3 1008.3 1008.8 1010.9 992.3 DAY 31 8 17 26 28 28 19 4 12 17 8 10 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 864.3 863.0 860.6 861.7 861.4 862.1 860.3 863.7 864.5 867.5 867.6 867.7 863.7 MAX. QFE PRESSURE IN HPA 870.8 868.8 865.5 869.0 866.8 867.4 866.4 869.0 871.2 870.7 875.2 873.9 875.2 DAY 21 26 19 15 22 11 1 29 29 26 12 18 MIN. QFE PRESSURE IN HPA 856.3 856.8 851.0 855.9 855.8 857.5 855.5 858.0 859.4 863.2 859.7 859.8 851.0 DAY 30 7 29 30 28 25 19 4 12 17 8 10 MEAN QNH PRESSURE IN HPA 1015.9 1014.5 1011.7 1012.9 1012.5 1013.4 1011.4 1015.2 1016.2 1019.5 1019.7 1019.8 1015.2 MAX. QNH PRESSURE IN HPA 1023.3 1021.0 1017.3 1021.3 1018.7 1019.4 1018.3 1021.3 1023.8 1023.2 1028.3 1026.8 1028.3 DAY 21 26 19 15 22 11 1 29 29 26 12 18 MIN. QNH PRESSURE IN HPA 1006.8 1007.3 1000.7 1006.3 1006.2 1008.1 1005.9 1008.7 1010.3 1014.6 1010.7 1010.8 1000.7 DAY 30 7 29 30 28 25 19 4 12 17 8 10 MEAN QFF PRESSURE IN HPA 1019.1 1015.5 1011.3 1007.8 1004.8 1003.6 999.4 1004.7 1008.0 1013.9 1017.6 1021.6 1010.6 MAX. QFF PRESSURE IN HPA 1030.2 1025.7 1019.4 1021.9 1012.1 1011.5 1008.1 1011.9 1019.3 1019.9 1026.7 1030.1 1030.2 DAY 21 26 19 1 22 11 31 30 29 24 12 18 MIN. QFF PRESSURE IN HPA 1007.0 1006.0 997.7 999.6 997.0 995.5 991.5 996.2 1001.7 1006.8 1007.1 1008.3 991.5 DAY 31 23 29 26 25 28 19 4 12 17 7 10 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1957 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) ***** 3.4 8.7 12.8 18.3 21.3 23.5 23.5 20.2 13.3 5.5 2.2 ***** MINIMUN AIR TEMPERATURE (C) -3.9 -0.6 3.2 7.0 12.5 15.6 17.4 16.9 13.1 8.4 1.9 -1.3 7.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 2 3 0 0 0 0 5 DAYS WITH MINIMUM TEMP. <=-4 18 3 1 0 0 0 0 0 0 0 3 9 34 DAYS WITH FREEZING MIN.<= 0 31 22 2 2 0 0 0 0 0 0 9 23 89 TEMPERATURE RECORDS LOWEST(C) -6.0 -6.0 -5.0 -1.0 7.0 10.0 11.0 12.0 10.0 3.0 -6.0 -8.0 -8.0 DAY 10 7 30 6 2 8 6 16 12 14 23 30 MAXIMUM AIR TEMPERATURE (C) 4.8 11.1 16.6 20.4 26.6 29.9 32.9 33.0 30.8 21.9 11.8 8.8 20.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 6 21 28 29 28 2 0 0 114 DAYS WITH MAXIMUM TEMP. <= 0 2 0 0 0 0 0 0 0 0 0 0 1 3 TEMPERATURE RECORDS HIGHEST(C) 9.0 20.0 24.0 28.0 33.0 35.0 37.0 39.0 33.0 31.0 19.0 14.0 39.0 DAY 25 25 24 19 29 17 3 6 5 1 2 17 DIF. BETWEEN (MAX.-MIN.) (C) 8.7 11.7 13.4 13.4 14.1 14.3 15.5 16.1 17.7 13.5 9.9 10.1 13.2 MEAN DAILY TEMP. (MDT) (C) 0.5 5.2 9.9 13.7 19.5 22.7 25.2 25.0 21.9 15.2 6.9 3.7 14.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 11.0 73.5 129.5 123.5 28.5 6.0 0.0 0.0 372.0 HEATING DEG. DAYS(BASE 18 0C) 543.0 357.0 250.5 131.5 19.5 6.5 0.0 0.0 0.0 118.0 334.0 442.0 2202.0 DEWPOINT (MEAN C) ***** -2.5 0.8 3.1 8.6 10.4 11.8 11.1 9.1 6.0 1.5 -2.6 ***** MIXING RATIO (G/KG) ****** 3.80 4.81 5.69 8.28 9.33 10.28 9.89 8.54 6.89 5.17 3.78 ****** VAPOUR PRESSURE (HPA) ****** 5.25 6.63 7.84 11.35 12.76 14.01 13.51 11.73 9.51 7.15 5.23 ****** SATURATION DEF. (HPA) ****** 2.95 5.24 7.86 10.56 13.82 16.29 17.02 13.35 6.98 2.37 2.25 ****** RELATIVE HUMIDITY (MEAN %) *** 70 61 54 56 52 50 48 52 64 77 72 *** RELATIVE HUMIDITY (MAX. %) 95 88 79 71 72 67 64 65 72 80 89 85 77 RELATIVE HUMIDITY (MIN. %) 53 42 39 39 39 37 33 31 32 43 58 53 42 RELATIVE HUMIDITY (MEAN% 03UTC) 93 85 73 64 67 64 61 62 68 77 86 82 74 RELATIVE HUMIDITY (MEAN% 09UTC) 53 43 43 40 40 38 35 33 34 46 59 58 44 RELATIVE HUMIDITY (MEAN% 15UTC) 84 67 58 53 56 49 47 43 48 66 79 72 60 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 17.0 28.2 55.0 38.5 43.3 22.5 9.1 1.1 9.0 22.5 21.1 9.9 277.2 DAYS WITH PRECIPITATION >=10 1 1 2 2 1 1 0 0 0 1 0 0 9 DAYS WITH PRECIPITATION >= 5 1 1 2 3 3 1 1 0 1 1 2 1 17 DAYS WITH PRECIPITATION >= 1 4 4 6 4 8 5 1 1 2 4 5 3 47 DAYS WITH PRECIPITATION 17 9 11 8 15 8 5 4 4 10 12 5 108 GREATEST DAILY PRECIPITATION 10.0 20.0 23.0 18.2 18.0 14.0 9.0 1.1 8.0 16.0 7.0 5.0 23.0 DAY 6 12 26 1 3 2 13 30 14 11 29 1 DAY WITH THUNDER STORM 0 0 2 1 2 1 0 3 3 1 0 0 13 DAYS WITH SNOW OR SLEET 14 5 2 1 0 0 0 0 0 0 0 2 24 DAYS WITH DUST 0 0 2 2 0 0 1 0 0 1 0 0 6 WIND DIRECTION (PREVAILING) 360 225 225 360 360 360 360 360 360 360 225 225 360 PREVAILING WIND SPEED(KNOTS) 5.2 5.2 6.6 6.5 6.7 6.1 6.4 7.6 5.7 6.1 6.3 5.8 6.2 PREVAILING WIND PERCENT 22.8 34.9 28.4 36.7 48.8 50.7 60.1 54.8 37.1 29.4 37.1 34.7 36.5 CALMS PERCENT OF WIND 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 0.0 0.0 0.0 0.0 0.0 NO. OF WIND OBSERVATION 189 172 204 210 217 229 248 248 240 248 240 248 2693 VECTOR WIND DIRECTION (MEAN) 48 280 279 26 342 13 12 17 8 296 235 262 349 VECTOR WIND MAGNITUDE(KNOTS) 0.6 1.1 0.9 1.3 1.8 3.3 4.2 4.4 1.6 1.2 1.8 2.1 1.4 WIND STEADINESES (MEAN %) 12.2 22.4 15.3 18.8 23.4 52.4 65.6 64.7 31.4 19.7 31.6 38.2 23.3 WIND SPEED (MEAN KNOTS) 4.9 4.9 5.9 6.9 7.7 6.3 6.4 6.8 5.1 6.1 5.7 5.5 6.0 FASTEST WIND DIRECTION 60 230 230 90 310 360 50 360 360 180 230 310 230 FASTEST WIND SPEED (KNOTS) 13 13 18 18 18 18 18 17 15 13 13 15 18 DAY 16 5 21 24 4 5 23 21 14 13 3 10 DAYS WITH SKY CLEAR (0-2)/8 5 10 7 5 2 14 24 25 23 16 7 14 152 DAYS WITH P.CLOUDY (3-6)/8 9 8 11 11 15 14 7 6 4 9 14 11 119 DAYS WITH CLOUDY (7-8)/8 17 10 13 14 14 2 0 0 3 6 9 6 94 DAYS WITH VISIBILITY =< 2 KM 2 4 2 0 0 0 0 0 0 0 0 2 10 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1957 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 863.5 865.4 863.4 865.6 863.8 864.1 861.9 863.9 866.9 868.8 868.4 867.3 865.2 MAX. QFE PRESSURE IN HPA 871.8 872.2 873.1 872.2 870.8 868.7 869.7 868.9 870.5 875.6 875.5 875.3 875.6 DAY-HOUR 4- 6 19- 6 22- 6 17- 6 11-18 20- 6 5- 6 31-21 10- 6 19- 6 24- 6 23- 6 MIN. QFE PRESSURE IN HPA 850.0 854.7 851.2 857.6 859.0 859.5 854.2 854.8 861.9 860.8 859.5 857.4 850.0 DAY-HOUR 19-18 5- 9 14-21 1- 3 25-12 29-12 12-12 8-12 28-12 9-12 18- 9 7- 9 MEAN QNH PRESSURE IN HPA 1015.0 1017.2 1014.9 1017.4 1015.3 1015.7 1013.1 1015.4 1018.8 1021.0 1020.5 1019.3 1017.0 MAX. QNH PRESSURE IN HPA 1024.4 1024.9 1025.9 1024.9 1023.3 1020.9 1022.1 1021.1 1023.0 1028.8 1028.7 1028.4 1028.8 DAY-HOUR 4- 6 19- 6 22- 6 17- 6 11-18 20- 6 5- 6 31-21 10- 6 19- 6 24- 6 23- 6 MIN. QNH PRESSURE IN HPA 999.6 1004.9 1001.0 1008.3 1009.9 1010.4 1004.4 1005.1 1013.2 1011.9 1010.4 1008.0 999.6 DAY-HOUR 19-18 5- 9 14-21 1- 3 25-12 29-12 12-12 8-12 28-12 9-12 18- 9 7- 9 MEAN QFF PRESSURE IN HPA ****** 1018.8 1013.5 1014.1 1008.6 1007.0 1002.9 1005.3 1010.6 1016.7 1020.8 1021.6 ****** MAX. QFF PRESSURE IN HPA ****** 1028.2 1029.2 1022.4 1017.0 1012.9 1014.3 1013.9 1016.0 1027.9 1033.4 1033.6 ****** DAY-HOUR **-** 9- 6 30- 6 6- 3 12- 3 8-18 6- 3 17- 3 16-15 19- 3 24- 6 23- 6 MIN. QFF PRESSURE IN HPA ****** 1003.9 998.5 1006.3 1001.3 999.5 993.2 991.6 1003.7 1003.8 1009.3 1008.2 ****** DAY-HOUR **-** 27- 9 7- 9 28-21 25- 9 29-12 16-12 8-12 28-12 9-12 18- 9 7-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 864.6 861.9 863.9 866.6 868.5 868.3 867.1 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 867.5 867.8 867.0 869.5 874.3 873.8 873.7 ****** DAY ** ** ** ** ** 20 5 17 10 13 24 23 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 860.5 856.4 857.9 862.7 860.9 863.0 858.4 ****** DAY ** ** ** ** ** 29 13 8 29 9 18 7 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1016.2 1013.1 1015.5 1018.6 1020.7 1020.4 1019.0 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1019.5 1019.9 1019.0 1021.8 1027.3 1026.7 1026.6 ****** DAY ** ** ** ** ** 20 5 17 10 13 24 23 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1011.6 1006.9 1008.6 1014.1 1012.0 1014.4 1009.2 ****** DAY ** ** ** ** ** 29 13 8 29 9 18 7 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1006.4 1002.7 1005.0 1010.2 1015.9 1020.5 1021.0 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1010.0 1012.1 1011.1 1013.1 1026.4 1030.1 1031.5 ****** DAY ** ** ** ** ** 12 6 17 17 13 24 30 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1000.3 995.2 995.1 1005.5 1004.1 1012.4 1009.1 ****** DAY ** ** ** ** ** 29 16 8 28 9 18 7 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 863.7 865.2 863.5 865.8 864.0 864.7 862.5 864.5 867.3 868.9 868.6 867.3 865.5 MAX. QFE PRESSURE IN HPA 871.0 871.4 872.2 871.9 870.3 868.6 868.8 868.2 870.1 875.5 874.1 874.2 875.5 DAY 4 19 22 17 12 20 5 17 10 19 24 23 MIN. QFE PRESSURE IN HPA 854.2 855.3 851.4 857.6 860.7 860.5 856.8 858.1 863.7 860.9 862.2 858.9 851.4 DAY 20 5 8 1 25 7 13 8 29 9 18 7 MEAN QNH PRESSURE IN HPA 1015.3 1017.0 1015.0 1017.7 1015.6 1016.3 1013.8 1016.2 1019.3 1021.2 1020.8 1019.4 1017.3 MAX. QNH PRESSURE IN HPA 1023.5 1024.0 1024.9 1024.6 1022.7 1020.8 1021.0 1020.3 1022.5 1028.7 1027.1 1027.2 1028.7 DAY 4 19 22 17 12 20 5 17 10 19 24 23 MIN. QNH PRESSURE IN HPA 1004.4 1005.6 1001.2 1008.3 1011.8 1011.6 1007.3 1008.8 1015.2 1012.0 1013.5 1009.7 1001.2 DAY 20 5 8 1 25 7 13 8 29 9 18 7 MEAN QFF PRESSURE IN HPA ****** 1019.3 1014.4 1015.0 1009.6 1008.5 1004.8 1007.3 1012.6 1017.9 1022.1 1022.4 ****** MAX. QFF PRESSURE IN HPA ****** 1027.3 1029.2 1022.4 1017.0 1012.7 1014.3 1013.9 1015.4 1027.9 1032.2 1033.2 ****** DAY ** 13 30 6 12 9 6 17 22 19 24 23 MIN. QFF PRESSURE IN HPA ****** 1004.0 999.5 1008.5 1003.6 1002.7 997.5 997.3 1009.0 1005.7 1012.4 1010.3 ****** DAY ** 27 8 29 8 29 3 8 28 9 18 7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1957 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 864.8 866.0 864.5 866.5 864.4 864.9 862.7 864.8 867.8 869.8 869.3 868.2 866.1 MAX. QFE PRESSURE IN HPA 871.8 872.2 873.1 872.2 870.2 868.7 869.7 867.9 870.5 875.6 875.5 875.3 875.6 DAY 4 19 22 17 12 20 5 17 10 19 24 23 MIN. QFE PRESSURE IN HPA 854.7 855.7 854.2 860.7 860.9 860.5 857.0 857.6 864.4 862.4 861.2 859.1 854.2 DAY 19 5 7 1 25 7 12 8 28 9 18 7 MEAN QNH PRESSURE IN HPA 1016.5 1017.8 1016.1 1018.4 1016.0 1016.6 1014.1 1016.5 1019.8 1022.2 1021.6 1020.4 1018.0 MAX. QNH PRESSURE IN HPA 1024.4 1024.9 1025.9 1024.9 1022.6 1020.9 1022.1 1020.0 1023.0 1028.8 1028.7 1028.4 1028.8 DAY 4 19 22 17 12 20 5 17 10 19 24 23 MIN. QNH PRESSURE IN HPA 1004.9 1006.1 1004.4 1011.8 1012.0 1011.6 1007.6 1008.3 1016.0 1013.7 1012.4 1010.0 1004.4 DAY 19 5 7 1 25 7 12 8 28 9 18 7 MEAN QFF PRESSURE IN HPA ****** 1019.9 1014.8 1015.0 1009.3 1008.1 1004.1 1006.5 1011.4 1018.1 1022.1 1023.0 ****** MAX. QFF PRESSURE IN HPA ****** 1028.2 1029.2 1021.6 1016.1 1012.1 1014.0 1012.4 1014.3 1026.9 1033.4 1033.6 ****** DAY ** 9 30 6 12 9 5 17 10 19 24 23 MIN. QFF PRESSURE IN HPA ****** 1005.0 1000.4 1009.2 1003.8 1001.1 996.2 996.0 1007.9 1006.4 1011.1 1010.6 ****** DAY ** 27 7 28 8 29 3 8 28 9 18 7 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 863.4 865.2 863.6 865.6 863.7 864.1 861.9 863.8 866.9 868.8 868.4 867.0 865.2 MAX. QFE PRESSURE IN HPA 870.2 871.6 871.9 871.1 869.9 867.7 868.8 867.2 869.5 874.6 874.0 874.0 874.6 DAY 4 19 22 17 11 20 5 31 10 19 24 23 MIN. QFE PRESSURE IN HPA 852.7 854.7 852.7 860.5 859.7 859.7 856.0 856.4 863.1 861.6 859.5 857.4 852.7 DAY 19 5 7 1 25 7 12 8 28 9 18 7 MEAN QNH PRESSURE IN HPA 1014.9 1016.9 1015.1 1017.4 1015.2 1015.7 1013.2 1015.3 1018.9 1021.0 1020.6 1019.0 1016.9 MAX. QNH PRESSURE IN HPA 1022.6 1024.2 1024.6 1023.6 1022.3 1019.8 1021.0 1019.2 1021.8 1027.6 1027.0 1027.0 1027.6 DAY 4 19 22 17 11 20 5 31 10 19 24 23 MIN. QNH PRESSURE IN HPA 1002.7 1004.9 1002.7 1011.6 1010.7 1010.7 1006.4 1006.9 1014.5 1012.8 1010.4 1008.0 1002.7 DAY 19 5 7 1 25 7 12 8 28 9 18 7 MEAN QFF PRESSURE IN HPA ****** 1017.7 1013.0 1013.2 1007.6 1006.2 1002.1 1004.3 1009.8 1015.7 1020.1 1020.4 ****** MAX. QFF PRESSURE IN HPA ****** 1026.7 1027.6 1018.7 1015.1 1011.1 1012.6 1009.5 1012.3 1024.5 1030.2 1030.8 ****** DAY ** 13 30 2 11 9 5 17 10 19 23 23 MIN. QFF PRESSURE IN HPA ****** 1003.9 998.5 1007.8 1001.3 999.7 994.5 992.7 1004.7 1003.9 1009.3 1008.3 ****** DAY ** 27 7 28 25 29 3 8 28 9 18 7 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 863.0 864.7 863.1 863.2 860.9 862.8 866.0 868.0 867.6 866.5 ****** MAX. QFE PRESSURE IN HPA ****** ****** 870.1 870.5 869.2 866.4 867.4 866.1 868.3 873.7 872.9 873.2 ****** DAY ** ** 22 16 11 20 5 31 9 12 23 23 MIN. QFE PRESSURE IN HPA ****** ****** 853.7 860.6 859.0 859.5 854.2 854.8 861.9 860.8 859.9 857.5 ****** DAY ** ** 17 3 25 29 12 8 28 9 18 7 MEAN QNH PRESSURE IN HPA ****** ****** 1014.4 1016.3 1014.5 1014.6 1012.0 1014.2 1017.9 1020.1 1019.6 1018.4 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1022.5 1023.0 1021.5 1018.3 1019.4 1017.9 1020.5 1026.6 1025.7 1026.0 ****** DAY ** ** 22 16 11 20 5 31 9 12 23 23 MIN. QNH PRESSURE IN HPA ****** ****** 1003.8 1011.7 1009.9 1010.4 1004.4 1005.1 1013.2 1011.9 1010.9 1008.1 ****** DAY ** ** 17 3 25 29 12 8 28 9 18 7 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1004.8 1001.3 1003.6 1009.3 1015.3 1019.7 1020.3 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1008.1 1011.1 1008.9 1012.1 1024.7 1030.5 1030.5 ****** DAY ** ** ** ** ** 20 5 16 16 12 23 23 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 999.5 993.2 991.6 1003.7 1003.8 1010.4 1008.2 ****** DAY ** ** ** ** ** 29 16 8 28 9 18 7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1957 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 863.7 864.9 862.6 865.1 863.3 863.3 861.0 863.1 866.3 868.3 868.1 867.1 864.7 MAX. QFE PRESSURE IN HPA 870.3 870.8 870.2 870.7 870.0 866.3 867.0 866.5 870.2 874.8 873.8 873.4 874.8 DAY 4 19 22 16 11 17 5 11 16 12 23 22 MIN. QFE PRESSURE IN HPA 850.7 856.2 852.6 861.2 859.2 859.7 855.2 855.7 862.0 860.8 861.5 859.1 850.7 DAY 19 27 7 3 7 28 16 8 28 10 18 7 MEAN QNH PRESSURE IN HPA 1015.2 1016.6 1014.0 1016.8 1014.8 1014.8 1012.1 1014.5 1018.1 1020.5 1020.2 1019.1 1016.4 MAX. QNH PRESSURE IN HPA 1022.7 1023.3 1022.6 1023.2 1022.4 1018.2 1019.0 1018.4 1022.6 1027.9 1026.7 1026.3 1027.9 DAY 4 19 22 16 11 17 5 11 16 12 23 22 MIN. QNH PRESSURE IN HPA 1000.4 1006.7 1002.6 1012.4 1010.1 1010.7 1005.5 1006.1 1013.3 1011.9 1012.7 1010.0 1000.4 DAY 19 27 7 3 7 28 16 8 28 10 18 7 MEAN QFF PRESSURE IN HPA 1018.4 1018.9 1013.3 1013.9 1008.6 1006.8 1002.8 1005.6 1011.3 1017.3 1021.4 1022.1 1013.4 MAX. QFF PRESSURE IN HPA 1025.7 1026.0 1026.3 1020.3 1016.2 1012.1 1012.7 1010.7 1016.0 1026.8 1032.8 1032.1 1032.8 DAY 26 19 30 5 11 8 5 31 16 12 23 22 MIN. QFF PRESSURE IN HPA 1004.0 1004.6 998.9 1007.8 1002.0 1001.2 994.3 994.8 1006.2 1006.1 1012.6 1010.8 994.3 DAY 19 27 7 28 7 28 16 8 28 10 18 7 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 863.8 865.6 863.4 866.1 864.2 864.3 862.1 864.0 867.1 869.0 868.5 867.6 865.5 MAX. QFE PRESSURE IN HPA 870.4 871.2 870.8 872.0 870.8 867.6 868.2 867.2 870.2 875.1 874.2 874.2 875.1 DAY 4 19 22 16 11 17 5 30 9 12 23 22 MIN. QFE PRESSURE IN HPA 850.0 856.8 853.2 861.8 860.5 860.4 856.8 857.4 862.6 862.1 863.2 860.5 850.0 DAY 19 27 14 29 7 5 15 8 28 8 18 7 MEAN QNH PRESSURE IN HPA 1015.4 1017.4 1014.8 1018.0 1015.7 1016.0 1013.4 1015.6 1019.1 1021.3 1020.7 1019.7 1017.3 MAX. QNH PRESSURE IN HPA 1022.8 1023.8 1023.3 1024.7 1023.3 1019.7 1020.3 1019.2 1022.6 1028.2 1027.2 1027.2 1028.2 DAY 4 19 22 16 11 17 5 30 9 12 23 22 MIN. QNH PRESSURE IN HPA 999.6 1007.3 1003.2 1013.0 1011.6 1011.4 1007.3 1008.0 1014.0 1013.4 1014.6 1011.6 999.6 DAY 19 27 14 29 7 5 15 8 28 8 18 7 MEAN QFF PRESSURE IN HPA 1018.3 1019.3 1013.4 1014.5 1008.9 1007.5 1003.5 1005.7 1010.7 1017.3 1021.2 1022.4 1013.6 MAX. QFF PRESSURE IN HPA 1025.7 1027.1 1026.0 1021.0 1016.2 1012.9 1013.3 1011.0 1014.7 1026.9 1032.3 1032.5 1032.5 DAY 26 8 29 5 11 8 5 16 16 12 23 22 MIN. QFF PRESSURE IN HPA 1002.4 1005.8 1000.9 1008.1 1003.2 1002.0 995.3 996.2 1006.2 1007.1 1014.7 1012.9 995.3 DAY 19 27 7 29 7 29 15 8 28 8 18 6 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 863.4 865.4 863.1 865.8 863.9 864.2 862.1 864.0 866.9 868.8 868.3 867.4 865.3 MAX. QFE PRESSURE IN HPA 870.3 871.3 870.6 871.7 870.5 867.2 867.7 868.9 869.8 874.5 873.8 873.8 874.5 DAY 3 18 21 16 11 19 5 31 9 12 23 22 MIN. QFE PRESSURE IN HPA 850.8 857.2 851.2 861.4 860.8 860.5 856.3 858.2 862.6 861.4 864.2 860.2 850.8 DAY 19 26 14 28 24 5 15 8 28 8 17 6 MEAN QNH PRESSURE IN HPA 1014.9 1017.2 1014.5 1017.6 1015.5 1015.8 1013.4 1015.6 1018.9 1021.0 1020.4 1019.5 1017.0 MAX. QNH PRESSURE IN HPA 1022.7 1023.9 1023.1 1024.3 1023.0 1019.2 1019.8 1021.1 1022.2 1027.5 1026.7 1026.7 1027.5 DAY 3 18 21 16 11 19 5 31 9 12 23 22 MIN. QNH PRESSURE IN HPA 1000.5 1007.8 1001.0 1012.6 1011.9 1011.6 1006.8 1008.9 1014.0 1012.6 1015.8 1011.2 1000.5 DAY 19 26 14 28 24 5 15 8 28 8 17 6 MEAN QFF PRESSURE IN HPA 1016.9 1017.9 1012.4 1013.3 1007.8 1006.4 1002.5 1004.7 1009.9 1016.0 1019.9 1021.1 1012.4 MAX. QFF PRESSURE IN HPA 1023.7 1025.3 1027.4 1019.4 1016.0 1011.1 1012.3 1011.9 1013.2 1026.5 1030.7 1031.8 1031.8 DAY 26 12 29 22 11 8 5 31 16 12 23 29 MIN. QFF PRESSURE IN HPA 1003.1 1004.0 999.4 1006.3 1003.0 1000.4 993.8 995.1 1005.5 1004.7 1013.2 1011.7 993.8 DAY 19 26 14 28 24 29 15 7 28 8 17 6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1958 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.9 4.4 11.0 15.7 19.3 22.9 25.5 24.5 20.9 14.7 4.2 3.1 14.1 MINIMUN AIR TEMPERATURE (C) -0.7 -1.4 5.5 9.1 12.9 16.6 19.3 18.5 14.7 9.4 -0.4 0.1 8.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 2 10 5 0 0 0 0 17 DAYS WITH MINIMUM TEMP. <=-4 4 7 0 0 0 0 0 0 0 0 4 0 15 DAYS WITH FREEZING MIN.<= 0 24 20 1 0 0 0 0 0 0 0 19 18 82 TEMPERATURE RECORDS LOWEST(C) -6.0 -7.0 0.0 2.0 6.0 13.0 15.0 12.0 10.0 6.0 -7.0 -3.0 -7.0 DAY 1 2 2 7 6 6 15 6 27 31 23 13 MAXIMUM AIR TEMPERATURE (C) 9.9 13.4 19.0 24.7 28.6 32.0 33.7 31.8 28.5 22.5 11.4 8.9 22.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 5 14 23 29 29 11 0 0 0 111 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 15.0 20.0 23.0 32.0 34.0 37.0 39.0 35.0 36.0 27.0 21.0 14.0 39.0 DAY 13 22 18 28 16 19 2 12 2 7 6 9 DIF. BETWEEN (MAX.-MIN.) (C) 10.6 14.8 13.5 15.6 15.7 15.4 14.4 13.3 13.8 13.1 11.8 8.8 13.4 MEAN DAILY TEMP. (MDT) (C) 4.6 6.0 12.2 16.9 20.8 24.3 26.5 25.1 21.6 16.0 5.5 4.5 15.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 7.0 30.0 103.0 170.0 129.0 47.0 0.0 0.0 0.0 486.0 HEATING DEG. DAYS(BASE 18 0C) 416.0 336.0 179.5 60.5 11.5 0.0 0.0 0.0 1.5 69.0 374.0 418.5 1866.5 DEWPOINT (MEAN C) -1.9 -5.5 1.5 2.8 5.3 11.2 11.6 8.7 7.2 4.3 -5.2 -1.3 3.2 MIXING RATIO (G/KG) 3.89 2.97 5.07 5.56 6.56 9.81 10.18 8.47 7.52 6.08 3.13 4.07 6.11 VAPOUR PRESSURE (HPA) 5.38 4.12 6.98 7.64 9.04 13.39 13.85 11.62 10.34 8.42 4.37 5.65 8.40 SATURATION DEF. (HPA) 2.38 4.89 6.84 11.62 14.67 16.13 20.26 20.25 15.77 9.10 4.41 2.16 10.71 RELATIVE HUMIDITY (MEAN %) 72 52 55 46 42 50 44 39 44 52 53 74 52 RELATIVE HUMIDITY (MAX. %) 87 71 74 67 61 68 62 55 63 71 73 87 70 RELATIVE HUMIDITY (MIN. %) 51 30 35 26 26 33 28 25 26 32 32 55 33 RELATIVE HUMIDITY (MEAN% 03UTC) 84 67 70 61 56 67 59 51 58 65 67 82 66 RELATIVE HUMIDITY (MEAN% 09UTC) 56 32 41 30 27 35 30 26 28 34 36 59 36 RELATIVE HUMIDITY (MEAN% 15UTC) 68 48 49 39 39 45 39 34 41 52 52 76 49 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 11.4 0.0 23.0 18.2 0.4 6.7 0.0 0.0 0.0 1.2 6.1 28.5 95.5 DAYS WITH PRECIPITATION >=10 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH PRECIPITATION >= 5 0 0 3 2 0 0 0 0 0 0 0 3 8 DAYS WITH PRECIPITATION >= 1 5 0 4 3 0 3 0 0 0 1 2 4 22 DAYS WITH PRECIPITATION 12 1 11 12 5 11 1 1 1 3 3 7 68 GREATEST DAILY PRECIPITATION 4.0 0.0 8.0 7.0 0.4 2.0 0.0 0.0 0.0 1.0 4.1 9.0 9.0 DAY 30 ** 4 19 8 5 ** ** ** 30 7 1 DAY WITH THUNDER STORM 1 0 2 1 0 4 0 0 0 0 1 0 9 DAYS WITH SNOW OR SLEET 3 0 0 0 0 0 0 0 0 0 1 4 8 DAYS WITH DUST 1 0 2 3 0 0 0 0 0 0 0 0 6 WIND DIRECTION (PREVAILING) 225 225 225 225 360 360 360 45 45 45 45 45 360 PREVAILING WIND SPEED(KNOTS) 5.8 5.8 6.6 8.0 6.1 6.0 5.2 5.6 5.5 5.3 5.5 5.5 5.5 PREVAILING WIND PERCENT 32.7 25.9 29.8 27.9 27.0 36.3 41.1 41.5 37.5 36.7 20.4 26.6 24.8 CALMS PERCENT OF WIND 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 0.4 0.0 0.0 0.0 0.1 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 278 277 255 262 6 17 29 43 43 50 34 35 12 VECTOR WIND MAGNITUDE(KNOTS) 1.9 2.0 1.8 1.6 1.6 2.8 3.3 3.5 3.2 3.0 0.5 1.1 1.3 WIND STEADINESES (MEAN %) 33.3 33.9 28.6 22.9 24.6 46.7 62.3 71.4 62.7 61.2 8.5 20.8 22.8 WIND SPEED (MEAN KNOTS) 5.7 5.9 6.3 7.0 6.5 6.0 5.3 4.9 5.1 4.9 5.9 5.3 5.7 FASTEST WIND DIRECTION 50 270 360 270 310 230 360 270 50 90 270 230 310 FASTEST WIND SPEED (KNOTS) 40 25 15 40 50 18 15 14 12 10 28 9 50 DAY 2 1 20 18 1 3 15 24 3 8 7 2 DAYS WITH SKY CLEAR (0-2)/8 11 21 6 2 11 15 24 27 27 19 20 10 193 DAYS WITH P.CLOUDY (3-6)/8 13 7 17 11 16 11 7 4 3 8 5 10 112 DAYS WITH CLOUDY (7-8)/8 7 0 8 17 4 4 0 0 0 4 5 11 60 DAYS WITH VISIBILITY =< 2 KM 1 0 0 0 0 0 0 0 0 0 0 0 1 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1958 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 865.9 866.2 863.3 863.4 866.6 862.4 861.0 864.9 866.2 869.9 872.7 868.5 865.9 MAX. QFE PRESSURE IN HPA 872.6 874.6 871.7 870.1 874.2 867.4 869.0 870.3 871.7 875.8 878.6 888.5 888.5 DAY-HOUR 13- 6 13- 6 1- 6 24- 6 13-18 3-15 15-21 25- 3 21- 6 23- 6 4- 6 7-18 MIN. QFE PRESSURE IN HPA 852.1 855.5 855.1 849.9 855.2 855.2 850.1 860.3 859.6 864.5 864.2 860.8 849.9 DAY-HOUR 30-15 1- 0 9-12 20-12 1-21 20-15 9-15 16-15 2-15 16-12 7- 0 1-12 MEAN QNH PRESSURE IN HPA 1017.7 1018.1 1014.8 1014.9 1018.5 1013.7 1012.1 1016.5 1018.1 1022.3 1025.4 1020.7 1017.7 MAX. QNH PRESSURE IN HPA 1025.4 1027.6 1024.3 1022.5 1027.2 1019.4 1021.3 1022.7 1024.3 1029.0 1032.2 1043.5 1043.5 DAY-HOUR 13- 6 13- 6 1- 6 24- 6 13-18 3-15 15-21 25- 3 21- 6 23- 6 4- 6 7-18 MIN. QNH PRESSURE IN HPA 1002.0 1005.9 1005.4 999.5 1005.5 1005.5 999.7 1011.3 1010.5 1016.1 1015.8 1011.9 999.5 DAY-HOUR 30-15 1- 0 9-12 20-12 1-21 20-15 9-15 16-15 2-15 16-12 7- 0 1-12 MEAN QFF PRESSURE IN HPA 1019.6 1019.2 1011.8 1009.3 1010.9 1003.9 1001.0 1006.1 1009.6 1017.3 1026.9 1022.5 1013.2 MAX. QFF PRESSURE IN HPA 1029.8 1029.8 1024.8 1020.5 1020.8 1012.5 1013.6 1013.7 1018.1 1027.8 1034.7 1044.8 1044.8 DAY-HOUR 2-18 13- 6 1- 6 14- 3 13- 3 4- 3 16- 3 25- 3 21- 6 31-21 23- 3 7-18 MIN. QFF PRESSURE IN HPA 1002.3 1007.3 1002.1 992.1 996.0 993.8 988.7 1000.6 1000.4 1010.7 1010.5 1012.2 988.7 DAY-HOUR 30-15 1- 0 23- 9 20-12 1-21 20-15 9-12 16-15 2-12 3-12 7- 0 9- 9 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 866.1 865.9 863.2 863.5 866.5 862.4 861.1 865.0 866.2 869.7 872.6 868.4 865.9 MAX. QFE PRESSURE IN HPA 871.5 873.2 870.0 868.7 873.4 866.4 868.7 869.9 870.0 874.4 876.6 875.4 876.6 DAY 13 14 1 25 14 4 16 25 21 23 5 6 MIN. QFE PRESSURE IN HPA 854.9 855.5 857.3 855.7 858.9 857.4 851.7 861.9 861.8 865.8 864.2 862.8 851.7 DAY 31 1 15 20 2 21 10 17 3 16 7 2 MEAN QNH PRESSURE IN HPA 1017.9 1017.7 1014.7 1015.0 1018.4 1013.7 1012.3 1016.7 1018.0 1022.0 1025.4 1020.6 1017.7 MAX. QNH PRESSURE IN HPA 1024.1 1026.0 1022.4 1020.9 1026.3 1018.3 1020.9 1022.3 1022.4 1027.4 1029.9 1028.6 1029.9 DAY 13 14 1 25 14 4 16 25 21 23 5 6 MIN. QNH PRESSURE IN HPA 1005.2 1005.9 1007.9 1006.1 1009.7 1008.0 1001.5 1013.2 1013.0 1017.6 1015.8 1014.2 1001.5 DAY 31 1 15 20 2 21 10 17 3 16 7 2 MEAN QFF PRESSURE IN HPA 1019.5 1018.5 1011.3 1009.2 1010.8 1003.7 1000.8 1006.0 1009.4 1016.7 1026.5 1022.2 1012.9 MAX. QFF PRESSURE IN HPA 1027.2 1026.9 1021.6 1017.2 1020.1 1009.9 1012.9 1012.2 1016.5 1022.3 1032.8 1028.9 1032.8 DAY 1 13 1 25 13 4 16 25 25 23 23 6 MIN. QFF PRESSURE IN HPA 1006.7 1007.3 1002.5 1000.8 999.9 996.1 990.4 1001.7 1001.1 1011.5 1010.5 1014.0 990.4 DAY 31 1 23 20 1 21 4 1 3 1 7 9 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 866.4 866.3 863.7 864.1 867.1 863.2 861.8 865.6 866.7 870.2 872.9 868.5 866.4 MAX. QFE PRESSURE IN HPA 871.5 873.6 870.9 869.4 873.4 867.2 868.7 870.3 871.1 874.6 877.5 874.4 877.5 DAY 13 13 28 24 14 4 16 25 15 23 4 6 MIN. QFE PRESSURE IN HPA 856.0 857.2 858.2 854.6 859.0 858.8 852.1 862.3 862.2 866.0 865.0 863.6 852.1 DAY 31 3 23 20 2 21 10 12 1 27 7 2 MEAN QNH PRESSURE IN HPA 1018.3 1018.1 1015.2 1015.7 1019.1 1014.6 1013.1 1017.4 1018.6 1022.7 1025.8 1020.7 1018.3 MAX. QNH PRESSURE IN HPA 1024.1 1026.5 1023.4 1021.7 1026.3 1019.2 1020.9 1022.7 1023.6 1027.6 1030.9 1027.4 1030.9 DAY 13 13 28 24 14 4 16 25 15 23 4 6 MIN. QNH PRESSURE IN HPA 1006.4 1007.8 1008.9 1004.8 1009.9 1009.6 1002.0 1013.6 1013.5 1017.8 1016.7 1015.1 1002.0 DAY 31 3 23 20 2 21 10 12 1 27 7 2 MEAN QFF PRESSURE IN HPA 1020.9 1020.5 1013.2 1011.1 1012.6 1005.8 1002.8 1007.8 1011.2 1018.7 1028.4 1023.2 1014.7 MAX. QFF PRESSURE IN HPA 1028.8 1029.1 1024.5 1020.5 1020.8 1012.5 1013.6 1013.7 1018.0 1024.3 1034.7 1029.3 1034.7 DAY 2 13 1 14 13 4 16 25 21 23 23 24 MIN. QFF PRESSURE IN HPA 1008.3 1011.4 1003.8 999.8 1002.0 999.0 992.2 1003.4 1002.8 1014.2 1012.4 1014.6 992.2 DAY 31 1 23 20 1 21 10 12 3 28 7 9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1958 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 866.8 867.1 864.4 864.5 867.4 863.3 862.0 866.0 867.2 871.0 873.8 869.3 866.9 MAX. QFE PRESSURE IN HPA 872.6 874.6 871.7 870.1 873.7 866.9 868.3 869.3 871.7 875.8 878.6 876.3 878.6 DAY 13 13 1 24 14 4 15 25 21 23 4 5 MIN. QFE PRESSURE IN HPA 857.1 857.1 858.3 854.2 859.7 859.8 852.5 863.2 862.3 865.5 866.8 864.3 852.5 DAY 31 3 23 20 2 21 10 12 2 17 7 9 MEAN QNH PRESSURE IN HPA 1018.8 1019.0 1016.0 1016.1 1019.4 1014.7 1013.3 1017.8 1019.3 1023.5 1026.7 1021.6 1018.9 MAX. QNH PRESSURE IN HPA 1025.4 1027.6 1024.3 1022.5 1026.6 1018.9 1020.5 1021.6 1024.3 1029.0 1032.2 1029.6 1032.2 DAY 13 13 1 24 14 4 15 25 21 23 4 5 MIN. QNH PRESSURE IN HPA 1007.7 1007.7 1009.1 1004.4 1010.7 1010.8 1002.4 1014.6 1013.6 1017.3 1018.7 1015.9 1002.4 DAY 31 3 23 20 2 21 10 12 2 17 7 9 MEAN QFF PRESSURE IN HPA 1021.1 1020.5 1013.2 1010.6 1011.8 1005.0 1002.3 1007.2 1010.5 1018.3 1028.0 1023.7 1014.4 MAX. QFF PRESSURE IN HPA 1029.8 1029.8 1024.8 1020.0 1020.8 1011.1 1012.7 1011.9 1018.1 1024.6 1034.5 1030.6 1034.5 DAY 2 13 1 14 13 4 15 26 21 23 23 5 MIN. QFF PRESSURE IN HPA 1008.8 1012.1 1003.8 998.4 1001.7 999.1 992.6 1003.0 1002.3 1012.6 1015.7 1014.3 992.6 DAY 31 3 23 20 2 30 10 17 2 17 7 9 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 866.1 866.3 863.6 863.4 866.6 862.3 860.8 865.0 866.2 869.8 872.7 868.3 865.9 MAX. QFE PRESSURE IN HPA 871.7 874.6 870.4 869.6 873.6 866.1 867.5 867.9 870.7 874.0 877.7 874.9 877.7 DAY 13 13 1 24 13 3 29 25 15 23 4 5 MIN. QFE PRESSURE IN HPA 856.2 857.1 857.8 851.2 859.2 859.0 851.4 862.5 861.3 864.7 866.1 862.8 851.2 DAY 30 3 9 20 2 30 10 7 2 16 7 1 MEAN QNH PRESSURE IN HPA 1017.9 1018.2 1015.1 1014.9 1018.6 1013.6 1011.9 1016.7 1018.1 1022.2 1025.4 1020.4 1017.8 MAX. QNH PRESSURE IN HPA 1024.3 1027.6 1022.8 1021.9 1026.5 1017.9 1019.5 1020.0 1023.2 1027.0 1031.2 1028.0 1031.2 DAY 13 13 1 24 13 3 29 25 15 23 4 5 MIN. QNH PRESSURE IN HPA 1006.7 1007.7 1008.5 1001.0 1010.1 1009.9 1001.2 1013.8 1012.5 1016.4 1017.9 1014.2 1001.0 DAY 30 3 9 20 2 30 10 7 2 16 7 1 MEAN QFF PRESSURE IN HPA 1018.9 1018.3 1011.4 1008.7 1010.3 1003.2 1000.2 1005.7 1008.9 1016.5 1026.0 1021.5 1012.5 MAX. QFF PRESSURE IN HPA 1027.0 1027.8 1022.0 1017.0 1019.8 1009.3 1009.7 1010.2 1016.2 1023.5 1032.3 1027.5 1032.3 DAY 2 13 1 14 13 3 16 26 21 31 23 5 MIN. QFF PRESSURE IN HPA 1007.8 1010.1 1002.1 993.5 1000.0 996.6 990.0 1002.2 1000.4 1011.2 1014.6 1012.2 990.0 DAY 30 3 23 20 1 30 10 17 2 3 7 9 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 864.9 865.5 862.4 862.1 865.7 861.4 860.0 863.9 865.1 868.9 871.9 867.7 864.9 MAX. QFE PRESSURE IN HPA 871.0 873.0 869.0 869.2 872.9 864.9 867.4 866.6 870.1 873.4 876.8 874.5 876.8 DAY 13 13 1 24 13 3 15 18 24 22 3 5 MIN. QFE PRESSURE IN HPA 853.0 857.9 855.1 849.9 858.3 857.5 850.3 861.2 860.2 864.5 865.7 860.8 849.9 DAY 30 3 9 20 2 20 9 16 2 16 30 1 MEAN QNH PRESSURE IN HPA 1016.5 1017.2 1013.7 1013.4 1017.5 1012.6 1011.0 1015.4 1016.8 1021.2 1024.6 1019.8 1016.6 MAX. QNH PRESSURE IN HPA 1023.5 1025.8 1021.3 1021.5 1025.7 1016.6 1019.4 1018.5 1022.5 1026.3 1030.1 1027.5 1030.1 DAY 13 13 1 24 13 3 15 18 24 22 3 5 MIN. QNH PRESSURE IN HPA 1003.0 1008.6 1005.4 999.5 1009.1 1008.1 999.9 1012.4 1011.2 1016.1 1017.5 1011.9 999.5 DAY 30 3 9 20 2 20 9 16 2 16 30 1 MEAN QFF PRESSURE IN HPA 1018.0 1017.9 1010.2 1007.4 1009.7 1002.4 999.5 1004.8 1008.1 1015.9 1025.8 1021.3 1011.8 MAX. QFF PRESSURE IN HPA 1026.7 1026.5 1020.6 1016.3 1019.1 1008.7 1011.0 1009.1 1016.1 1023.8 1032.1 1027.3 1032.1 DAY 2 13 1 24 13 4 15 26 24 31 23 5 MIN. QFF PRESSURE IN HPA 1003.9 1009.4 1002.2 992.1 1000.2 995.8 988.7 1001.1 1000.4 1010.7 1015.1 1013.1 988.7 DAY 30 23 9 20 2 20 9 16 2 3 7 9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1958 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 865.4 865.8 862.6 862.5 865.8 861.6 859.9 863.8 865.3 869.4 872.4 868.3 865.2 MAX. QFE PRESSURE IN HPA 871.6 873.8 868.9 868.7 873.0 867.4 868.2 867.7 869.9 874.2 876.6 876.2 876.6 DAY 2 13 1 24 13 3 15 24 21 31 3 5 MIN. QFE PRESSURE IN HPA 852.1 858.9 855.9 851.8 858.0 855.2 850.1 860.3 859.6 865.0 866.1 861.6 850.1 DAY 30 3 9 20 2 20 9 16 2 16 30 1 MEAN QNH PRESSURE IN HPA 1017.2 1017.7 1014.0 1013.8 1017.6 1012.8 1010.9 1015.3 1017.1 1021.7 1025.1 1020.5 1017.0 MAX. QNH PRESSURE IN HPA 1024.2 1026.7 1021.1 1020.9 1025.8 1019.4 1020.3 1019.8 1022.3 1027.2 1029.9 1029.5 1029.9 DAY 2 13 1 24 13 3 15 24 21 31 3 5 MIN. QNH PRESSURE IN HPA 1002.0 1009.7 1006.3 1001.6 1008.7 1005.5 999.7 1011.3 1010.5 1016.7 1017.9 1012.8 999.7 DAY 30 3 9 20 2 20 9 16 2 16 30 1 MEAN QFF PRESSURE IN HPA 1019.7 1019.9 1011.8 1009.0 1011.0 1003.8 1000.5 1005.7 1009.6 1017.7 1027.7 1023.0 1013.3 MAX. QFF PRESSURE IN HPA 1029.6 1029.1 1022.4 1018.1 1020.4 1011.6 1013.2 1011.1 1016.9 1026.6 1034.2 1030.8 1034.2 DAY 2 13 1 23 13 3 15 26 21 31 23 5 MIN. QFF PRESSURE IN HPA 1002.3 1009.9 1003.1 995.0 1001.3 993.8 989.7 1000.6 1000.7 1012.4 1016.5 1013.2 989.7 DAY 30 23 23 20 1 20 9 16 2 3 6 9 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 865.9 866.4 863.4 863.6 866.8 862.5 861.2 865.0 866.5 870.2 872.7 869.4 866.1 MAX. QFE PRESSURE IN HPA 871.9 874.2 869.2 869.8 874.2 866.0 868.7 870.2 870.9 875.2 877.0 888.5 888.5 DAY 2 13 27 24 13 3 15 24 24 31 3 7 MIN. QFE PRESSURE IN HPA 853.9 859.4 857.0 855.5 859.6 856.9 851.0 861.6 861.4 865.8 865.4 862.4 851.0 DAY 30 3 9 20 1 20 9 16 2 16 20 1 MEAN QNH PRESSURE IN HPA 1017.7 1018.3 1014.9 1015.1 1018.8 1013.8 1012.3 1016.6 1018.4 1022.6 1025.5 1021.7 1018.0 MAX. QNH PRESSURE IN HPA 1024.6 1027.2 1021.5 1022.2 1027.2 1017.8 1020.9 1022.6 1023.4 1028.3 1030.4 1043.5 1043.5 DAY 2 13 27 24 13 3 15 24 24 31 3 7 MIN. QNH PRESSURE IN HPA 1004.0 1010.3 1007.6 1005.9 1010.5 1007.5 1000.7 1012.8 1012.6 1017.6 1017.1 1013.7 1000.7 DAY 30 3 9 20 1 20 9 16 2 16 20 1 MEAN QFF PRESSURE IN HPA 1020.0 1019.7 1012.0 1009.6 1011.2 1004.2 1001.3 1006.1 1009.7 1017.5 1026.8 1023.8 1013.5 MAX. QFF PRESSURE IN HPA 1029.8 1029.0 1022.0 1018.5 1020.7 1009.6 1013.3 1012.0 1016.9 1027.2 1033.1 1044.8 1044.8 DAY 2 13 1 24 13 13 15 24 21 31 23 7 MIN. QFF PRESSURE IN HPA 1004.5 1010.6 1004.4 1000.2 1001.4 996.0 990.7 1001.7 1001.1 1013.0 1014.2 1012.3 990.7 DAY 30 23 22 20 1 20 3 16 2 16 6 9 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 865.7 866.6 863.4 863.7 866.7 862.5 861.2 865.0 866.5 870.1 872.5 868.5 866.0 MAX. QFE PRESSURE IN HPA 871.3 873.8 869.9 869.9 873.7 866.6 869.0 869.7 870.9 875.4 876.9 875.6 876.9 DAY 2 13 27 23 13 3 15 24 24 31 4 5 MIN. QFE PRESSURE IN HPA 853.8 859.9 857.6 856.5 855.2 857.2 851.6 861.9 861.0 865.8 864.8 862.2 851.6 DAY 31 3 24 20 1 20 9 16 2 16 20 1 MEAN QNH PRESSURE IN HPA 1017.4 1018.5 1014.9 1015.2 1018.6 1013.8 1012.4 1016.7 1018.4 1022.5 1025.3 1020.7 1017.8 MAX. QNH PRESSURE IN HPA 1023.9 1026.7 1022.3 1022.3 1026.6 1018.5 1021.3 1022.1 1023.4 1028.6 1030.3 1028.8 1030.3 DAY 2 13 27 23 13 3 15 24 24 31 4 5 MIN. QNH PRESSURE IN HPA 1003.9 1010.9 1008.3 1007.0 1005.5 1007.8 1001.4 1013.2 1012.1 1017.6 1016.5 1013.5 1001.4 DAY 31 3 24 20 1 20 9 16 2 16 20 1 MEAN QFF PRESSURE IN HPA 1018.4 1018.6 1011.2 1009.0 1010.4 1003.4 1000.6 1005.8 1009.2 1016.9 1025.8 1021.8 1012.6 MAX. QFF PRESSURE IN HPA 1026.8 1026.8 1020.6 1018.2 1019.3 1010.9 1013.1 1012.1 1017.1 1027.8 1031.6 1028.6 1031.6 DAY 2 13 1 24 13 3 15 24 24 31 22 5 MIN. QFF PRESSURE IN HPA 1004.7 1009.7 1002.8 1000.2 996.0 995.4 989.8 1001.5 1000.7 1012.4 1011.4 1012.9 989.8 DAY 31 23 22 20 1 20 3 12 2 16 6 9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1959 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 0.6 -0.4 7.1 17.2 18.8 23.0 24.8 25.8 22.4 15.2 5.9 0.7 13.4 MINIMUN AIR TEMPERATURE (C) -3.0 -4.1 2.4 10.6 13.4 17.1 18.8 20.3 16.5 9.5 1.6 -2.8 8.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 1 4 8 12 0 0 0 0 25 DAYS WITH MINIMUM TEMP. <=-4 13 16 1 0 0 0 0 0 0 0 0 11 41 DAYS WITH FREEZING MIN.<= 0 30 28 9 0 0 0 0 0 0 0 12 28 107 TEMPERATURE RECORDS LOWEST(C) -8.0 -8.0 -4.0 3.0 4.0 12.0 14.0 17.0 12.0 7.0 -3.0 -9.0 -9.0 DAY 28 11 9 2 4 3 15 26 30 6 21 15 MAXIMUM AIR TEMPERATURE (C) 7.1 5.2 14.1 24.5 25.9 30.1 32.0 33.1 30.7 23.5 12.7 7.2 20.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 4 7 17 26 27 21 2 0 0 104 DAYS WITH MAXIMUM TEMP. <= 0 0 2 0 0 0 0 0 0 0 0 0 1 3 TEMPERATURE RECORDS HIGHEST(C) 12.0 12.0 21.0 32.0 34.0 36.0 36.0 38.0 35.0 32.0 20.0 13.0 38.0 DAY 17 1 18 25 29 25 25 6 2 1 12 23 DIF. BETWEEN (MAX.-MIN.) (C) 10.1 9.3 11.7 13.9 12.5 13.0 13.2 12.8 14.2 14.0 11.1 10.0 12.2 MEAN DAILY TEMP. (MDT) (C) 2.0 0.5 8.2 17.5 19.6 23.6 25.4 26.7 23.6 16.5 7.1 2.2 14.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 9.5 30.5 89.0 135.5 177.5 82.5 4.0 0.0 0.0 528.5 HEATING DEG. DAYS(BASE 18 0C) 495.0 489.5 303.5 59.0 25.5 0.0 0.0 0.0 0.0 60.5 326.0 490.0 2249.0 DEWPOINT (MEAN C) -4.3 -5.4 -1.7 2.8 6.6 9.5 10.7 11.5 9.0 4.1 -1.2 -4.9 3.1 MIXING RATIO (G/KG) 3.25 3.01 4.10 5.53 7.26 8.87 9.63 10.14 8.57 6.02 4.09 3.13 6.13 VAPOUR PRESSURE (HPA) 4.50 4.16 5.67 7.62 9.96 12.14 13.12 13.81 11.73 8.32 5.69 4.36 8.42 SATURATION DEF. (HPA) 2.13 1.98 4.95 13.33 13.01 17.28 19.35 20.52 16.68 9.96 4.04 2.31 10.46 RELATIVE HUMIDITY (MEAN %) 72 71 57 41 49 45 44 44 45 51 64 68 54 RELATIVE HUMIDITY (MAX. %) 84 86 75 60 68 61 61 59 63 70 79 82 71 RELATIVE HUMIDITY (MIN. %) 54 50 36 25 31 29 27 26 28 30 44 48 36 RELATIVE HUMIDITY (MEAN% 03UTC) 82 83 72 56 59 57 55 55 57 65 76 78 66 RELATIVE HUMIDITY (MEAN% 09UTC) 58 53 42 28 33 31 29 30 30 32 46 50 39 RELATIVE HUMIDITY (MEAN% 15UTC) 70 70 52 36 45 42 39 40 44 52 64 68 52 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 38.2 9.5 19.1 9.6 69.0 13.3 1.3 0.0 0.0 0.2 23.7 0.4 184.3 DAYS WITH PRECIPITATION >=10 3 0 0 0 3 1 0 0 0 0 1 0 8 DAYS WITH PRECIPITATION >= 5 3 1 2 1 5 1 0 0 0 0 1 0 14 DAYS WITH PRECIPITATION >= 1 4 2 4 3 7 2 1 0 0 0 3 0 26 DAYS WITH PRECIPITATION 5 15 9 6 14 4 3 3 0 4 6 4 73 GREATEST DAILY PRECIPITATION 13.0 6.0 7.0 7.0 27.0 12.3 1.0 0.0 0.0 0.2 15.0 0.4 27.0 DAY 22 21 14 19 2 2 30 ** ** 24 25 12 DAY WITH THUNDER STORM 0 0 0 1 4 2 0 0 0 0 0 0 7 DAYS WITH SNOW OR SLEET 3 8 0 0 0 0 0 0 0 2 4 0 17 DAYS WITH DUST 0 0 1 1 1 0 2 1 0 1 1 0 8 WIND DIRECTION (PREVAILING) 45 45 45 45 45 45 45 45 45 45 45 45 45 PREVAILING WIND SPEED(KNOTS) 5.6 5.9 5.8 5.7 5.1 5.1 6.2 5.5 4.8 5.6 5.8 5.4 5.5 PREVAILING WIND PERCENT 27.5 24.7 30.8 25.9 36.8 43.5 48.6 50.2 50.6 31.2 29.3 22.7 35.2 CALMS PERCENT OF WIND 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NO. OF WIND OBSERVATION 247 223 247 239 247 239 247 247 239 247 239 247 2908 VECTOR WIND DIRECTION (MEAN) 44 16 42 40 50 46 44 48 52 61 63 86 49 VECTOR WIND MAGNITUDE(KNOTS) 1.3 1.1 1.8 1.5 2.5 3.2 4.6 4.1 3.5 2.2 1.9 0.7 2.3 WIND STEADINESES (MEAN %) 24.1 16.9 31.0 26.3 48.1 66.7 80.7 80.4 74.5 40.7 35.2 12.5 41.8 WIND SPEED (MEAN KNOTS) 5.4 6.5 5.8 5.7 5.2 4.8 5.7 5.1 4.7 5.4 5.4 5.6 5.5 FASTEST WIND DIRECTION 50 270 210 230 50 30 50 90 90 360 230 230 270 FASTEST WIND SPEED (KNOTS) 12 20 14 20 15 17 18 13 11 13 12 13 20 DAY 17 20 18 7 31 7 3 17 7 30 20 13 DAYS WITH SKY CLEAR (0-2)/8 15 6 6 12 9 18 22 23 29 23 11 13 187 DAYS WITH P.CLOUDY (3-6)/8 8 17 13 8 13 12 9 8 1 5 9 9 112 DAYS WITH CLOUDY (7-8)/8 8 5 12 10 9 0 0 0 0 3 10 9 66 DAYS WITH VISIBILITY =< 2 KM 4 3 0 1 0 0 0 0 0 2 4 1 15 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1959 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 868.0 863.2 865.3 866.1 864.3 863.8 861.6 861.5 863.9 868.3 869.9 871.5 865.6 MAX. QFE PRESSURE IN HPA 873.2 870.7 871.6 874.9 870.0 869.9 867.5 868.8 870.8 894.9 892.7 878.6 894.9 DAY-HOUR 13-18 3- 6 20-18 2-15 4- 6 21- 6 9- 0 1-12 24- 6 26- 3 9-15 9- 9 MIN. QFE PRESSURE IN HPA 858.9 852.2 855.4 854.8 855.2 853.6 857.5 856.6 857.9 859.3 861.4 865.1 852.2 DAY-HOUR 23- 9 20-15 1- 9 6-15 19-15 11-12 25-15 16-12 11-15 12-12 26- 0 20-12 MEAN QNH PRESSURE IN HPA 1020.1 1014.6 1017.1 1018.0 1015.9 1015.4 1012.8 1012.7 1015.4 1020.5 1022.2 1024.1 1017.4 MAX. QNH PRESSURE IN HPA 1026.0 1023.2 1024.2 1028.0 1022.4 1022.3 1019.5 1021.0 1023.3 1050.8 1048.3 1032.2 1050.8 DAY-HOUR 13-18 3- 6 20-18 2-15 4- 6 21- 6 9- 0 1-12 24- 6 26- 3 9-15 9- 9 MIN. QNH PRESSURE IN HPA 1009.7 1002.1 1005.7 1005.1 1005.5 1003.7 1008.1 1007.1 1008.6 1010.2 1012.6 1016.8 1002.1 DAY-HOUR 23- 9 20-15 1- 9 6-15 19-15 11-12 25-15 16-12 11-15 12-12 26- 0 20-12 MEAN QFF PRESSURE IN HPA 1023.5 1018.5 1016.6 1011.8 1008.5 1005.7 1002.1 1001.4 1006.0 1015.2 1022.5 1027.6 1013.3 MAX. QFF PRESSURE IN HPA 1031.7 1027.3 1025.5 1027.5 1020.2 1014.7 1010.0 1008.7 1015.8 1046.5 1048.7 1036.9 1048.7 DAY-HOUR 3- 6 11- 3 15- 3 2-15 4- 3 8- 3 15- 3 23-21 24- 6 26- 3 9-15 28- 3 MIN. QFF PRESSURE IN HPA 1012.8 1002.4 1006.7 998.7 998.3 995.1 995.0 994.0 997.5 1003.3 1013.2 1019.3 994.0 DAY-HOUR 23- 9 25-21 18-12 6-21 19-15 11-12 25-21 16- 9 15-12 12-12 19-21 12-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 868.0 863.1 864.9 865.9 864.2 863.8 861.7 861.5 864.1 868.2 869.5 871.3 865.5 MAX. QFE PRESSURE IN HPA 871.9 869.6 871.0 872.4 869.0 868.5 867.5 864.4 868.2 876.8 875.0 876.4 876.8 DAY 14 3 15 9 5 21 9 30 17 21 22 28 MIN. QFE PRESSURE IN HPA 860.6 854.4 856.2 856.8 856.9 857.7 858.6 857.8 860.3 862.5 861.4 866.0 854.4 DAY 24 26 1 7 20 28 28 2 12 12 26 21 MEAN QNH PRESSURE IN HPA 1020.1 1014.6 1016.6 1017.7 1015.8 1015.3 1012.9 1012.7 1015.6 1020.3 1021.8 1023.9 1017.3 MAX. QNH PRESSURE IN HPA 1024.6 1021.9 1023.5 1025.1 1021.3 1020.7 1019.5 1016.0 1020.3 1030.1 1028.1 1029.7 1030.1 DAY 14 3 15 9 5 21 9 30 17 21 22 28 MIN. QNH PRESSURE IN HPA 1011.7 1004.6 1006.7 1007.3 1007.5 1008.4 1009.4 1008.5 1011.3 1013.8 1012.6 1017.8 1004.6 DAY 24 26 1 7 20 28 28 2 12 12 26 21 MEAN QFF PRESSURE IN HPA 1023.1 1018.1 1015.7 1011.3 1008.2 1005.6 1001.9 1001.1 1005.7 1014.5 1021.7 1027.1 1012.8 MAX. QFF PRESSURE IN HPA 1029.5 1027.1 1023.9 1020.8 1018.8 1013.5 1009.1 1006.2 1012.6 1025.7 1030.3 1033.8 1033.8 DAY 3 11 25 9 4 8 9 27 25 21 22 15 MIN. QFF PRESSURE IN HPA 1015.4 1004.7 1007.7 1001.9 998.8 996.7 996.2 996.1 1000.2 1006.3 1013.7 1020.9 996.1 DAY 23 26 19 7 30 28 26 16 6 3 20 21 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 868.0 863.0 865.6 866.6 864.9 864.6 862.4 862.4 864.8 869.4 869.8 871.5 866.1 MAX. QFE PRESSURE IN HPA 871.7 870.2 871.4 872.7 869.5 869.6 866.0 865.2 869.5 894.9 875.3 877.4 894.9 DAY 3 3 21 9 4 21 15 29 24 26 22 28 MIN. QFE PRESSURE IN HPA 860.6 853.3 855.9 859.6 858.4 858.1 859.7 858.8 860.8 862.3 864.0 866.9 853.3 DAY 23 17 1 7 20 28 26 16 12 12 26 12 MEAN QNH PRESSURE IN HPA 1020.1 1014.4 1017.3 1018.5 1016.6 1016.3 1013.7 1013.7 1016.4 1021.7 1022.2 1024.1 1017.9 MAX. QNH PRESSURE IN HPA 1024.3 1022.6 1024.0 1025.5 1021.8 1021.9 1017.8 1016.9 1021.8 1050.8 1028.4 1030.8 1050.8 DAY 3 3 21 9 4 21 15 29 24 26 22 28 MIN. QNH PRESSURE IN HPA 1011.7 1003.4 1006.3 1010.5 1009.2 1008.8 1010.7 1009.6 1011.9 1013.6 1015.6 1018.9 1003.4 DAY 23 17 1 7 20 28 26 16 12 12 26 12 MEAN QFF PRESSURE IN HPA 1024.4 1019.1 1017.6 1013.1 1009.6 1007.3 1003.6 1003.2 1008.1 1017.7 1023.3 1028.5 1014.6 MAX. QFF PRESSURE IN HPA 1031.3 1027.3 1025.5 1022.4 1020.2 1014.7 1010.0 1007.7 1015.3 1046.5 1031.9 1036.9 1046.5 DAY 3 11 15 9 4 8 15 27 24 26 22 28 MIN. QFF PRESSURE IN HPA 1015.5 1008.5 1009.3 1005.6 1000.9 998.0 998.4 998.1 1001.6 1008.2 1015.4 1021.2 998.0 DAY 23 17 1 7 30 28 26 16 6 3 20 12 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1959 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 868.9 864.1 866.4 867.2 865.4 864.8 862.5 862.6 865.2 869.4 871.3 872.2 866.7 MAX. QFE PRESSURE IN HPA 872.7 870.7 871.5 873.5 870.0 869.9 866.1 865.5 870.8 878.3 891.5 877.9 891.5 DAY 3 3 21 9 4 21 15 29 24 20 11 28 MIN. QFE PRESSURE IN HPA 860.3 857.6 857.0 860.5 859.2 857.5 859.8 858.4 860.8 862.7 865.7 867.2 857.0 DAY 23 20 1 5 20 28 26 16 6 12 26 12 MEAN QNH PRESSURE IN HPA 1021.1 1015.7 1018.3 1019.2 1017.1 1016.4 1013.9 1014.0 1017.0 1021.7 1023.9 1024.9 1018.6 MAX. QNH PRESSURE IN HPA 1025.5 1023.2 1024.1 1026.4 1022.4 1022.3 1017.9 1017.3 1023.3 1031.9 1046.9 1031.4 1046.9 DAY 3 3 21 9 4 21 15 29 24 20 11 28 MIN. QNH PRESSURE IN HPA 1011.3 1008.3 1007.6 1011.6 1010.1 1008.1 1010.8 1009.2 1011.9 1014.1 1017.5 1019.2 1007.6 DAY 23 20 1 5 20 28 26 16 6 12 26 12 MEAN QFF PRESSURE IN HPA 1024.9 1019.6 1018.1 1012.8 1009.7 1006.8 1003.0 1002.7 1007.5 1016.2 1024.1 1028.7 1014.5 MAX. QFF PRESSURE IN HPA 1031.7 1026.8 1025.0 1022.1 1020.1 1013.4 1008.8 1007.0 1015.8 1028.4 1045.9 1036.7 1045.9 DAY 3 3 25 9 4 8 15 27 24 20 11 28 MIN. QFF PRESSURE IN HPA 1014.9 1010.0 1009.6 1006.5 1001.8 997.4 998.3 996.2 1001.6 1007.1 1016.3 1021.7 996.2 DAY 23 26 1 19 30 28 26 16 6 3 20 12 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 867.9 863.4 865.5 866.6 864.5 864.0 861.7 861.6 863.9 868.1 869.6 871.6 865.7 MAX. QFE PRESSURE IN HPA 871.6 869.7 870.4 872.2 869.6 869.1 865.0 864.9 869.4 877.3 875.5 878.6 878.6 DAY 29 3 21 9 4 21 15 29 24 20 22 9 MIN. QFE PRESSURE IN HPA 858.9 855.7 855.4 859.0 859.2 856.9 858.3 857.2 859.6 860.3 865.3 866.1 855.4 DAY 23 20 1 5 19 28 27 16 12 12 25 12 MEAN QNH PRESSURE IN HPA 1020.0 1014.9 1017.2 1018.5 1016.1 1015.5 1012.9 1012.8 1015.5 1020.2 1021.9 1024.2 1017.5 MAX. QNH PRESSURE IN HPA 1024.2 1022.1 1022.8 1024.9 1021.9 1021.4 1016.7 1016.6 1021.7 1030.7 1028.7 1032.2 1032.2 DAY 29 3 21 9 4 21 15 29 24 20 22 9 MIN. QNH PRESSURE IN HPA 1009.7 1006.1 1005.7 1009.9 1010.1 1007.5 1009.1 1007.8 1010.5 1011.3 1017.0 1017.9 1005.7 DAY 23 20 1 5 19 28 27 16 12 12 25 12 MEAN QFF PRESSURE IN HPA 1022.6 1018.2 1016.5 1011.8 1008.3 1005.7 1001.9 1001.1 1005.5 1014.4 1021.5 1026.9 1012.9 MAX. QFF PRESSURE IN HPA 1028.6 1025.1 1022.9 1020.7 1019.1 1012.2 1007.2 1005.3 1013.5 1026.7 1030.4 1033.5 1033.5 DAY 3 3 25 8 4 7 15 29 24 20 22 28 MIN. QFF PRESSURE IN HPA 1012.8 1008.2 1008.5 1004.6 1001.1 996.4 996.2 994.0 999.0 1005.5 1016.0 1019.9 994.0 DAY 23 20 18 5 30 28 26 16 12 12 19 12 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 867.2 862.4 864.3 865.3 863.6 862.7 861.0 860.7 862.6 867.2 868.9 870.9 864.7 MAX. QFE PRESSURE IN HPA 871.2 867.9 869.4 871.0 868.7 868.4 867.5 868.8 868.2 876.8 874.1 878.2 878.2 DAY 13 3 20 8 4 21 26 1 24 20 22 9 MIN. QFE PRESSURE IN HPA 859.1 852.7 855.8 857.7 856.9 853.6 857.7 856.6 858.4 859.3 863.2 865.1 852.7 DAY 23 20 1 6 19 11 27 16 15 12 25 20 MEAN QNH PRESSURE IN HPA 1019.3 1013.7 1015.9 1017.0 1015.0 1014.1 1012.1 1011.8 1013.9 1019.2 1021.2 1023.5 1016.4 MAX. QNH PRESSURE IN HPA 1023.8 1020.0 1021.7 1023.5 1020.9 1020.6 1019.5 1021.0 1020.3 1030.1 1027.1 1031.7 1031.7 DAY 13 3 20 8 4 21 26 1 24 20 22 9 MIN. QNH PRESSURE IN HPA 1010.0 1002.7 1006.2 1008.4 1007.5 1003.7 1008.4 1007.1 1009.2 1010.2 1014.6 1016.8 1002.7 DAY 23 20 1 6 19 11 27 16 15 12 25 20 MEAN QFF PRESSURE IN HPA 1022.1 1017.2 1014.9 1010.6 1007.6 1004.1 1001.1 1000.2 1004.0 1013.5 1021.1 1026.5 1011.9 MAX. QFF PRESSURE IN HPA 1027.9 1023.6 1020.1 1019.6 1017.4 1012.7 1006.7 1008.4 1012.3 1025.9 1029.4 1033.3 1033.3 DAY 3 10 20 8 4 7 15 1 24 20 21 9 MIN. QFF PRESSURE IN HPA 1013.4 1004.7 1006.7 1003.6 999.3 995.1 996.6 994.5 997.5 1003.3 1015.6 1019.3 994.5 DAY 23 20 18 18 19 11 30 16 15 12 19 12 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1959 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 867.9 862.8 864.8 865.6 863.5 863.2 860.7 860.4 862.8 867.7 870.2 871.1 865.1 MAX. QFE PRESSURE IN HPA 872.8 868.0 870.2 874.9 869.0 868.4 864.8 864.6 868.2 877.0 892.7 876.0 892.7 DAY 13 10 20 2 4 21 8 29 24 20 9 27 MIN. QFE PRESSURE IN HPA 860.1 852.2 858.7 854.8 855.2 855.8 857.5 856.9 857.9 860.2 863.2 865.4 852.2 DAY 23 20 1 6 19 28 25 16 11 12 25 20 MEAN QNH PRESSURE IN HPA 1020.0 1014.2 1016.5 1017.3 1015.0 1014.6 1011.8 1011.5 1014.1 1019.8 1022.6 1023.7 1016.8 MAX. QNH PRESSURE IN HPA 1025.6 1020.1 1022.6 1028.0 1021.3 1020.6 1016.5 1016.2 1020.3 1030.4 1048.3 1029.2 1048.3 DAY 13 10 20 2 4 21 8 29 24 20 9 27 MIN. QNH PRESSURE IN HPA 1011.1 1002.1 1009.5 1005.1 1005.5 1006.2 1008.1 1007.5 1008.6 1011.2 1014.6 1017.1 1002.1 DAY 23 20 1 6 19 28 25 16 11 12 25 20 MEAN QFF PRESSURE IN HPA 1024.2 1018.9 1016.5 1011.9 1008.0 1005.4 1001.6 1000.9 1005.7 1015.8 1023.8 1028.0 1013.4 MAX. QFF PRESSURE IN HPA 1029.8 1026.6 1022.8 1027.5 1018.0 1013.3 1007.2 1006.9 1013.8 1028.1 1048.7 1035.4 1048.7 DAY 29 10 14 2 4 7 14 27 24 20 9 16 MIN. QFF PRESSURE IN HPA 1015.6 1005.6 1007.3 1000.3 998.3 996.5 996.0 995.5 998.8 1007.0 1017.4 1021.2 995.5 DAY 23 20 18 6 19 28 25 1 11 12 12 20 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 868.1 863.3 865.6 866.1 864.3 863.8 861.6 861.3 863.8 868.4 869.9 871.8 865.7 MAX. QFE PRESSURE IN HPA 873.2 868.9 871.6 872.2 869.8 869.1 865.8 865.0 868.8 877.6 875.0 877.0 877.6 DAY 13 2 20 8 4 7 15 29 24 20 3 27 MIN. QFE PRESSURE IN HPA 860.2 853.5 861.0 855.4 855.8 857.8 857.6 857.8 860.1 861.0 862.7 865.7 853.5 DAY 23 25 1 6 19 27 25 1 11 12 25 20 MEAN QNH PRESSURE IN HPA 1020.3 1014.7 1017.4 1018.0 1015.9 1015.4 1012.8 1012.5 1015.3 1020.5 1022.3 1024.4 1017.5 MAX. QNH PRESSURE IN HPA 1026.0 1021.1 1024.2 1024.9 1022.2 1021.4 1017.6 1016.7 1021.0 1031.1 1028.1 1030.4 1031.1 DAY 13 2 20 8 4 7 15 29 24 20 3 27 MIN. QNH PRESSURE IN HPA 1011.2 1003.6 1012.1 1005.7 1006.2 1008.5 1008.3 1008.5 1011.1 1012.1 1014.1 1017.5 1003.6 DAY 23 25 1 6 19 27 25 1 11 12 25 20 MEAN QFF PRESSURE IN HPA 1024.1 1018.6 1017.0 1011.6 1008.5 1005.6 1002.0 1001.2 1006.0 1015.2 1022.5 1028.3 1013.4 MAX. QFF PRESSURE IN HPA 1029.6 1025.8 1023.6 1020.6 1019.0 1014.2 1008.5 1006.7 1013.6 1027.3 1030.4 1035.3 1035.3 DAY 2 10 20 8 3 7 15 27 24 20 21 27 MIN. QFF PRESSURE IN HPA 1015.8 1003.8 1008.8 1000.8 998.6 997.4 996.0 996.1 1000.6 1005.8 1015.0 1021.4 996.0 DAY 23 25 31 6 19 26 25 1 2 12 19 20 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 868.1 863.3 865.6 866.2 864.3 863.9 861.7 861.6 863.9 868.4 869.8 871.5 865.7 MAX. QFE PRESSURE IN HPA 872.3 869.4 871.5 872.8 869.5 868.6 865.8 868.4 868.5 877.3 874.9 876.6 877.3 DAY 13 2 20 8 4 7 15 23 24 20 21 27 MIN. QFE PRESSURE IN HPA 860.4 852.8 860.7 855.0 856.4 857.6 857.6 858.0 860.0 862.2 861.9 865.7 852.8 DAY 23 25 18 6 19 27 25 1 2 12 25 20 MEAN QNH PRESSURE IN HPA 1020.2 1014.7 1017.4 1018.0 1015.9 1015.4 1012.9 1012.8 1015.4 1020.5 1022.2 1024.1 1017.5 MAX. QNH PRESSURE IN HPA 1025.0 1021.7 1024.1 1025.6 1021.8 1020.8 1017.6 1020.6 1020.7 1030.7 1028.0 1029.9 1030.7 DAY 13 2 20 8 4 7 15 23 24 20 21 27 MIN. QNH PRESSURE IN HPA 1011.4 1002.8 1011.8 1005.3 1006.9 1008.3 1008.3 1008.7 1011.0 1013.5 1013.2 1017.5 1002.8 DAY 23 25 18 6 19 27 25 1 2 12 25 20 MEAN QFF PRESSURE IN HPA 1022.9 1018.0 1016.4 1011.2 1008.2 1005.5 1001.8 1001.1 1005.5 1014.6 1021.6 1026.8 1012.8 MAX. QFF PRESSURE IN HPA 1028.5 1025.5 1023.3 1020.9 1018.9 1012.6 1008.3 1008.7 1012.7 1026.1 1029.9 1033.5 1033.5 DAY 2 10 24 8 3 7 15 23 24 20 21 16 MIN. QFF PRESSURE IN HPA 1015.6 1002.4 1006.7 998.7 999.0 996.5 995.0 996.2 999.8 1006.5 1013.2 1020.5 995.0 DAY 23 25 18 6 19 27 25 15 2 12 19 20 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1960 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.1 7.1 5.3 11.9 19.2 24.3 25.1 25.7 20.6 15.6 7.4 3.6 14.1 MINIMUN AIR TEMPERATURE (C) -1.3 1.5 0.0 6.8 12.5 18.0 19.6 19.5 14.4 9.5 3.0 -0.9 8.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 1 5 12 11 0 0 0 0 29 DAYS WITH MINIMUM TEMP. <=-4 3 1 6 0 0 0 0 0 0 0 0 1 11 DAYS WITH FREEZING MIN.<= 0 27 12 17 0 0 0 0 0 0 0 9 24 89 TEMPERATURE RECORDS LOWEST(C) -6.0 -5.0 -8.0 1.0 6.0 13.0 15.0 16.0 12.0 7.0 -2.0 -4.0 -8.0 DAY 28 11 20 8 4 7 12 1 25 12 26 29 MAXIMUM AIR TEMPERATURE (C) 10.8 15.1 12.3 19.0 27.1 31.9 31.9 33.4 28.6 24.3 14.9 11.8 21.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 12 23 27 30 12 0 0 0 104 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 16.0 22.0 21.0 29.0 35.0 36.0 38.0 36.0 33.0 28.0 24.0 17.0 38.0 DAY 24 27 1 26 12 25 6 9 14 1 3 9 DIF. BETWEEN (MAX.-MIN.) (C) 12.1 13.6 12.3 12.2 14.6 13.9 12.3 13.9 14.2 14.8 11.9 12.7 13.2 MEAN DAILY TEMP. (MDT) (C) 4.8 8.3 6.2 12.9 19.8 24.9 25.8 26.5 21.5 16.9 9.0 5.5 15.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 1.0 36.5 119.0 148.0 169.0 27.5 0.0 0.0 0.0 501.0 HEATING DEG. DAYS(BASE 18 0C) 410.0 280.5 367.0 163.5 34.0 0.0 0.0 0.0 0.0 48.0 271.0 388.5 1962.5 DEWPOINT (MEAN C) -4.8 -3.6 -5.2 1.8 5.7 9.7 9.1 11.2 7.8 4.5 0.5 -4.1 2.7 MIXING RATIO (G/KG) 3.15 3.44 3.09 5.24 6.84 8.90 8.60 9.91 7.84 6.13 4.73 3.30 5.93 VAPOUR PRESSURE (HPA) 4.37 4.77 4.27 7.22 9.42 12.18 11.75 13.52 10.79 8.49 6.56 4.60 8.16 SATURATION DEF. (HPA) 3.58 5.96 5.23 7.69 14.43 19.36 21.13 20.67 14.48 10.12 4.37 3.65 10.89 RELATIVE HUMIDITY (MEAN %) 59 50 50 54 44 42 38 43 47 50 64 60 50 RELATIVE HUMIDITY (MAX. %) 75 68 71 72 65 60 53 59 66 70 80 76 68 RELATIVE HUMIDITY (MIN. %) 37 30 29 36 27 27 24 27 28 30 44 39 32 RELATIVE HUMIDITY (MEAN% 03UTC) 72 65 69 68 56 54 49 55 63 65 78 71 64 RELATIVE HUMIDITY (MEAN% 09UTC) 39 31 34 39 30 29 26 30 30 30 45 42 34 RELATIVE HUMIDITY (MEAN% 15UTC) 58 43 42 46 38 36 34 39 44 51 64 61 46 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 0.2 0.0 19.2 36.2 2.3 0.2 3.0 0.0 0.0 0.0 15.7 0.2 77.0 DAYS WITH PRECIPITATION >=10 0 0 0 2 0 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 5 0 0 1 3 0 0 0 0 0 0 2 0 6 DAYS WITH PRECIPITATION >= 1 0 0 4 5 2 0 1 0 0 0 2 0 14 DAYS WITH PRECIPITATION 3 1 9 14 5 4 4 0 1 0 6 3 50 GREATEST DAILY PRECIPITATION 0.2 0.0 9.0 11.0 1.0 0.2 3.0 0.0 0.0 0.0 9.0 0.2 11.0 DAY 8 ** 24 20 2 30 23 ** ** ** 7 3 DAY WITH THUNDER STORM 0 0 1 3 0 2 2 0 0 0 0 0 8 DAYS WITH SNOW OR SLEET 0 0 2 0 0 0 0 0 0 0 0 0 2 DAYS WITH DUST 0 1 3 2 1 0 0 0 0 2 0 0 9 WIND DIRECTION (PREVAILING) 45 225 45 45 45 45 45 45 45 45 45 45 45 PREVAILING WIND SPEED(KNOTS) 5.7 6.1 6.2 6.9 5.5 6.1 7.3 5.0 6.3 5.5 4.7 5.3 5.9 PREVAILING WIND PERCENT 21.1 23.8 20.6 28.0 29.1 44.8 44.1 47.8 46.0 28.7 25.5 30.8 32.5 CALMS PERCENT OF WIND 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NO. OF WIND OBSERVATION 247 231 247 239 247 239 247 247 239 247 239 247 2916 VECTOR WIND DIRECTION (MEAN) 96 94 99 65 48 45 47 54 55 55 37 57 55 VECTOR WIND MAGNITUDE(KNOTS) 0.8 0.7 0.5 2.1 2.3 4.0 5.5 3.9 4.1 2.3 0.7 1.9 2.3 WIND STEADINESES (MEAN %) 14.3 12.3 6.8 32.3 39.7 70.2 78.6 81.3 70.7 41.8 14.6 35.2 39.7 WIND SPEED (MEAN KNOTS) 5.6 5.7 7.3 6.5 5.8 5.7 7.0 4.8 5.8 5.5 4.8 5.4 5.8 FASTEST WIND DIRECTION 230 230 270 50 270 130 230 50 50 360 230 230 270 FASTEST WIND SPEED (KNOTS) 18 13 36 15 25 18 17 15 15 18 14 10 36 DAY 17 27 19 7 4 19 23 14 9 15 16 18 DAYS WITH SKY CLEAR (0-2)/8 17 11 14 5 17 22 19 28 25 23 17 17 215 DAYS WITH P.CLOUDY (3-6)/8 10 12 11 10 11 7 9 3 5 7 7 10 102 DAYS WITH CLOUDY (7-8)/8 4 6 6 15 3 1 3 0 0 1 6 4 49 DAYS WITH VISIBILITY =< 2 KM 0 0 3 0 0 0 0 0 0 0 0 0 3 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1960 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 868.4 867.6 863.7 865.1 866.5 863.5 862.5 862.7 867.6 870.4 870.5 871.2 866.7 MAX. QFE PRESSURE IN HPA 875.4 883.4 871.3 879.8 873.6 869.5 869.1 869.6 871.5 890.4 877.8 886.9 890.4 DAY-HOUR 19- 6 22- 6 20- 6 7-21 5-18 7- 6 17- 6 27- 9 6- 6 6- 9 26- 6 6-21 MIN. QFE PRESSURE IN HPA 862.2 857.5 852.9 859.2 858.1 856.4 855.7 857.8 862.3 863.3 858.5 863.1 852.9 DAY-HOUR 8- 0 29-18 2-15 11- 3 31-12 30-15 28- 6 11-12 4-15 8-12 20- 3 30- 3 MEAN QNH PRESSURE IN HPA 1020.6 1019.6 1015.3 1016.8 1018.4 1015.0 1013.8 1014.0 1019.7 1022.9 1022.9 1023.8 1018.6 MAX. QNH PRESSURE IN HPA 1028.6 1037.7 1023.9 1033.6 1026.5 1021.8 1021.4 1021.9 1024.1 1045.6 1031.3 1041.7 1045.6 DAY-HOUR 19- 6 22- 6 20- 6 7-21 5-18 7- 6 17- 6 27- 9 6- 6 6- 9 26- 6 6-21 MIN. QNH PRESSURE IN HPA 1013.5 1008.1 1002.9 1010.1 1008.8 1006.9 1006.1 1008.5 1013.6 1014.8 1009.3 1014.5 1002.9 DAY-HOUR 8- 0 29-18 2-15 11- 3 31-12 30-15 28- 6 11-12 4-15 8-12 20- 3 30- 3 MEAN QFF PRESSURE IN HPA 1022.5 1019.2 1015.8 1013.4 1011.0 1004.7 1003.0 1002.9 1011.4 1017.5 1022.3 1025.5 1014.1 MAX. QFF PRESSURE IN HPA 1030.2 1035.3 1029.9 1033.6 1022.4 1014.2 1010.8 1011.4 1017.2 1038.4 1033.3 1042.9 1042.9 DAY-HOUR 19- 6 22- 6 20- 3 7-21 5-21 7- 6 17- 3 27- 9 21- 6 6- 9 26- 6 6-21 MIN. QFF PRESSURE IN HPA 1014.1 1003.3 999.7 1004.3 998.5 995.3 993.6 995.8 1004.8 1007.4 1006.0 1016.5 993.6 DAY-HOUR 8- 0 29-18 2-12 27-15 31-12 30- 9 5-12 11-12 1- 0 8-12 20- 0 30- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 868.5 867.5 863.5 864.8 866.6 863.5 862.6 862.7 867.7 870.2 870.3 871.1 866.6 MAX. QFE PRESSURE IN HPA 874.0 873.2 870.1 877.0 872.0 868.0 868.5 867.0 870.8 875.0 875.4 878.0 878.0 DAY 19 15 20 8 6 7 17 15 16 31 26 15 MIN. QFE PRESSURE IN HPA 862.2 862.6 855.6 859.3 859.8 856.9 857.2 858.5 864.5 864.2 858.7 863.4 855.6 DAY 8 22 3 11 31 21 1 12 1 11 20 30 MEAN QNH PRESSURE IN HPA 1020.6 1019.5 1015.0 1016.5 1018.5 1015.0 1014.0 1014.1 1019.8 1022.6 1022.8 1023.6 1018.5 MAX. QNH PRESSURE IN HPA 1027.0 1026.0 1022.5 1030.4 1024.7 1020.1 1020.7 1019.0 1023.3 1028.1 1028.6 1031.5 1031.5 DAY 19 15 20 8 6 7 17 15 16 31 26 15 MIN. QNH PRESSURE IN HPA 1013.5 1014.0 1006.0 1010.2 1010.8 1007.5 1007.8 1009.3 1016.1 1015.8 1009.5 1014.9 1006.0 DAY 8 22 3 11 31 21 1 12 1 11 20 30 MEAN QFF PRESSURE IN HPA 1022.0 1018.7 1015.0 1012.9 1011.2 1004.5 1003.0 1002.7 1011.1 1016.9 1021.8 1024.9 1013.7 MAX. QFF PRESSURE IN HPA 1028.0 1027.2 1027.5 1030.5 1020.6 1012.3 1009.2 1009.7 1014.7 1023.3 1030.7 1033.9 1033.9 DAY 19 15 20 8 6 7 17 15 12 31 26 15 MIN. QFF PRESSURE IN HPA 1014.1 1010.5 1001.1 1004.8 1002.0 995.8 996.1 997.3 1004.8 1009.1 1006.0 1016.5 995.8 DAY 8 29 1 28 13 21 6 12 1 11 20 30 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 868.6 867.8 863.6 865.3 867.4 864.3 863.3 863.5 868.2 870.5 870.7 871.1 867.0 MAX. QFE PRESSURE IN HPA 874.0 873.4 870.3 877.6 872.6 868.8 869.0 867.2 870.9 875.6 876.3 878.0 878.0 DAY 19 15 20 8 26 7 17 15 6 28 26 6 MIN. QFE PRESSURE IN HPA 863.0 862.2 855.9 859.2 859.8 857.6 858.9 859.3 865.1 865.0 858.5 863.1 855.9 DAY 8 10 24 11 31 21 2 12 1 11 20 30 MEAN QNH PRESSURE IN HPA 1020.8 1019.9 1015.1 1017.0 1019.5 1015.9 1014.8 1015.0 1020.3 1023.0 1023.2 1023.7 1019.0 MAX. QNH PRESSURE IN HPA 1027.0 1026.3 1022.7 1031.1 1025.4 1021.0 1021.3 1019.2 1023.4 1028.8 1029.6 1031.5 1031.5 DAY 19 15 20 8 26 7 17 15 6 28 26 6 MIN. QNH PRESSURE IN HPA 1014.4 1013.5 1006.3 1010.1 1010.8 1008.3 1009.7 1010.2 1016.8 1016.7 1009.3 1014.5 1006.3 DAY 8 10 24 11 31 21 2 12 1 11 20 30 MEAN QFF PRESSURE IN HPA 1023.7 1020.5 1016.4 1014.3 1012.8 1006.1 1004.7 1004.8 1013.1 1018.9 1023.6 1026.5 1015.4 MAX. QFF PRESSURE IN HPA 1029.1 1029.0 1029.9 1033.2 1020.8 1014.0 1010.8 1011.0 1016.7 1026.1 1033.1 1035.6 1035.6 DAY 19 15 20 8 6 7 17 15 12 31 26 6 MIN. QFF PRESSURE IN HPA 1016.2 1011.2 1004.3 1005.9 1001.9 998.0 998.2 998.7 1006.3 1011.5 1006.9 1017.4 998.0 DAY 8 29 2 28 31 21 5 12 1 8 20 30 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1960 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 869.5 869.3 864.6 866.0 867.5 864.6 863.1 863.9 868.7 871.6 871.4 872.5 867.7 MAX. QFE PRESSURE IN HPA 875.4 883.4 871.3 878.2 873.3 869.5 869.1 868.0 871.5 876.7 877.8 880.2 883.4 DAY 19 22 20 8 26 7 17 14 6 31 26 3 MIN. QFE PRESSURE IN HPA 863.8 862.4 855.1 859.4 860.5 858.0 855.7 860.5 863.9 865.9 859.3 864.5 855.1 DAY 8 29 24 11 31 21 28 12 18 8 20 30 MEAN QNH PRESSURE IN HPA 1021.8 1021.6 1016.2 1017.9 1019.6 1016.2 1014.6 1015.5 1020.9 1024.2 1024.0 1025.2 1019.8 MAX. QNH PRESSURE IN HPA 1028.6 1037.7 1023.9 1031.7 1026.2 1021.8 1021.4 1020.1 1024.1 1030.0 1031.3 1034.0 1037.7 DAY 19 22 20 8 26 7 17 14 6 31 26 3 MIN. QNH PRESSURE IN HPA 1015.3 1013.7 1005.4 1010.3 1011.6 1008.7 1006.1 1011.6 1015.4 1017.7 1010.2 1016.1 1005.4 DAY 8 29 24 11 31 21 28 12 18 8 20 30 MEAN QFF PRESSURE IN HPA 1024.3 1021.4 1016.7 1014.4 1012.1 1005.8 1003.7 1004.3 1012.3 1018.5 1023.2 1027.3 1015.3 MAX. QFF PRESSURE IN HPA 1030.2 1035.3 1029.7 1032.9 1020.7 1014.2 1010.5 1008.8 1017.2 1025.4 1033.3 1035.9 1035.9 DAY 19 22 20 8 5 7 17 14 21 31 26 3 MIN. QFF PRESSURE IN HPA 1016.9 1010.4 1003.6 1006.9 1001.6 998.1 994.8 999.1 1005.8 1010.9 1008.4 1018.9 994.8 DAY 8 29 24 19 31 21 28 12 18 8 20 30 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 868.4 867.5 863.8 865.3 866.6 863.7 862.5 863.1 867.7 871.0 870.4 870.9 866.7 MAX. QFE PRESSURE IN HPA 874.1 873.6 870.1 877.6 872.8 868.7 868.1 869.6 870.4 890.4 876.7 877.3 890.4 DAY 19 15 20 7 5 7 17 27 25 6 26 6 MIN. QFE PRESSURE IN HPA 864.9 861.0 854.6 859.5 859.4 857.5 857.8 859.0 864.2 864.1 859.7 864.0 854.6 DAY 8 29 24 11 31 30 2 11 4 8 20 30 MEAN QNH PRESSURE IN HPA 1020.6 1019.6 1015.3 1017.0 1018.6 1015.2 1013.8 1014.5 1019.8 1023.5 1022.9 1023.5 1018.7 MAX. QNH PRESSURE IN HPA 1027.1 1026.5 1022.5 1031.1 1025.6 1020.9 1020.2 1021.9 1022.8 1045.6 1030.0 1030.7 1045.6 DAY 19 15 20 7 5 7 17 27 25 6 26 6 MIN. QNH PRESSURE IN HPA 1016.6 1012.1 1004.8 1010.4 1010.3 1008.1 1008.5 1009.9 1015.8 1015.7 1010.7 1015.6 1004.8 DAY 8 29 24 11 31 30 2 11 4 8 20 30 MEAN QFF PRESSURE IN HPA 1021.4 1018.3 1015.6 1013.2 1010.5 1004.6 1002.8 1002.8 1011.1 1017.5 1021.6 1024.1 1013.6 MAX. QFF PRESSURE IN HPA 1027.4 1027.5 1027.5 1030.1 1021.6 1012.8 1009.1 1011.4 1015.6 1038.4 1031.4 1032.1 1038.4 DAY 29 15 20 7 5 7 17 27 21 6 26 6 MIN. QFF PRESSURE IN HPA 1015.7 1008.4 1002.7 1006.0 999.0 995.3 995.3 997.3 1006.4 1008.3 1009.1 1017.9 995.3 DAY 24 29 24 27 31 30 5 11 4 8 20 30 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 867.5 866.8 862.7 864.2 865.5 862.6 861.4 861.5 866.5 869.4 869.7 870.4 865.7 MAX. QFE PRESSURE IN HPA 873.1 872.6 868.9 876.6 872.1 867.7 866.3 867.0 869.4 873.5 875.7 883.3 883.3 DAY 19 15 20 7 5 7 29 14 11 31 26 8 MIN. QFE PRESSURE IN HPA 863.2 860.1 853.1 859.2 858.1 856.7 856.3 857.8 863.0 863.3 860.3 863.8 853.1 DAY 7 22 2 19 31 30 2 11 4 8 19 30 MEAN QNH PRESSURE IN HPA 1019.6 1018.7 1014.1 1015.8 1017.2 1013.9 1012.6 1012.7 1018.3 1021.7 1022.1 1022.9 1017.5 MAX. QNH PRESSURE IN HPA 1025.9 1025.4 1021.1 1029.9 1024.8 1019.8 1018.2 1019.0 1021.7 1026.4 1028.9 1037.6 1037.6 DAY 19 15 20 7 5 7 29 14 11 31 26 8 MIN. QNH PRESSURE IN HPA 1014.6 1011.1 1003.1 1010.1 1008.8 1007.2 1006.8 1008.5 1014.4 1014.8 1011.3 1015.3 1003.1 DAY 7 22 2 19 31 30 2 11 4 8 19 30 MEAN QFF PRESSURE IN HPA 1020.9 1017.8 1014.1 1012.3 1009.7 1003.4 1001.5 1001.2 1009.7 1016.0 1021.1 1024.1 1012.6 MAX. QFF PRESSURE IN HPA 1026.6 1026.3 1025.4 1029.6 1020.9 1012.5 1007.7 1008.8 1013.2 1021.8 1031.1 1037.7 1037.7 DAY 19 15 20 7 5 7 29 14 11 30 26 8 MIN. QFF PRESSURE IN HPA 1015.5 1007.7 999.7 1004.4 998.5 996.1 993.6 995.8 1004.9 1007.4 1008.2 1017.2 993.6 DAY 8 22 2 28 31 30 5 11 4 8 19 30 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1960 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 868.1 866.8 863.2 864.5 865.3 862.4 861.5 861.4 866.8 869.9 870.2 870.8 865.9 MAX. QFE PRESSURE IN HPA 873.3 873.2 869.0 877.4 872.0 867.8 866.5 867.4 870.3 876.8 876.3 877.0 877.4 DAY 18 15 19 7 5 7 29 14 6 28 26 6 MIN. QFE PRESSURE IN HPA 863.5 857.7 852.9 859.7 858.4 856.4 856.1 857.8 862.3 864.1 860.2 864.0 852.9 DAY 7 29 2 19 31 30 5 27 4 8 19 29 MEAN QNH PRESSURE IN HPA 1020.3 1018.7 1014.6 1016.1 1017.1 1013.8 1012.7 1012.6 1018.8 1022.3 1022.6 1023.3 1017.7 MAX. QNH PRESSURE IN HPA 1026.2 1026.0 1021.3 1030.8 1024.7 1019.9 1018.4 1019.4 1022.7 1030.1 1029.6 1030.4 1030.8 DAY 18 15 19 7 5 7 29 14 6 28 26 6 MIN. QNH PRESSURE IN HPA 1015.0 1008.4 1002.9 1010.7 1009.2 1006.9 1006.5 1008.5 1013.6 1015.7 1011.2 1015.6 1002.9 DAY 7 29 2 19 31 30 5 27 4 8 19 29 MEAN QFF PRESSURE IN HPA 1023.2 1019.2 1015.9 1013.3 1010.1 1004.0 1002.6 1002.2 1011.6 1018.1 1023.0 1026.1 1014.1 MAX. QFF PRESSURE IN HPA 1028.2 1028.7 1027.2 1032.9 1021.7 1013.2 1010.0 1010.8 1015.3 1027.5 1033.2 1034.2 1034.2 DAY 19 15 19 7 5 7 23 14 6 28 26 5 MIN. QFF PRESSURE IN HPA 1017.7 1005.5 1000.2 1004.3 1000.0 995.8 994.2 997.5 1005.3 1009.4 1008.9 1018.9 994.2 DAY 7 29 2 27 31 30 5 11 4 8 19 30 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 868.5 867.5 864.6 865.7 866.6 863.5 862.6 862.7 867.8 870.5 870.7 871.2 866.8 MAX. QFE PRESSURE IN HPA 873.6 873.8 869.9 878.2 873.6 868.5 867.7 868.1 870.9 874.4 876.5 877.9 878.2 DAY 18 15 19 7 5 7 16 14 11 30 26 5 MIN. QFE PRESSURE IN HPA 863.4 857.5 853.5 860.4 859.0 857.6 857.0 858.8 864.2 864.8 860.5 863.8 853.5 DAY 7 29 2 19 31 30 4 11 28 8 19 29 MEAN QNH PRESSURE IN HPA 1020.7 1019.6 1016.2 1017.4 1018.5 1015.0 1014.0 1014.0 1019.9 1023.0 1023.1 1023.8 1018.8 MAX. QNH PRESSURE IN HPA 1026.5 1026.7 1022.3 1031.7 1026.5 1020.7 1019.8 1020.2 1023.4 1027.4 1029.8 1031.4 1031.7 DAY 18 15 19 7 5 7 16 14 11 30 26 5 MIN. QNH PRESSURE IN HPA 1014.9 1008.1 1003.6 1011.4 1009.9 1008.3 1007.6 1009.6 1015.8 1016.5 1011.6 1015.3 1003.6 DAY 7 29 2 19 31 30 4 11 28 8 19 29 MEAN QFF PRESSURE IN HPA 1023.2 1019.2 1016.8 1013.9 1010.9 1004.6 1003.1 1002.8 1011.4 1017.3 1022.4 1025.9 1014.3 MAX. QFF PRESSURE IN HPA 1028.5 1028.6 1027.1 1031.3 1022.1 1013.6 1008.6 1010.0 1015.4 1022.3 1031.9 1035.2 1035.2 DAY 19 15 19 7 5 7 29 14 11 30 26 5 MIN. QFF PRESSURE IN HPA 1017.3 1003.3 1000.7 1005.5 999.7 996.3 995.6 997.3 1006.8 1008.8 1008.5 1018.5 995.6 DAY 7 29 2 27 31 30 4 11 1 8 19 29 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 868.5 867.8 864.1 865.4 866.9 863.8 862.8 862.8 867.8 870.4 870.5 871.6 866.9 MAX. QFE PRESSURE IN HPA 873.8 873.4 869.5 879.8 873.2 868.5 868.2 867.9 870.7 874.8 876.3 886.9 886.9 DAY 18 15 19 7 5 7 16 14 11 30 26 6 MIN. QFE PRESSURE IN HPA 862.7 863.0 854.2 860.0 860.0 857.4 857.8 858.8 864.6 864.6 859.5 863.8 854.2 DAY 7 21 2 19 30 20 2 11 28 10 19 29 MEAN QNH PRESSURE IN HPA 1020.6 1019.9 1015.7 1017.1 1018.9 1015.3 1014.2 1014.1 1019.9 1022.9 1023.0 1024.3 1018.8 MAX. QNH PRESSURE IN HPA 1026.7 1026.3 1021.8 1033.6 1026.0 1020.7 1020.3 1020.0 1023.2 1027.9 1029.6 1041.7 1041.7 DAY 18 15 19 7 5 7 16 14 11 30 26 6 MIN. QNH PRESSURE IN HPA 1014.1 1014.4 1004.4 1011.0 1011.0 1008.0 1008.5 1009.6 1016.2 1016.2 1010.4 1015.3 1004.4 DAY 7 21 2 19 30 20 2 11 28 10 19 29 MEAN QFF PRESSURE IN HPA 1021.6 1018.7 1015.8 1013.2 1011.0 1004.6 1003.0 1002.5 1011.0 1016.8 1021.6 1024.9 1013.7 MAX. QFF PRESSURE IN HPA 1026.6 1027.2 1025.6 1033.6 1022.4 1012.6 1008.7 1010.1 1014.8 1022.3 1030.9 1042.9 1042.9 DAY 28 14 19 7 5 7 16 14 11 30 26 6 MIN. QFF PRESSURE IN HPA 1015.5 1010.7 1001.4 1005.1 999.8 995.6 996.2 997.2 1006.5 1009.3 1006.8 1016.9 995.6 DAY 7 28 2 27 30 20 2 11 4 8 19 29 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1961 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 0.5 2.7 7.3 13.3 21.6 24.8 27.1 23.9 21.2 13.4 7.7 4.8 14.0 MINIMUN AIR TEMPERATURE (C) -2.5 -2.0 1.8 7.8 15.1 18.1 21.2 18.2 15.5 7.5 2.4 0.5 8.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 8 19 2 0 0 0 0 29 DAYS WITH MINIMUM TEMP. <=-4 11 9 1 0 0 0 0 0 0 0 0 0 21 DAYS WITH FREEZING MIN.<= 0 29 21 13 1 0 0 0 0 0 2 7 15 88 TEMPERATURE RECORDS LOWEST(C) -8.0 -8.0 -5.0 -1.0 9.0 9.0 17.0 15.0 12.0 0.0 -3.0 -3.0 -8.0 DAY 10 1 4 18 2 8 17 2 20 28 27 29 MAXIMUM AIR TEMPERATURE (C) 6.0 9.8 14.5 20.1 29.4 32.2 34.0 31.4 29.0 22.2 15.8 12.6 21.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 1 15 27 29 26 11 0 0 0 109 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 11.0 15.0 24.0 30.0 34.0 37.0 39.0 35.0 34.0 28.0 22.0 17.0 39.0 DAY 19 12 26 28 8 5 28 19 12 1 6 6 DIF. BETWEEN (MAX.-MIN.) (C) 8.5 11.8 12.7 12.3 14.3 14.1 12.8 13.2 13.5 14.7 13.4 12.1 12.8 MEAN DAILY TEMP. (MDT) (C) 1.7 3.9 8.2 13.9 22.2 25.2 27.6 24.8 22.3 14.9 9.1 6.6 15.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 2.5 53.5 137.5 204.0 117.0 44.0 0.0 0.0 0.0 558.5 HEATING DEG. DAYS(BASE 18 0C) 504.0 395.0 304.5 142.5 2.5 3.0 0.0 0.0 0.0 103.0 267.0 354.5 2076.0 DEWPOINT (MEAN C) -3.8 -4.3 -3.8 0.7 5.0 7.1 10.0 8.6 8.8 3.1 -0.2 -2.5 2.4 MIXING RATIO (G/KG) 3.43 3.25 3.50 4.83 6.45 7.47 9.19 8.25 8.36 5.70 4.53 3.73 5.72 VAPOUR PRESSURE (HPA) 4.76 4.51 4.83 6.66 8.88 10.25 12.54 11.31 11.46 7.90 6.28 5.17 7.88 SATURATION DEF. (HPA) 1.76 3.28 6.08 9.77 18.10 22.48 24.49 19.41 14.70 8.55 4.89 3.78 11.44 RELATIVE HUMIDITY (MEAN %) 74 63 49 46 37 35 37 40 48 53 60 61 50 RELATIVE HUMIDITY (MAX. %) 85 81 72 65 53 50 51 55 65 71 78 76 67 RELATIVE HUMIDITY (MIN. %) 57 41 28 29 22 21 24 25 31 32 40 40 33 RELATIVE HUMIDITY (MEAN% 03UTC) 82 78 67 61 47 44 46 50 60 66 74 74 62 RELATIVE HUMIDITY (MEAN% 09UTC) 63 46 33 32 25 22 26 26 32 33 42 42 35 RELATIVE HUMIDITY (MEAN% 15UTC) 72 58 42 38 31 30 32 37 45 53 58 60 46 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 25.7 5.9 14.4 11.9 3.8 2.0 0.2 0.2 0.1 0.0 3.1 5.6 72.9 DAYS WITH PRECIPITATION >=10 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH PRECIPITATION >= 5 3 0 1 1 0 0 0 0 0 0 0 1 6 DAYS WITH PRECIPITATION >= 1 6 2 4 2 1 1 0 0 0 0 1 1 18 DAYS WITH PRECIPITATION 12 6 9 7 10 4 2 5 1 1 4 4 65 GREATEST DAILY PRECIPITATION 8.0 3.0 7.0 8.0 3.2 2.0 0.2 0.1 0.1 0.0 2.0 5.6 8.0 DAY 27 28 13 15 1 13 17 3 20 ** 24 14 DAY WITH THUNDER STORM 0 0 1 2 5 1 1 0 1 0 0 1 12 DAYS WITH SNOW OR SLEET 8 3 2 0 0 0 0 0 0 0 0 0 13 DAYS WITH DUST 0 0 1 2 0 0 1 2 0 0 0 0 6 WIND DIRECTION (PREVAILING) 45 45 45 45 45 45 45 45 45 45 45 225 45 PREVAILING WIND SPEED(KNOTS) 5.9 5.6 5.7 7.2 6.0 6.1 6.2 6.7 6.6 5.1 5.2 5.3 6.0 PREVAILING WIND PERCENT 25.5 25.1 21.9 31.0 38.1 31.8 45.7 48.2 41.8 34.8 27.2 25.1 32.7 CALMS PERCENT OF WIND 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NO. OF WIND OBSERVATION 247 223 247 239 247 239 247 247 239 247 239 247 2908 VECTOR WIND DIRECTION (MEAN) 95 97 172 55 61 44 53 49 54 56 87 90 60 VECTOR WIND MAGNITUDE(KNOTS) 1.4 1.1 0.7 2.3 2.9 2.7 4.3 4.5 4.5 2.9 1.6 0.5 2.3 WIND STEADINESES (MEAN %) 23.0 18.3 10.4 34.3 49.2 44.3 76.8 72.6 71.4 53.7 29.1 9.6 38.3 WIND SPEED (MEAN KNOTS) 6.1 6.0 6.7 6.7 5.9 6.1 5.6 6.2 6.3 5.4 5.5 5.2 6.0 FASTEST WIND DIRECTION 230 180 270 50 310 330 50 50 50 50 90 310 50 FASTEST WIND SPEED (KNOTS) 13 15 18 22 18 20 18 18 15 18 15 18 22 DAY 22 24 3 2 24 6 4 20 7 7 24 25 DAYS WITH SKY CLEAR (0-2)/8 7 13 12 6 15 25 21 25 28 28 16 11 207 DAYS WITH P.CLOUDY (3-6)/8 10 12 14 10 12 4 10 6 1 3 11 18 111 DAYS WITH CLOUDY (7-8)/8 14 3 5 14 4 1 0 0 1 0 3 2 47 DAYS WITH VISIBILITY =< 2 KM 3 1 0 0 0 1 0 0 0 0 0 0 5 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1961 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 868.7 867.1 864.3 865.3 864.9 864.4 861.9 864.9 864.6 870.8 869.0 867.3 866.1 MAX. QFE PRESSURE IN HPA 876.9 877.3 878.0 871.1 872.6 869.2 868.4 870.5 871.2 878.0 876.6 877.0 878.0 DAY-HOUR 10- 6 22- 6 4- 6 17-18 14-18 23-21 24- 6 9-21 25- 6 25- 6 1- 6 3- 6 MIN. QFE PRESSURE IN HPA 859.2 859.7 853.7 857.9 853.6 853.5 854.9 859.3 859.0 864.4 859.6 855.4 853.5 DAY-HOUR 22-12 25-12 9- 9 1-12 28-12 6-12 11-15 7-15 21-15 1-12 23-12 22-12 MEAN QNH PRESSURE IN HPA 1021.0 1019.1 1015.9 1017.0 1016.6 1016.0 1013.2 1016.6 1016.3 1023.3 1021.2 1019.4 1017.9 MAX. QNH PRESSURE IN HPA 1030.3 1030.7 1031.5 1023.6 1025.4 1021.5 1020.6 1023.0 1023.8 1031.5 1029.9 1030.4 1031.5 DAY-HOUR 10- 6 22- 6 4- 6 17-18 14-18 23-21 24- 6 9-21 25- 6 25- 6 1- 6 3- 6 MIN. QNH PRESSURE IN HPA 1010.1 1010.7 1003.8 1008.6 1003.7 1003.6 1005.2 1010.2 1009.9 1016.0 1010.5 1005.7 1003.6 DAY-HOUR 22-12 25-12 9- 9 1-12 28-12 6-12 11-15 7-15 21-15 1-12 23-12 22-12 MEAN QFF PRESSURE IN HPA 1024.4 1021.3 1015.2 1013.0 1007.8 1005.5 1001.3 1006.5 1007.5 1019.1 1020.3 1020.2 1013.5 MAX. QFF PRESSURE IN HPA 1037.6 1034.5 1034.8 1024.3 1019.1 1014.5 1008.4 1014.5 1016.6 1031.7 1030.6 1031.5 1037.6 DAY-HOUR 10- 6 22- 6 4- 6 17-18 1-18 8-18 24- 6 9-21 25- 3 28- 3 29- 3 3- 6 MIN. QFF PRESSURE IN HPA 1009.2 1009.3 1001.6 1001.2 992.6 992.8 992.3 998.9 999.6 1007.4 1006.8 1006.1 992.3 DAY-HOUR 22-12 14- 9 9- 9 29-12 28-12 6-12 11-15 7-12 1-12 1-12 23-21 22-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 868.7 866.9 864.2 865.3 864.9 864.4 862.0 865.0 864.7 870.6 869.1 867.3 866.1 MAX. QFE PRESSURE IN HPA 876.5 875.6 875.4 870.0 872.0 868.6 866.4 870.0 870.0 876.3 875.2 875.6 876.5 DAY 10 22 4 4 15 24 25 10 25 25 1 4 MIN. QFE PRESSURE IN HPA 860.1 859.9 855.4 859.8 856.7 855.7 857.4 860.4 860.3 865.8 860.9 856.8 855.4 DAY 22 25 9 14 30 6 12 7 22 17 24 23 MEAN QNH PRESSURE IN HPA 1021.0 1018.9 1015.7 1017.1 1016.6 1016.0 1013.3 1016.7 1016.4 1023.1 1021.3 1019.3 1017.9 MAX. QNH PRESSURE IN HPA 1029.8 1028.8 1028.6 1022.4 1024.7 1020.8 1018.3 1022.4 1022.4 1029.6 1028.3 1028.8 1029.8 DAY 10 22 4 4 15 24 25 10 25 25 1 4 MIN. QNH PRESSURE IN HPA 1011.1 1010.9 1005.7 1010.8 1007.2 1006.1 1008.0 1011.4 1011.3 1017.6 1012.0 1007.3 1005.7 DAY 22 25 9 14 30 6 12 7 22 17 24 23 MEAN QFF PRESSURE IN HPA 1024.0 1020.7 1014.8 1012.8 1007.8 1005.7 1001.3 1006.3 1007.2 1018.5 1020.2 1019.7 1013.2 MAX. QFF PRESSURE IN HPA 1035.4 1032.4 1031.7 1022.7 1017.8 1014.3 1005.7 1013.9 1014.2 1028.8 1028.1 1028.6 1035.4 DAY 10 22 4 18 2 9 24 10 25 28 29 4 MIN. QFF PRESSURE IN HPA 1010.4 1009.7 1003.5 1002.4 996.4 993.5 994.9 1000.0 1001.7 1009.2 1009.0 1008.2 993.5 DAY 22 14 9 29 28 6 12 7 11 1 24 23 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 868.9 867.3 864.7 865.7 865.7 865.1 862.8 865.4 865.4 871.0 869.2 867.5 866.6 MAX. QFE PRESSURE IN HPA 876.5 876.4 876.5 870.2 872.1 868.8 867.0 869.7 870.7 877.0 875.5 875.8 877.0 DAY 10 22 4 4 14 23 24 10 25 28 1 3 MIN. QFE PRESSURE IN HPA 860.1 859.9 854.2 860.6 856.7 856.4 859.0 861.0 860.9 865.9 860.9 858.1 854.2 DAY 22 25 9 1 30 6 12 7 22 17 24 22 MEAN QNH PRESSURE IN HPA 1021.1 1019.3 1016.3 1017.4 1017.5 1016.8 1014.2 1017.2 1017.1 1023.6 1021.5 1019.6 1018.5 MAX. QNH PRESSURE IN HPA 1029.8 1029.7 1029.8 1022.6 1024.8 1021.0 1019.0 1022.1 1023.2 1030.4 1028.7 1029.0 1030.4 DAY 10 22 4 4 14 23 24 10 25 28 1 3 MIN. QNH PRESSURE IN HPA 1011.1 1010.9 1004.4 1011.7 1007.2 1006.9 1009.9 1012.1 1012.0 1017.7 1012.0 1008.8 1004.4 DAY 22 25 9 1 30 6 12 7 22 17 24 22 MEAN QFF PRESSURE IN HPA 1025.2 1022.5 1016.6 1014.1 1009.2 1006.8 1002.8 1007.9 1009.3 1020.7 1021.9 1021.3 1014.9 MAX. QFF PRESSURE IN HPA 1037.1 1034.3 1034.8 1023.8 1018.1 1014.5 1007.0 1014.5 1016.6 1031.7 1030.6 1031.1 1037.1 DAY 10 22 4 18 2 9 24 10 25 28 29 3 MIN. QFF PRESSURE IN HPA 1010.8 1010.5 1003.7 1003.7 997.5 994.9 997.4 1001.4 1003.5 1011.4 1010.6 1010.2 994.9 DAY 22 14 9 29 28 6 12 7 11 1 24 22 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1961 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 869.7 868.1 865.4 866.2 866.0 865.3 862.9 865.8 865.8 871.9 870.0 868.5 867.1 MAX. QFE PRESSURE IN HPA 876.9 877.3 878.0 870.9 872.5 869.1 868.4 869.7 871.2 878.0 876.6 877.0 878.0 DAY 10 22 4 21 14 11 24 26 25 25 1 3 MIN. QFE PRESSURE IN HPA 860.8 860.3 854.3 861.3 856.9 856.6 858.8 862.0 861.6 866.3 862.0 858.3 854.3 DAY 22 25 9 1 30 6 11 7 11 17 23 22 MEAN QNH PRESSURE IN HPA 1022.1 1020.2 1017.1 1018.1 1017.8 1017.0 1014.3 1017.6 1017.6 1024.6 1022.4 1020.6 1019.1 MAX. QNH PRESSURE IN HPA 1030.3 1030.7 1031.5 1023.4 1025.2 1021.4 1020.6 1022.1 1023.8 1031.5 1029.9 1030.4 1031.5 DAY 10 22 4 21 14 11 24 26 25 25 1 3 MIN. QNH PRESSURE IN HPA 1011.9 1011.3 1004.5 1012.5 1007.5 1007.1 1009.6 1013.3 1012.8 1018.2 1013.3 1009.1 1004.5 DAY 22 25 9 1 30 6 11 7 11 17 23 22 MEAN QFF PRESSURE IN HPA 1025.9 1022.7 1016.4 1013.9 1009.1 1006.5 1002.5 1007.5 1008.8 1020.2 1021.3 1022.0 1014.7 MAX. QFF PRESSURE IN HPA 1037.6 1034.5 1034.8 1023.2 1017.2 1014.5 1008.4 1013.2 1016.2 1030.4 1029.9 1031.5 1037.6 DAY 10 22 4 17 2 9 24 10 25 25 29 3 MIN. QFF PRESSURE IN HPA 1011.6 1010.5 1003.2 1005.0 997.7 995.9 996.8 1001.6 1002.6 1011.6 1010.1 1009.9 995.9 DAY 22 14 9 30 28 6 12 7 1 17 23 14 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 868.6 867.2 864.6 865.4 865.0 864.3 862.0 864.8 864.7 870.7 868.8 867.3 866.1 MAX. QFE PRESSURE IN HPA 875.9 876.0 876.7 870.3 872.2 868.5 867.2 869.0 869.7 876.5 875.2 875.5 876.7 DAY 10 22 4 17 14 23 24 26 25 25 1 3 MIN. QFE PRESSURE IN HPA 859.8 859.8 853.7 859.7 855.6 855.0 857.7 860.3 860.4 865.4 861.0 856.3 853.7 DAY 22 25 9 1 30 6 11 7 21 17 23 22 MEAN QNH PRESSURE IN HPA 1020.8 1019.2 1016.2 1017.1 1016.7 1015.9 1013.3 1016.4 1016.3 1023.2 1021.0 1019.3 1018.0 MAX. QNH PRESSURE IN HPA 1029.1 1029.2 1030.0 1022.7 1024.9 1020.7 1019.2 1021.3 1022.1 1029.8 1028.3 1028.7 1030.0 DAY 10 22 4 17 14 23 24 26 25 25 1 3 MIN. QNH PRESSURE IN HPA 1010.8 1010.8 1003.8 1010.7 1006.0 1005.3 1008.4 1011.3 1011.4 1017.1 1012.1 1006.8 1003.8 DAY 22 25 9 1 30 6 11 7 21 17 23 22 MEAN QFF PRESSURE IN HPA 1023.5 1020.6 1014.8 1012.8 1007.3 1005.2 1001.2 1006.0 1007.2 1018.6 1018.9 1018.9 1012.9 MAX. QFF PRESSURE IN HPA 1034.6 1032.2 1033.0 1022.5 1015.6 1013.8 1006.4 1011.7 1013.6 1028.7 1027.5 1028.2 1034.6 DAY 10 22 4 17 11 9 24 10 25 28 29 3 MIN. QFF PRESSURE IN HPA 1009.5 1009.3 1001.6 1003.0 994.5 994.2 995.2 999.3 1001.2 1010.6 1008.1 1006.6 994.2 DAY 22 14 9 29 28 6 11 7 11 3 23 22 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 868.0 866.2 863.2 864.2 863.7 863.4 860.9 863.7 863.4 869.8 868.0 866.4 865.1 MAX. QFE PRESSURE IN HPA 875.2 874.5 875.1 869.4 870.7 868.3 866.1 867.6 868.0 875.4 874.7 874.8 875.4 DAY 10 22 4 20 14 23 24 9 25 25 1 3 MIN. QFE PRESSURE IN HPA 859.2 859.7 853.9 857.9 853.6 853.5 855.7 859.5 859.2 864.4 859.6 855.4 853.5 DAY 22 25 9 1 28 6 11 7 21 1 23 22 MEAN QNH PRESSURE IN HPA 1020.1 1018.0 1014.6 1015.8 1015.3 1014.8 1012.0 1015.2 1014.9 1022.2 1020.1 1018.3 1016.8 MAX. QNH PRESSURE IN HPA 1028.3 1027.5 1028.2 1021.7 1023.2 1020.5 1017.9 1019.7 1020.1 1028.6 1027.8 1027.9 1028.6 DAY 10 22 4 20 14 23 24 9 25 25 1 3 MIN. QNH PRESSURE IN HPA 1010.1 1010.7 1004.0 1008.6 1003.7 1003.6 1006.1 1010.4 1010.1 1016.0 1010.5 1005.7 1003.6 DAY 22 25 9 1 28 6 11 7 21 1 23 22 MEAN QFF PRESSURE IN HPA 1023.1 1019.7 1013.5 1011.5 1006.5 1004.4 1000.0 1004.8 1005.7 1017.6 1018.9 1018.6 1012.0 MAX. QFF PRESSURE IN HPA 1034.1 1030.8 1031.4 1021.1 1014.9 1012.7 1005.6 1011.1 1011.9 1027.6 1026.7 1027.7 1034.1 DAY 10 22 4 17 1 9 24 9 7 28 29 3 MIN. QFF PRESSURE IN HPA 1009.2 1010.1 1002.3 1001.2 992.6 992.8 992.9 998.9 999.6 1007.4 1007.5 1006.1 992.6 DAY 22 25 9 29 28 6 11 7 1 1 23 22 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1961 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 868.5 866.8 863.5 864.4 863.8 863.3 860.8 863.9 863.6 870.3 868.6 867.0 865.4 MAX. QFE PRESSURE IN HPA 875.5 874.2 874.4 869.3 870.9 868.4 865.4 867.7 868.7 876.4 874.2 875.2 876.4 DAY 10 22 4 17 14 23 24 9 24 27 1 3 MIN. QFE PRESSURE IN HPA 860.7 862.3 855.0 858.5 854.6 854.2 854.9 859.3 859.0 864.5 860.2 855.9 854.2 DAY 22 17 9 13 30 6 11 7 21 21 23 22 MEAN QNH PRESSURE IN HPA 1020.7 1018.7 1015.0 1016.0 1015.4 1014.8 1011.9 1015.5 1015.1 1022.7 1020.8 1019.0 1017.1 MAX. QNH PRESSURE IN HPA 1028.7 1027.2 1027.4 1021.6 1023.4 1020.6 1017.1 1019.8 1020.9 1029.7 1027.2 1028.3 1029.7 DAY 10 22 4 17 14 23 24 9 24 27 1 3 MIN. QNH PRESSURE IN HPA 1011.8 1013.6 1005.3 1009.3 1004.8 1004.4 1005.2 1010.2 1009.9 1016.1 1011.2 1006.3 1004.4 DAY 22 17 9 13 30 6 11 7 21 21 23 22 MEAN QFF PRESSURE IN HPA 1024.8 1021.7 1015.2 1012.6 1007.1 1004.8 1000.5 1006.1 1007.3 1019.8 1021.3 1020.6 1013.5 MAX. QFF PRESSURE IN HPA 1036.1 1031.7 1031.8 1022.7 1016.7 1012.4 1005.2 1012.2 1014.3 1030.9 1028.7 1029.7 1036.1 DAY 10 22 4 17 1 8 24 9 24 27 29 3 MIN. QFF PRESSURE IN HPA 1012.5 1014.8 1005.1 1003.0 996.7 994.6 992.3 999.6 1000.9 1009.5 1009.1 1007.4 992.3 DAY 22 14 30 29 28 5 11 7 10 1 23 22 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 868.9 867.4 864.4 865.7 865.0 864.5 861.9 865.2 864.7 871.1 869.1 867.5 866.3 MAX. QFE PRESSURE IN HPA 875.9 875.2 874.2 871.1 872.6 868.9 867.0 869.6 869.8 876.7 874.5 876.1 876.7 DAY 10 21 4 17 14 23 24 9 24 27 1 3 MIN. QFE PRESSURE IN HPA 861.6 862.0 856.4 859.5 856.8 856.7 855.8 861.0 860.5 865.5 860.3 856.0 855.8 DAY 21 13 9 13 28 5 11 7 10 1 23 22 MEAN QNH PRESSURE IN HPA 1021.1 1019.4 1016.1 1017.4 1016.7 1016.1 1013.2 1016.9 1016.3 1023.6 1021.4 1019.6 1018.1 MAX. QNH PRESSURE IN HPA 1029.1 1028.3 1027.2 1023.6 1025.4 1021.1 1019.0 1021.9 1022.2 1030.0 1027.5 1029.3 1030.0 DAY 10 21 4 17 14 23 24 9 24 27 1 3 MIN. QNH PRESSURE IN HPA 1012.8 1013.3 1006.9 1010.4 1007.3 1007.2 1006.2 1012.1 1011.6 1017.3 1011.3 1006.4 1006.2 DAY 21 13 9 13 28 5 11 7 10 1 23 22 MEAN QFF PRESSURE IN HPA 1024.9 1021.8 1015.3 1013.2 1007.9 1005.5 1001.3 1006.7 1007.6 1019.4 1020.4 1020.9 1013.7 MAX. QFF PRESSURE IN HPA 1036.7 1032.6 1030.7 1024.3 1019.1 1014.5 1007.0 1013.5 1014.9 1029.3 1028.3 1030.5 1036.7 DAY 10 21 4 17 1 8 24 9 28 25 25 3 MIN. QFF PRESSURE IN HPA 1012.4 1012.7 1004.6 1003.9 996.9 994.6 993.1 1000.6 1001.9 1009.0 1008.1 1007.5 993.1 DAY 21 13 30 29 28 5 11 6 10 1 23 22 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 868.7 867.3 864.5 865.8 865.1 864.8 862.1 865.4 864.8 870.9 869.0 867.4 866.3 MAX. QFE PRESSURE IN HPA 876.0 875.5 874.3 871.1 872.4 869.2 867.2 870.5 870.0 876.9 874.5 875.9 876.9 DAY 9 21 3 17 14 23 24 9 24 27 1 3 MIN. QFE PRESSURE IN HPA 860.3 861.4 857.7 859.6 857.3 856.2 856.0 860.8 860.6 865.7 860.0 856.3 856.0 DAY 21 13 8 13 28 5 11 6 21 1 23 22 MEAN QNH PRESSURE IN HPA 1021.0 1019.3 1016.2 1017.7 1016.8 1016.4 1013.4 1017.1 1016.4 1023.5 1021.3 1019.4 1018.2 MAX. QNH PRESSURE IN HPA 1029.2 1028.7 1027.3 1023.6 1025.1 1021.5 1019.2 1023.0 1022.4 1030.3 1027.5 1029.1 1030.3 DAY 9 21 3 17 14 23 24 9 24 27 1 3 MIN. QNH PRESSURE IN HPA 1011.3 1012.6 1008.4 1010.5 1007.9 1006.7 1006.4 1011.9 1011.7 1017.5 1011.0 1006.8 1006.4 DAY 21 13 8 13 28 5 11 6 21 1 23 22 MEAN QFF PRESSURE IN HPA 1023.7 1020.8 1015.0 1013.2 1007.6 1005.6 1001.2 1006.6 1007.2 1018.6 1019.5 1019.2 1013.2 MAX. QFF PRESSURE IN HPA 1034.3 1031.3 1029.3 1024.1 1017.7 1014.4 1006.5 1014.5 1014.0 1029.2 1027.4 1028.4 1034.3 DAY 9 21 3 17 1 8 24 9 28 27 25 3 MIN. QFF PRESSURE IN HPA 1010.2 1011.1 1004.2 1003.2 996.8 993.9 992.8 999.7 1000.9 1009.1 1006.8 1006.6 992.8 DAY 21 13 30 29 27 5 11 6 1 1 23 22 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1962 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.8 7.2 13.2 14.3 21.4 24.7 28.4 25.5 21.9 16.8 8.6 4.4 15.8 MINIMUN AIR TEMPERATURE (C) -2.2 1.0 5.3 7.4 12.5 16.2 20.1 16.9 12.5 8.3 2.0 -1.3 8.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 2 12 1 0 0 0 0 15 DAYS WITH MINIMUM TEMP. <=-4 10 0 0 0 0 0 0 0 0 0 3 6 19 DAYS WITH FREEZING MIN.<= 0 26 14 1 0 0 0 0 0 0 0 14 23 78 TEMPERATURE RECORDS LOWEST(C) -6.0 -2.0 0.0 3.0 7.0 10.0 17.0 13.0 7.0 3.0 -4.0 -5.0 -6.0 DAY 25 10 3 13 2 11 8 31 25 12 18 1 MAXIMUM AIR TEMPERATURE (C) 9.5 12.5 18.9 19.4 26.5 29.6 33.0 30.7 27.8 23.2 14.7 10.4 21.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 7 15 31 22 9 0 0 0 84 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 13.0 17.0 25.0 24.0 31.0 33.0 37.0 37.0 32.0 29.0 22.0 15.0 37.0 DAY 1 20 20 9 9 8 4 23 12 7 1 21 DIF. BETWEEN (MAX.-MIN.) (C) 11.7 11.5 13.6 12.0 14.0 13.4 12.9 13.8 15.3 14.9 12.7 11.7 13.1 MEAN DAILY TEMP. (MDT) (C) 3.7 6.7 12.1 13.4 19.5 22.9 26.5 23.8 20.1 15.8 8.3 4.5 14.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 14.5 64.0 172.0 88.0 24.0 0.0 0.0 0.0 362.5 HEATING DEG. DAYS(BASE 18 0C) 444.5 315.5 182.5 138.0 18.5 1.0 0.0 0.0 10.0 73.0 290.0 417.0 1890.0 DEWPOINT (MEAN C) -5.1 -2.2 -0.6 3.6 6.4 8.5 8.9 8.5 4.8 5.2 -1.0 -3.7 2.8 MIXING RATIO (G/KG) 3.09 3.91 4.34 5.88 7.07 8.21 8.43 8.28 6.63 6.45 4.41 3.47 5.85 VAPOUR PRESSURE (HPA) 4.29 5.39 5.99 8.09 9.72 11.25 11.54 11.37 9.14 8.92 6.12 4.82 8.05 SATURATION DEF. (HPA) 4.01 5.11 9.87 8.78 16.57 20.67 27.92 22.21 18.35 11.12 5.76 3.87 12.85 RELATIVE HUMIDITY (MEAN %) 55 55 42 51 40 38 31 36 35 49 54 58 45 RELATIVE HUMIDITY (MAX. %) 72 76 65 72 59 56 45 53 54 72 72 77 64 RELATIVE HUMIDITY (MIN. %) 40 38 28 39 28 27 22 25 24 34 40 42 32 RELATIVE HUMIDITY (MEAN% 03UTC) 72 74 63 69 58 56 45 53 52 72 71 75 63 RELATIVE HUMIDITY (MEAN% 09UTC) 42 44 33 43 30 30 24 26 27 36 41 45 35 RELATIVE HUMIDITY (MEAN% 15UTC) 58 57 42 51 43 38 32 37 38 54 60 63 48 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 1.2 29.6 6.9 45.3 21.7 12.5 0.1 6.0 0.2 8.9 6.9 0.1 139.4 DAYS WITH PRECIPITATION >=10 0 1 0 1 0 1 0 0 0 0 0 0 3 DAYS WITH PRECIPITATION >= 5 0 2 0 3 2 1 0 1 0 1 1 0 11 DAYS WITH PRECIPITATION >= 1 1 4 2 8 5 2 0 1 0 2 2 0 27 DAYS WITH PRECIPITATION 3 8 6 16 17 8 1 4 1 5 7 1 77 GREATEST DAILY PRECIPITATION 1.0 19.0 3.2 17.0 8.3 11.0 0.1 6.0 0.2 5.0 5.0 0.1 19.0 DAY 11 8 29 3 11 4 28 22 8 11 11 23 DAY WITH THUNDER STORM 1 0 0 2 4 2 0 1 0 1 0 0 11 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 1 0 2 0 0 4 3 3 2 0 0 15 WIND DIRECTION (PREVAILING) 225 225 225 45 45 45 45 45 45 90 45 225 45 PREVAILING WIND SPEED(KNOTS) 6.3 7.3 6.1 6.6 6.2 6.3 7.4 6.2 5.6 4.5 4.9 6.3 6.0 PREVAILING WIND PERCENT 27.7 21.4 36.1 26.7 36.8 42.7 50.3 53.5 38.7 22.6 30.7 33.5 31.5 CALMS PERCENT OF WIND 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6 0.1 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 124 155 151 116 71 70 58 60 76 130 108 175 90 VECTOR WIND MAGNITUDE(KNOTS) 1.4 1.6 1.1 2.2 2.7 3.7 5.5 4.4 3.8 2.1 1.5 2.0 2.1 WIND STEADINESES (MEAN %) 22.2 27.1 18.3 34.4 46.6 66.1 82.1 75.9 71.7 43.7 27.8 35.1 36.2 WIND SPEED (MEAN KNOTS) 6.3 5.9 6.0 6.4 5.8 5.6 6.7 5.8 5.3 4.8 5.4 5.7 5.8 FASTEST WIND DIRECTION 50 210 360 90 230 360 90 230 360 180 50 130 210 FASTEST WIND SPEED (KNOTS) 12 25 15 13 15 14 18 20 15 20 18 15 25 DAY 23 21 15 2 10 30 26 21 9 10 1 30 DAYS WITH SKY CLEAR (0-2)/8 11 11 6 6 6 17 29 26 26 14 15 11 178 DAYS WITH P.CLOUDY (3-6)/8 10 9 16 15 23 12 2 5 4 13 9 10 128 DAYS WITH CLOUDY (7-8)/8 10 8 9 9 2 1 0 0 0 4 6 10 59 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 0 0 1 0 0 0 0 0 1 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1962 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 868.4 865.5 864.5 864.0 865.5 864.5 864.0 866.0 868.0 869.7 872.5 868.3 866.7 MAX. QFE PRESSURE IN HPA 877.7 876.2 873.3 873.6 870.8 871.0 868.1 872.8 876.7 876.6 881.2 875.2 881.2 DAY-HOUR 19- 6 11- 6 3- 6 19- 3 16- 6 2- 6 30- 6 26- 6 25- 6 27- 6 23- 6 4- 3 MIN. QFE PRESSURE IN HPA 858.3 852.9 849.0 854.7 856.2 855.0 859.6 859.5 860.8 858.6 866.7 861.1 849.0 DAY-HOUR 5-12 21- 3 28-12 5-12 10-15 9-12 14-15 21-12 12-15 10-12 9-12 16-12 MEAN QNH PRESSURE IN HPA 1020.6 1017.2 1016.2 1015.6 1017.3 1016.1 1015.6 1017.8 1020.1 1022.0 1025.3 1020.5 1018.7 MAX. QNH PRESSURE IN HPA 1031.2 1029.5 1026.2 1026.5 1023.3 1023.5 1020.2 1025.6 1030.0 1029.9 1035.2 1028.3 1035.2 DAY-HOUR 19- 6 11- 6 3- 6 19- 3 16- 6 2- 6 30- 6 26- 6 25- 6 27- 6 23- 6 4- 3 MIN. QNH PRESSURE IN HPA 1009.1 1002.9 998.4 1004.9 1006.7 1005.3 1010.5 1010.4 1011.9 1009.4 1018.6 1012.2 998.4 DAY-HOUR 5-12 21- 3 28-12 5-12 10-15 9-12 14-15 21-12 12-15 10-12 9-12 16-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 868.5 865.7 864.7 864.5 866.1 865.3 864.8 866.7 868.5 870.1 872.7 868.5 867.2 MAX. QFE PRESSURE IN HPA 876.5 873.9 872.5 873.6 870.5 870.9 867.9 872.1 875.6 875.4 880.9 875.2 880.9 DAY 19 11 6 19 16 2 30 26 25 12 23 4 MIN. QFE PRESSURE IN HPA 860.8 852.9 852.9 857.8 857.5 858.7 861.8 861.4 862.8 860.8 867.6 862.4 852.9 DAY 5 21 28 5 11 9 14 22 12 10 10 17 MEAN QNH PRESSURE IN HPA 1020.7 1017.5 1016.4 1016.2 1017.9 1017.0 1016.4 1018.6 1020.7 1022.5 1025.5 1020.7 1019.2 MAX. QNH PRESSURE IN HPA 1029.8 1026.8 1025.2 1026.5 1023.0 1023.4 1020.0 1024.8 1028.8 1028.6 1034.8 1028.3 1034.8 DAY 19 11 6 19 16 2 30 26 25 12 23 4 MIN. QNH PRESSURE IN HPA 1011.9 1002.9 1002.9 1008.5 1008.1 1009.5 1013.0 1012.6 1014.2 1011.9 1019.7 1013.7 1002.9 DAY 5 21 28 5 11 9 14 22 12 10 10 17 MEAN QFF PRESSURE IN HPA 1023.9 1018.6 1014.4 1012.9 1011.1 1008.2 1005.7 1009.7 1014.3 1018.9 1026.4 1023.6 1015.6 MAX. QFF PRESSURE IN HPA 1035.0 1029.5 1026.0 1025.6 1017.5 1015.4 1010.8 1015.8 1024.8 1028.3 1036.8 1032.3 1036.8 DAY 19 11 3 19 16 2 30 27 26 12 23 1 MIN. QFF PRESSURE IN HPA 1013.2 1000.4 998.1 1003.7 999.2 999.6 1001.8 1003.3 1006.8 1006.2 1016.5 1016.6 998.1 DAY 9 21 28 27 11 9 15 20 12 10 10 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1962 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 869.5 866.5 865.7 865.0 866.5 865.4 864.9 867.0 869.0 870.6 873.5 869.4 867.7 MAX. QFE PRESSURE IN HPA 877.7 876.2 873.3 873.3 870.8 871.0 868.1 872.8 876.7 876.6 881.2 875.0 881.2 DAY 19 11 3 19 16 2 30 26 25 27 23 1 MIN. QFE PRESSURE IN HPA 860.8 854.8 853.3 857.6 857.6 858.1 861.6 861.8 863.9 860.6 868.6 863.7 853.3 DAY 5 18 28 5 11 9 14 22 12 10 10 17 MEAN QNH PRESSURE IN HPA 1021.8 1018.4 1017.5 1016.7 1018.4 1017.1 1016.6 1019.0 1021.3 1023.1 1026.4 1021.7 1019.8 MAX. QNH PRESSURE IN HPA 1031.2 1029.5 1026.2 1026.2 1023.3 1023.5 1020.2 1025.6 1030.0 1029.9 1035.2 1028.1 1035.2 DAY 19 11 3 19 16 2 30 26 25 27 23 1 MIN. QNH PRESSURE IN HPA 1011.9 1005.1 1003.4 1008.3 1008.3 1008.8 1012.8 1013.0 1015.4 1011.7 1020.8 1015.2 1003.4 DAY 5 18 28 5 11 9 14 22 12 10 10 17 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 868.4 865.8 864.8 864.2 865.6 864.6 864.0 866.0 868.1 869.7 872.6 868.3 866.8 MAX. QFE PRESSURE IN HPA 876.0 875.7 872.6 872.4 869.8 870.3 866.9 872.1 876.0 875.5 880.2 873.8 880.2 DAY 19 11 3 19 14 22 30 26 25 27 23 1 MIN. QFE PRESSURE IN HPA 859.4 856.1 851.0 856.0 856.2 856.5 860.9 860.5 862.6 859.5 867.6 862.8 851.0 DAY 5 21 28 5 11 9 14 21 12 10 10 16 MEAN QNH PRESSURE IN HPA 1020.6 1017.6 1016.5 1015.7 1017.4 1016.3 1015.6 1017.9 1020.3 1022.1 1025.3 1020.4 1018.8 MAX. QNH PRESSURE IN HPA 1029.2 1028.9 1025.4 1025.1 1022.2 1022.7 1018.9 1024.8 1029.2 1028.7 1034.0 1026.7 1034.0 DAY 19 11 3 19 14 22 30 26 25 27 23 1 MIN. QNH PRESSURE IN HPA 1010.3 1006.5 1000.7 1006.4 1006.7 1007.0 1012.0 1011.6 1014.0 1010.4 1019.7 1014.2 1000.7 DAY 5 21 28 5 11 9 14 21 12 10 10 16 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 867.6 864.5 863.6 863.2 864.6 863.6 863.2 865.0 866.9 868.8 871.7 867.6 865.9 MAX. QFE PRESSURE IN HPA 875.6 873.6 871.3 871.5 868.6 869.2 865.9 870.9 875.1 874.3 879.5 873.4 879.5 DAY 19 11 3 19 15 22 27 26 25 27 23 3 MIN. QFE PRESSURE IN HPA 858.3 855.8 849.0 854.7 856.6 855.0 859.9 859.5 861.1 858.6 866.7 861.1 849.0 DAY 5 5 28 5 11 9 14 21 12 10 9 16 MEAN QNH PRESSURE IN HPA 1019.6 1016.1 1015.1 1014.6 1016.3 1015.1 1014.7 1016.7 1018.9 1021.0 1024.3 1019.6 1017.7 MAX. QNH PRESSURE IN HPA 1028.8 1026.5 1023.9 1024.1 1020.8 1021.5 1017.7 1023.4 1028.2 1027.3 1033.2 1026.3 1033.2 DAY 19 11 3 19 15 22 27 26 25 27 23 3 MIN. QNH PRESSURE IN HPA 1009.1 1006.2 998.4 1004.9 1007.1 1005.3 1010.9 1010.4 1012.2 1009.4 1018.6 1012.2 998.4 DAY 5 5 28 5 11 9 14 21 12 10 9 16 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1962 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 868.1 865.0 864.0 863.4 864.9 863.7 863.3 865.1 867.2 869.3 872.2 868.1 866.2 MAX. QFE PRESSURE IN HPA 875.3 874.4 871.5 870.6 868.4 869.7 866.1 870.9 875.8 875.3 879.8 874.8 879.8 DAY 18 11 6 19 15 22 31 26 25 27 23 3 MIN. QFE PRESSURE IN HPA 859.1 856.0 850.2 855.6 856.2 856.3 859.6 859.6 860.8 860.6 866.8 861.4 850.2 DAY 5 5 28 5 10 9 14 2 12 10 9 16 MEAN QNH PRESSURE IN HPA 1020.2 1016.7 1015.5 1014.9 1016.6 1015.2 1014.8 1016.8 1019.2 1021.6 1024.9 1020.2 1018.0 MAX. QNH PRESSURE IN HPA 1028.4 1027.4 1024.1 1023.1 1020.6 1022.1 1017.9 1023.4 1029.0 1028.4 1033.6 1027.9 1033.6 DAY 18 11 6 19 15 22 31 26 25 27 23 3 MIN. QNH PRESSURE IN HPA 1010.0 1006.4 999.8 1006.0 1006.7 1006.8 1010.5 1010.5 1011.9 1011.7 1018.7 1012.6 999.8 DAY 5 5 28 5 10 9 14 2 12 10 9 16 MEAN QFF PRESSURE IN HPA 1023.4 1017.7 1013.4 1011.6 1009.6 1006.3 1004.1 1007.9 1012.6 1017.9 1025.9 1023.1 1014.4 MAX. QFF PRESSURE IN HPA 1033.3 1030.1 1024.7 1021.5 1015.2 1013.3 1008.9 1014.4 1024.9 1025.6 1035.4 1031.4 1035.4 DAY 18 11 3 19 15 22 29 26 25 12 23 1 MIN. QFF PRESSURE IN HPA 1012.2 1006.0 995.1 1002.1 997.5 997.0 999.3 1000.3 1003.4 1005.6 1015.0 1015.4 995.1 DAY 8 20 28 5 10 9 4 2 12 10 9 23 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1963 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.2 8.6 9.1 18.1 19.3 26.3 28.4 26.5 23.9 17.7 9.4 1.9 16.3 MINIMUN AIR TEMPERATURE (C) -0.1 1.7 2.5 10.4 12.0 17.2 20.3 18.8 14.8 10.2 2.6 -3.0 8.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 1 17 4 0 0 0 0 22 DAYS WITH MINIMUM TEMP. <=-4 3 3 2 0 0 0 0 0 0 0 0 11 19 DAYS WITH FREEZING MIN.<= 0 22 10 9 0 0 0 0 0 0 0 7 27 75 TEMPERATURE RECORDS LOWEST(C) -4.0 -6.0 -6.0 5.0 7.0 14.0 12.0 14.0 11.0 7.0 -3.0 -11.0 -11.0 DAY 1 9 8 1 4 13 1 23 11 11 28 29 MAXIMUM AIR TEMPERATURE (C) 12.3 14.5 14.3 22.8 23.9 31.0 33.5 31.9 30.0 23.5 15.1 7.0 21.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 21 30 28 16 0 0 0 95 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 1 1 TEMPERATURE RECORDS HIGHEST(C) 19.0 20.0 22.0 28.0 29.0 36.0 37.0 34.0 35.0 28.0 20.0 15.0 37.0 DAY 27 20 25 9 28 22 4 12 5 1 1 23 DIF. BETWEEN (MAX.-MIN.) (C) 12.4 12.8 11.8 12.4 11.9 13.8 13.2 13.1 15.2 13.3 12.5 10.0 12.8 MEAN DAILY TEMP. (MDT) (C) 6.1 8.1 8.4 16.6 18.0 24.1 26.9 25.3 22.4 16.8 8.9 2.0 15.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 2.0 3.5 94.5 184.0 134.0 50.5 0.0 0.0 0.0 468.5 HEATING DEG. DAYS(BASE 18 0C) 368.5 277.5 298.5 61.5 35.0 0.0 0.0 0.0 0.0 46.5 274.0 496.5 1858.0 DEWPOINT (MEAN C) -2.5 -2.0 -2.1 4.8 8.1 9.4 10.9 10.3 8.2 8.1 1.5 -3.4 4.3 MIXING RATIO (G/KG) 3.75 3.94 4.03 6.37 8.00 8.73 9.83 9.38 8.08 7.88 5.16 3.54 6.56 VAPOUR PRESSURE (HPA) 5.19 5.45 5.55 8.74 10.94 11.95 13.40 12.82 11.12 10.88 7.14 4.91 9.01 SATURATION DEF. (HPA) 4.84 6.46 6.61 12.73 12.13 23.19 26.19 22.70 19.69 10.08 5.21 2.45 12.69 RELATIVE HUMIDITY (MEAN %) 57 50 50 44 51 37 36 39 40 56 60 70 49 RELATIVE HUMIDITY (MAX. %) 76 71 70 66 72 54 52 58 60 78 83 85 69 RELATIVE HUMIDITY (MIN. %) 41 34 35 31 38 26 26 26 26 41 46 55 35 RELATIVE HUMIDITY (MEAN% 03UTC) 76 71 70 66 71 53 51 57 59 77 82 84 68 RELATIVE HUMIDITY (MEAN% 09UTC) 43 39 40 35 42 29 29 29 28 42 49 57 39 RELATIVE HUMIDITY (MEAN% 15UTC) 60 50 49 42 47 37 36 41 46 64 64 75 51 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 0.5 4.2 45.3 14.6 44.1 0.0 0.0 7.4 0.1 26.4 6.4 7.4 156.4 DAYS WITH PRECIPITATION >=10 0 0 1 1 2 0 0 0 0 1 0 0 5 DAYS WITH PRECIPITATION >= 5 0 0 4 1 3 0 0 1 0 1 0 0 10 DAYS WITH PRECIPITATION >= 1 0 1 5 2 8 0 0 2 0 4 2 3 27 DAYS WITH PRECIPITATION 2 4 11 11 20 2 2 6 3 10 3 7 81 GREATEST DAILY PRECIPITATION 0.4 4.0 23.0 13.0 13.0 0.0 0.0 5.0 0.1 18.1 4.0 4.0 23.0 DAY 4 3 27 25 2 ** ** 3 10 7 12 11 DAY WITH THUNDER STORM 0 0 2 1 2 0 0 2 0 2 0 0 9 DAYS WITH SNOW OR SLEET 0 0 1 0 0 0 0 0 0 0 0 3 4 DAYS WITH DUST 1 0 1 2 1 2 0 0 0 0 0 0 7 WIND DIRECTION (PREVAILING) 225 225 225 225 45 90 45 45 45 45 45 225 45 PREVAILING WIND SPEED(KNOTS) 5.7 7.0 7.7 7.1 5.3 5.4 6.3 5.1 4.8 5.1 5.3 6.8 5.4 PREVAILING WIND PERCENT 30.3 29.3 26.3 27.3 25.8 36.0 44.5 43.2 34.7 28.4 24.7 25.8 28.2 CALMS PERCENT OF WIND 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NO. OF WIND OBSERVATION 155 140 156 150 155 150 155 155 150 155 150 155 1826 VECTOR WIND DIRECTION (MEAN) 162 178 142 162 138 78 60 59 76 81 135 149 99 VECTOR WIND MAGNITUDE(KNOTS) 1.4 1.3 1.6 1.7 1.1 3.3 4.3 3.4 2.3 2.8 1.8 1.5 1.7 WIND STEADINESES (MEAN %) 26.4 20.6 23.2 29.8 17.7 62.3 78.2 75.6 53.5 53.8 31.0 25.0 30.4 WIND SPEED (MEAN KNOTS) 5.3 6.3 6.9 5.7 6.2 5.3 5.5 4.5 4.3 5.2 5.8 6.0 5.6 FASTEST WIND DIRECTION 230 270 270 210 270 90 50 50 50 360 230 50 270 FASTEST WIND SPEED (KNOTS) 10 20 20 14 20 18 20 15 12 13 12 12 20 DAY 21 8 22 12 12 28 20 21 9 2 24 2 DAYS WITH SKY CLEAR (0-2)/8 7 6 8 4 4 26 21 18 22 13 18 12 159 DAYS WITH P.CLOUDY (3-6)/8 17 10 15 14 15 4 10 12 7 12 8 10 134 DAYS WITH CLOUDY (7-8)/8 7 12 8 12 12 0 0 1 1 6 4 9 72 DAYS WITH VISIBILITY =< 2 KM 0 0 1 0 0 0 0 1 1 1 0 0 4 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1963 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 867.9 866.3 862.9 862.6 861.9 863.7 862.5 863.9 867.2 869.8 869.1 868.0 865.5 MAX. QFE PRESSURE IN HPA 872.5 874.0 871.2 871.2 867.3 869.1 866.6 867.7 877.5 875.6 874.3 876.4 877.5 DAY-HOUR 6- 6 5- 6 23- 6 2- 6 9- 6 28- 6 29- 6 5- 6 24- 6 18- 6 6- 6 26- 6 MIN. QFE PRESSURE IN HPA 862.5 859.8 853.7 856.4 854.4 857.7 856.3 858.8 860.1 864.6 863.9 856.4 853.7 DAY-HOUR 4- 9 13-15 5-15 16-12 11-12 16-12 4-15 12-15 3-15 31-12 25- 9 11- 3 MEAN QNH PRESSURE IN HPA 1020.0 1018.1 1014.3 1013.9 1013.2 1015.2 1013.8 1015.4 1019.2 1022.1 1021.4 1020.1 1017.2 MAX. QNH PRESSURE IN HPA 1025.2 1027.0 1023.8 1023.8 1019.3 1021.4 1018.5 1019.8 1030.9 1028.8 1027.3 1029.7 1030.9 DAY-HOUR 6- 6 5- 6 23- 6 2- 6 9- 6 28- 6 29- 6 5- 6 24- 6 18- 6 6- 6 26- 6 MIN. QNH PRESSURE IN HPA 1013.8 1010.8 1003.8 1006.9 1004.6 1008.4 1006.8 1009.6 1011.1 1016.2 1015.4 1006.9 1003.8 DAY-HOUR 4- 9 13-15 5-15 16-12 11-12 16-12 4-15 12-15 3-15 31-12 25- 9 11- 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 867.9 866.4 863.3 863.1 862.6 864.6 863.4 864.8 867.8 870.3 869.3 868.3 866.0 MAX. QFE PRESSURE IN HPA 871.2 873.6 870.7 869.8 867.2 868.8 866.4 867.6 877.2 874.4 874.3 875.3 877.2 DAY 6 7 23 3 9 2 29 5 24 18 27 26 MIN. QFE PRESSURE IN HPA 863.6 860.7 857.4 857.2 855.5 860.6 859.7 861.5 862.4 866.4 864.8 856.4 855.5 DAY 4 26 20 16 11 15 5 12 3 31 25 11 MEAN QNH PRESSURE IN HPA 1020.0 1018.3 1014.8 1014.5 1014.0 1016.3 1014.8 1016.5 1019.9 1022.7 1021.6 1020.5 1017.8 MAX. QNH PRESSURE IN HPA 1023.8 1026.5 1023.2 1022.2 1019.2 1021.0 1018.3 1019.7 1030.6 1027.4 1027.3 1028.4 1030.6 DAY 6 7 23 3 9 2 29 5 24 18 27 26 MIN. QNH PRESSURE IN HPA 1015.1 1011.8 1008.0 1007.8 1005.9 1011.7 1010.7 1012.7 1013.7 1018.3 1016.5 1006.9 1005.9 DAY 4 26 20 16 11 15 5 12 3 31 25 11 MEAN QFF PRESSURE IN HPA 1022.1 1018.9 1014.7 1009.4 1007.6 1006.6 1004.0 1006.7 1012.2 1018.3 1021.9 1024.7 1013.9 MAX. QFF PRESSURE IN HPA 1027.4 1030.7 1025.6 1020.3 1015.0 1013.0 1007.3 1010.1 1024.2 1023.9 1030.8 1036.2 1036.2 DAY 6 7 23 2 14 13 29 5 24 19 27 27 MIN. QFF PRESSURE IN HPA 1015.9 1008.3 1005.7 1002.1 998.8 1001.0 998.4 1002.0 1003.9 1013.1 1014.8 1008.0 998.4 DAY 4 26 20 16 11 16 5 12 3 25 1 11 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1963 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 868.8 867.3 863.9 863.7 862.9 864.7 863.6 865.0 868.2 870.8 870.0 868.9 866.5 MAX. QFE PRESSURE IN HPA 872.5 874.0 871.2 871.2 867.3 869.1 866.6 867.7 877.5 875.6 874.3 876.4 877.5 DAY 6 5 23 2 9 28 29 5 24 18 6 26 MIN. QFE PRESSURE IN HPA 863.8 861.3 855.4 858.5 855.3 860.6 859.8 861.8 863.0 866.8 865.3 858.1 855.3 DAY 4 14 20 16 11 16 5 2 3 31 25 11 MEAN QNH PRESSURE IN HPA 1021.1 1019.3 1015.5 1015.2 1014.3 1016.4 1015.0 1016.7 1020.3 1023.3 1022.4 1021.1 1018.4 MAX. QNH PRESSURE IN HPA 1025.2 1027.0 1023.8 1023.8 1019.3 1021.4 1018.5 1019.8 1030.9 1028.8 1027.3 1029.7 1030.9 DAY 6 5 23 2 9 28 29 5 24 18 6 26 MIN. QNH PRESSURE IN HPA 1015.3 1012.5 1005.7 1009.3 1005.6 1011.7 1010.8 1013.0 1014.4 1018.7 1017.0 1008.8 1005.6 DAY 4 14 20 16 11 16 5 2 3 31 25 11 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 867.9 866.6 863.1 862.8 862.1 864.0 862.7 864.1 867.3 869.8 869.1 867.8 865.6 MAX. QFE PRESSURE IN HPA 871.0 873.6 870.6 870.5 866.6 868.6 865.6 866.8 876.2 875.0 873.0 875.0 876.2 DAY 6 7 23 2 9 28 29 5 24 18 6 26 MIN. QFE PRESSURE IN HPA 862.5 860.9 857.0 856.8 854.6 859.4 858.9 860.6 861.9 865.7 863.9 857.2 854.6 DAY 4 12 5 16 11 16 5 2 3 31 25 11 MEAN QNH PRESSURE IN HPA 1019.9 1018.5 1014.5 1014.2 1013.4 1015.6 1014.1 1015.6 1019.3 1022.2 1021.4 1019.9 1017.4 MAX. QNH PRESSURE IN HPA 1023.5 1026.5 1023.1 1023.0 1018.5 1020.8 1017.4 1018.7 1029.5 1028.1 1025.8 1028.1 1029.5 DAY 6 7 23 2 9 28 29 5 24 18 6 26 MIN. QNH PRESSURE IN HPA 1013.8 1012.0 1007.6 1007.3 1004.8 1010.3 1009.7 1011.7 1013.2 1017.5 1015.4 1007.8 1004.8 DAY 4 12 5 16 11 16 5 2 3 31 25 11 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 867.2 865.4 861.9 861.5 861.1 862.8 861.4 862.8 866.2 868.8 868.3 867.3 864.6 MAX. QFE PRESSURE IN HPA 871.3 872.3 868.8 869.4 865.7 867.4 864.7 865.6 875.4 874.2 872.0 875.6 875.6 DAY 5 6 23 2 9 28 20 5 24 18 6 26 MIN. QFE PRESSURE IN HPA 863.4 859.9 854.1 856.4 854.4 857.7 857.0 859.1 860.3 864.6 864.2 858.5 854.1 DAY 4 12 5 16 11 16 4 12 3 31 25 10 MEAN QNH PRESSURE IN HPA 1019.3 1017.2 1013.2 1012.7 1012.2 1014.1 1012.6 1014.2 1018.1 1021.0 1020.5 1019.3 1016.2 MAX. QNH PRESSURE IN HPA 1023.9 1025.0 1021.0 1021.7 1017.5 1019.4 1016.4 1017.4 1028.6 1027.2 1024.7 1028.8 1028.8 DAY 5 6 23 2 9 28 20 5 24 18 6 26 MIN. QNH PRESSURE IN HPA 1014.9 1010.9 1004.3 1006.9 1004.6 1008.4 1007.6 1010.0 1011.3 1016.2 1015.8 1009.3 1004.3 DAY 4 12 5 16 11 16 4 12 3 31 25 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1963 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 867.7 865.7 862.1 861.8 861.1 862.4 861.3 862.7 866.4 869.3 868.9 867.9 864.8 MAX. QFE PRESSURE IN HPA 871.8 873.3 868.2 869.5 866.3 867.3 865.4 865.7 876.0 874.8 872.6 876.1 876.1 DAY 5 6 23 2 20 28 20 5 24 18 2 26 MIN. QFE PRESSURE IN HPA 864.0 859.8 853.7 857.5 854.9 858.1 856.3 858.8 860.1 865.0 865.0 858.8 853.7 DAY 4 13 5 15 11 16 4 12 3 31 12 10 MEAN QNH PRESSURE IN HPA 1019.7 1017.5 1013.4 1013.0 1012.3 1013.8 1012.5 1014.1 1018.3 1021.6 1021.2 1020.0 1016.4 MAX. QNH PRESSURE IN HPA 1024.4 1026.2 1020.3 1021.8 1018.2 1019.3 1017.1 1017.5 1029.2 1027.9 1025.4 1029.3 1029.3 DAY 5 6 23 2 20 28 20 5 24 18 2 26 MIN. QNH PRESSURE IN HPA 1015.6 1010.8 1003.8 1008.1 1005.2 1008.8 1006.8 1009.6 1011.1 1016.7 1016.7 1009.6 1003.8 DAY 4 13 5 15 11 16 4 12 3 31 12 10 MEAN QFF PRESSURE IN HPA 1021.7 1018.0 1013.2 1007.7 1005.9 1004.1 1001.5 1004.2 1010.6 1017.1 1021.5 1024.1 1012.5 MAX. QFF PRESSURE IN HPA 1028.5 1029.9 1021.6 1019.8 1013.9 1009.7 1006.3 1007.6 1023.0 1025.4 1027.5 1037.7 1037.7 DAY 5 6 1 2 13 28 20 5 24 18 26 26 MIN. QFF PRESSURE IN HPA 1016.4 1008.6 1002.5 1002.4 999.4 997.5 994.6 998.9 1001.1 1013.2 1015.3 1011.3 994.6 DAY 26 23 5 11 30 22 4 12 3 25 12 10 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1964 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -4.8 4.7 11.4 13.5 22.8 25.9 28.4 27.8 23.2 15.1 9.5 0.9 14.9 MINIMUN AIR TEMPERATURE (C) -10.1 -1.9 4.4 5.9 13.5 17.0 20.4 19.4 14.5 6.1 2.2 -4.1 7.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 14 11 0 0 0 0 25 DAYS WITH MINIMUM TEMP. <=-4 31 5 0 0 0 0 0 0 0 0 2 19 57 DAYS WITH FREEZING MIN.<= 0 31 23 5 1 0 0 0 0 0 0 5 29 94 TEMPERATURE RECORDS LOWEST(C) -14.0 -11.0 -2.0 0.0 5.0 14.0 16.0 14.0 8.0 1.0 -5.0 -9.0 -14.0 DAY 20 1 8 16 2 19 15 25 25 28 29 27 MAXIMUM AIR TEMPERATURE (C) 0.6 9.9 16.5 18.6 28.1 31.0 33.7 33.1 29.2 21.6 15.5 6.2 20.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 12 24 30 26 12 0 0 0 104 DAYS WITH MAXIMUM TEMP. <= 0 15 0 0 0 0 0 0 0 0 0 0 0 15 TEMPERATURE RECORDS HIGHEST(C) 6.0 16.0 25.0 28.0 32.0 34.0 38.0 38.0 36.0 29.0 19.0 11.0 38.0 DAY 18 24 26 30 10 9 9 14 1 1 8 7 DIF. BETWEEN (MAX.-MIN.) (C) 10.7 11.8 12.1 12.7 14.6 14.0 13.3 13.7 14.7 15.5 13.3 10.3 13.0 MEAN DAILY TEMP. (MDT) (C) -4.8 4.0 10.5 12.2 20.8 24.0 27.0 26.3 21.8 13.8 8.9 1.1 13.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.5 38.0 92.0 187.5 165.0 48.0 0.5 0.0 0.0 531.5 HEATING DEG. DAYS(BASE 18 0C) 705.5 406.5 234.0 176.0 14.0 0.0 0.0 0.0 0.0 137.0 274.0 524.5 2471.5 DEWPOINT (MEAN C) -9.7 -2.9 1.5 1.6 5.2 8.2 11.3 9.6 7.4 2.4 -1.1 -5.9 2.3 MIXING RATIO (G/KG) 2.17 3.65 5.04 5.11 6.53 8.05 9.95 8.97 7.80 5.35 4.17 2.93 5.81 VAPOUR PRESSURE (HPA) 3.01 5.04 6.95 7.02 8.99 11.01 13.56 12.25 10.72 7.42 5.79 4.08 7.99 SATURATION DEF. (HPA) 1.43 3.86 7.15 9.43 19.94 23.39 26.29 26.38 18.97 10.91 6.69 2.70 13.09 RELATIVE HUMIDITY (MEAN %) 69 61 54 48 33 34 37 35 39 45 50 64 47 RELATIVE HUMIDITY (MAX. %) 78 83 77 69 49 48 53 53 60 70 71 80 66 RELATIVE HUMIDITY (MIN. %) 58 45 39 35 24 25 26 23 26 30 35 49 35 RELATIVE HUMIDITY (MEAN% 03UTC) 76 83 77 68 49 47 53 52 59 70 69 78 65 RELATIVE HUMIDITY (MEAN% 09UTC) 61 48 43 39 25 27 29 25 29 32 38 53 37 RELATIVE HUMIDITY (MEAN% 15UTC) 71 62 52 47 34 35 35 36 42 51 57 67 49 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 15.0 6.2 29.5 15.8 0.0 1.4 0.0 1.0 0.0 0.0 6.5 13.4 88.8 DAYS WITH PRECIPITATION >=10 1 0 1 0 0 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 5 2 0 2 1 0 0 0 0 0 0 1 2 8 DAYS WITH PRECIPITATION >= 1 2 2 5 5 0 1 0 1 0 0 1 2 19 DAYS WITH PRECIPITATION 4 8 11 11 2 7 3 2 1 0 5 9 63 GREATEST DAILY PRECIPITATION 10.0 4.1 16.0 6.0 0.0 1.0 0.0 1.0 0.0 0.0 6.0 7.0 16.0 DAY 1 19 13 18 ** 18 ** 25 ** ** 27 17 DAY WITH THUNDER STORM 0 0 1 3 2 1 0 0 0 0 0 0 7 DAYS WITH SNOW OR SLEET 1 1 0 0 0 0 0 0 0 0 0 3 5 DAYS WITH DUST 0 0 0 2 2 1 0 0 1 0 2 0 8 WIND DIRECTION (PREVAILING) 225 180 225 45 90 45 45 45 90 90 225 225 45 PREVAILING WIND SPEED(KNOTS) 6.5 6.3 6.4 7.2 4.9 7.3 5.8 6.3 5.6 5.7 6.9 6.4 6.2 PREVAILING WIND PERCENT 27.1 24.1 25.2 20.7 25.8 44.7 43.9 34.8 44.0 27.7 26.0 23.9 25.3 CALMS PERCENT OF WIND 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6 0.1 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 166 148 148 112 120 64 68 76 78 112 166 128 98 VECTOR WIND MAGNITUDE(KNOTS) 1.6 1.2 1.3 1.8 2.0 4.7 4.2 3.6 4.4 2.3 1.8 1.6 2.1 WIND STEADINESES (MEAN %) 24.6 19.0 21.0 24.3 34.5 68.1 79.2 67.9 77.2 42.6 31.0 26.7 34.4 WIND SPEED (MEAN KNOTS) 6.5 6.3 6.2 7.4 5.8 6.9 5.3 5.3 5.7 5.4 5.8 6.0 6.1 FASTEST WIND DIRECTION 270 230 360 270 220 50 50 50 50 180 230 230 270 FASTEST WIND SPEED (KNOTS) 35 10 15 25 30 21 15 16 20 15 33 10 35 DAY 1 16 17 30 19 13 27 24 21 12 26 21 DAYS WITH SKY CLEAR (0-2)/8 20 9 8 8 17 19 26 29 28 28 13 15 220 DAYS WITH P.CLOUDY (3-6)/8 8 12 13 10 10 11 5 2 2 3 15 9 100 DAYS WITH CLOUDY (7-8)/8 3 8 10 12 4 0 0 0 0 0 2 7 46 DAYS WITH VISIBILITY =< 2 KM 1 0 0 2 0 0 0 0 0 0 1 1 5 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1964 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 868.2 865.7 865.0 862.2 864.9 862.9 861.9 862.2 867.2 871.3 868.9 871.2 866.0 MAX. QFE PRESSURE IN HPA 877.6 872.4 871.9 872.1 869.6 869.9 869.0 868.0 873.4 877.0 878.2 877.6 878.2 DAY-HOUR 30- 6 28- 6 18- 6 24- 9 10- 6 3- 6 22- 6 31- 6 17- 6 30- 6 1- 6 9- 6 MIN. QFE PRESSURE IN HPA 848.9 860.2 858.0 851.6 856.8 855.6 856.0 857.2 863.0 862.1 850.0 860.8 848.9 DAY-HOUR 19- 9 10-15 3-12 7-12 1-12 15-15 2-15 3-12 11-12 3-12 27-15 24-12 MEAN QNH PRESSURE IN HPA 1020.3 1017.5 1016.7 1013.5 1016.6 1014.3 1013.2 1013.5 1019.2 1023.9 1021.1 1023.8 1017.8 MAX. QNH PRESSURE IN HPA 1031.1 1025.1 1024.6 1024.8 1021.9 1022.3 1021.3 1020.1 1026.3 1030.4 1031.7 1031.1 1031.7 DAY-HOUR 30- 6 28- 6 18- 6 24- 9 10- 6 3- 6 22- 6 31- 6 17- 6 30- 6 1- 6 9- 6 MIN. QNH PRESSURE IN HPA 998.3 1011.2 1008.7 1001.4 1007.3 1006.0 1006.4 1007.8 1014.4 1013.4 999.6 1011.9 998.3 DAY-HOUR 19- 9 10-15 3-12 7-12 1-12 15-15 2-15 3-12 11-12 3-12 27-15 24-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 868.2 866.1 865.3 862.7 865.4 863.6 862.7 862.9 867.7 871.5 869.0 871.3 866.4 MAX. QFE PRESSURE IN HPA 875.8 872.2 870.8 871.7 869.0 869.2 868.0 867.0 872.9 876.2 877.0 877.0 877.0 DAY 30 28 18 25 10 3 22 31 17 30 1 9 MIN. QFE PRESSURE IN HPA 849.2 861.2 859.4 854.4 859.9 858.5 859.0 859.2 864.3 863.3 854.0 861.8 849.2 DAY 19 11 4 10 1 29 8 3 11 3 27 25 MEAN QNH PRESSURE IN HPA 1020.4 1017.9 1017.1 1014.1 1017.2 1015.1 1014.1 1014.3 1019.8 1024.1 1021.3 1023.8 1018.3 MAX. QNH PRESSURE IN HPA 1029.0 1024.9 1023.3 1024.3 1021.3 1021.5 1020.1 1019.0 1025.7 1029.5 1030.4 1030.4 1030.4 DAY 30 28 18 25 10 3 22 31 17 30 1 9 MIN. QNH PRESSURE IN HPA 998.7 1012.4 1010.3 1004.6 1010.9 1009.3 1009.9 1010.1 1015.9 1014.8 1004.2 1013.0 998.7 DAY 19 11 4 10 1 29 8 3 11 3 27 25 MEAN QFF PRESSURE IN HPA 1029.2 1020.8 1015.8 1011.6 1009.8 1005.8 1003.3 1004.0 1012.5 1021.8 1021.8 1028.9 1015.4 MAX. QFF PRESSURE IN HPA 1038.7 1033.2 1023.1 1023.7 1014.3 1012.4 1009.0 1010.5 1020.4 1030.3 1034.0 1036.5 1038.7 DAY 30 1 23 24 3 1 22 22 17 30 30 27 MIN. QFF PRESSURE IN HPA 1002.8 1013.9 1007.2 1000.6 1002.3 998.9 997.3 999.4 1006.9 1009.9 1004.3 1016.5 997.3 DAY 19 11 13 8 12 16 10 13 8 3 26 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1964 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 868.9 866.8 866.2 863.3 865.9 864.0 863.1 863.4 868.3 872.2 869.8 872.1 867.0 MAX. QFE PRESSURE IN HPA 877.6 872.4 871.9 872.0 869.6 869.9 869.0 868.0 873.4 877.0 878.2 877.6 878.2 DAY 30 28 18 24 10 3 22 31 17 30 1 9 MIN. QFE PRESSURE IN HPA 849.3 862.0 860.0 855.0 859.7 858.8 859.2 859.5 864.6 863.6 854.4 862.1 849.3 DAY 19 11 4 9 1 29 9 3 11 3 27 24 MEAN QNH PRESSURE IN HPA 1021.1 1018.8 1018.0 1014.8 1017.7 1015.5 1014.5 1014.8 1020.5 1024.9 1022.1 1024.8 1019.0 MAX. QNH PRESSURE IN HPA 1031.1 1025.1 1024.6 1024.7 1021.9 1022.3 1021.3 1020.1 1026.3 1030.4 1031.7 1031.1 1031.7 DAY 30 28 18 24 10 3 22 31 17 30 1 9 MIN. QNH PRESSURE IN HPA 998.8 1013.3 1011.0 1005.3 1010.7 1009.6 1010.1 1010.4 1016.2 1015.1 1004.6 1013.4 998.8 DAY 19 11 4 9 1 29 9 3 11 3 27 24 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 868.1 865.8 865.1 862.4 865.0 863.2 862.2 862.4 867.4 871.5 869.0 871.2 866.1 MAX. QFE PRESSURE IN HPA 877.2 871.6 870.5 872.1 868.3 869.4 868.0 867.7 871.7 876.3 877.4 876.7 877.4 DAY 30 28 18 24 31 1 22 31 17 30 1 1 MIN. QFE PRESSURE IN HPA 848.9 860.8 858.8 853.2 858.4 858.2 858.3 858.7 864.1 863.1 852.2 861.1 848.9 DAY 19 4 4 7 1 28 9 2 11 3 26 24 MEAN QNH PRESSURE IN HPA 1020.2 1017.6 1016.9 1013.7 1016.7 1014.6 1013.5 1013.8 1019.5 1024.1 1021.2 1023.7 1017.9 MAX. QNH PRESSURE IN HPA 1030.6 1024.2 1023.0 1024.8 1020.5 1021.7 1020.1 1019.8 1024.3 1029.6 1030.8 1030.0 1030.8 DAY 30 28 18 24 31 1 22 31 17 30 1 1 MIN. QNH PRESSURE IN HPA 998.3 1011.9 1009.6 1003.2 1009.2 1008.9 1009.1 1009.5 1015.7 1014.5 1002.1 1012.2 998.3 DAY 19 4 4 7 1 28 9 2 11 3 26 24 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 867.5 864.8 864.2 861.3 864.3 862.0 861.0 861.2 866.3 870.5 868.2 870.6 865.1 MAX. QFE PRESSURE IN HPA 875.8 870.6 869.9 870.8 867.5 868.4 866.2 866.8 870.8 875.0 876.9 875.9 876.9 DAY 30 28 18 24 10 3 22 31 16 30 1 1 MIN. QFE PRESSURE IN HPA 851.0 860.6 858.0 851.6 856.8 857.0 857.0 857.2 863.0 862.1 851.1 860.8 851.0 DAY 19 10 3 7 1 28 2 3 11 3 26 24 MEAN QNH PRESSURE IN HPA 1019.6 1016.4 1015.7 1012.5 1015.9 1013.3 1012.1 1012.4 1018.2 1023.0 1020.3 1023.1 1016.9 MAX. QNH PRESSURE IN HPA 1029.0 1023.1 1022.3 1023.3 1019.5 1020.6 1018.1 1018.7 1023.3 1028.1 1030.3 1029.1 1030.3 DAY 30 28 18 24 10 3 22 31 16 30 1 1 MIN. QNH PRESSURE IN HPA 1000.7 1011.7 1008.7 1001.4 1007.3 1007.6 1007.6 1007.8 1014.4 1013.4 1000.8 1011.9 1000.7 DAY 19 10 3 7 1 28 2 3 11 3 26 24 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1964 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 868.1 865.1 864.3 861.3 864.1 861.9 860.7 861.1 866.5 870.8 868.6 871.1 865.3 MAX. QFE PRESSURE IN HPA 875.6 870.0 869.0 870.8 867.3 868.2 866.0 866.6 871.4 875.6 877.2 876.4 877.2 DAY 21 1 18 24 10 1 22 31 16 29 1 1 MIN. QFE PRESSURE IN HPA 854.2 860.2 858.4 852.0 857.5 855.6 856.0 857.4 863.1 862.4 850.0 861.0 850.0 DAY 19 10 3 7 1 15 2 3 11 5 27 24 MEAN QNH PRESSURE IN HPA 1020.3 1016.8 1015.9 1012.5 1015.7 1013.2 1011.8 1012.2 1018.4 1023.3 1020.8 1023.6 1017.0 MAX. QNH PRESSURE IN HPA 1028.8 1022.4 1021.3 1023.3 1019.3 1020.3 1017.8 1018.5 1024.0 1028.8 1030.6 1029.7 1030.6 DAY 21 1 18 24 10 1 22 31 16 29 1 1 MIN. QNH PRESSURE IN HPA 1004.4 1011.2 1009.2 1001.9 1008.1 1006.0 1006.4 1008.0 1014.5 1013.7 999.6 1012.1 999.6 DAY 19 10 3 7 1 15 2 3 11 5 27 24 MEAN QFF PRESSURE IN HPA 1029.1 1019.4 1014.4 1009.8 1008.2 1003.8 1000.9 1001.9 1011.0 1021.1 1021.3 1028.7 1014.1 MAX. QFF PRESSURE IN HPA 1039.9 1030.8 1023.6 1022.0 1012.8 1010.7 1007.5 1008.4 1017.9 1029.3 1034.6 1036.2 1039.9 DAY 21 1 8 24 2 4 27 25 17 30 30 27 MIN. QFF PRESSURE IN HPA 1011.1 1012.7 1008.3 995.5 1001.7 995.8 994.1 996.9 1005.5 1008.7 1001.4 1015.4 994.1 DAY 19 24 20 7 11 15 2 3 7 2 27 24 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1965 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 0.7 4.4 8.7 15.1 22.7 25.3 27.3 27.2 21.6 16.6 11.1 5.0 15.5 MINIMUN AIR TEMPERATURE (C) -3.2 -2.3 1.5 6.1 13.5 15.7 18.9 17.2 12.3 8.5 3.2 -2.3 7.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 5 2 0 0 0 0 7 DAYS WITH MINIMUM TEMP. <=-4 13 11 4 0 0 0 0 0 0 0 0 8 36 DAYS WITH FREEZING MIN.<= 0 29 25 11 0 0 0 0 0 0 0 5 29 99 TEMPERATURE RECORDS LOWEST(C) -7.0 -6.0 -6.0 1.0 4.0 11.0 15.0 11.0 7.0 1.0 -1.0 -8.0 -8.0 DAY 4 17 16 3 5 7 7 30 24 27 26 23 MAXIMUM AIR TEMPERATURE (C) 4.7 9.2 13.8 20.9 28.4 30.6 32.5 32.8 27.4 22.4 16.3 10.1 20.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 1 16 22 28 28 8 0 0 0 103 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 11.0 16.0 23.0 30.0 34.0 35.0 39.0 37.0 33.0 29.0 21.0 16.0 39.0 DAY 9 27 11 29 17 18 14 20 15 15 7 16 DIF. BETWEEN (MAX.-MIN.) (C) 7.9 11.5 12.3 14.8 14.9 14.9 13.6 15.6 15.1 13.9 13.1 12.4 13.4 MEAN DAILY TEMP. (MDT) (C) 0.7 3.5 7.7 13.5 21.0 23.2 25.7 25.0 19.9 15.5 9.7 3.9 14.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.5 43.0 67.5 145.5 125.0 17.5 0.0 0.0 0.0 399.0 HEATING DEG. DAYS(BASE 18 0C) 518.5 406.5 320.0 145.0 15.0 0.0 0.0 0.0 12.0 82.5 248.0 436.5 2184.0 DEWPOINT (MEAN C) -4.1 -5.2 -0.6 1.2 6.7 7.0 9.9 8.0 7.7 6.0 1.6 -3.7 2.9 MIXING RATIO (G/KG) 3.33 3.09 4.39 5.04 7.26 7.42 9.08 8.00 7.78 7.02 5.02 3.43 5.91 VAPOUR PRESSURE (HPA) 4.61 4.27 6.07 6.93 10.01 10.18 12.40 10.98 10.72 9.67 6.95 4.75 8.13 SATURATION DEF. (HPA) 1.94 4.42 5.93 11.48 18.94 23.00 24.98 26.46 16.37 10.31 6.84 4.42 12.92 RELATIVE HUMIDITY (MEAN %) 72 53 56 41 38 33 36 32 44 53 54 55 47 RELATIVE HUMIDITY (MAX. %) 84 74 78 62 57 53 52 50 65 77 73 72 66 RELATIVE HUMIDITY (MIN. %) 61 38 41 30 27 22 25 22 30 36 41 42 35 RELATIVE HUMIDITY (MEAN% 03UTC) 83 74 76 62 56 52 52 48 65 73 73 72 66 RELATIVE HUMIDITY (MEAN% 09UTC) 64 41 46 33 30 25 28 25 34 41 43 45 38 RELATIVE HUMIDITY (MEAN% 15UTC) 75 54 56 41 37 33 35 31 43 61 60 61 49 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 50.5 0.8 40.9 0.3 20.7 1.7 4.1 0.4 12.2 16.9 0.8 1.0 150.3 DAYS WITH PRECIPITATION >=10 2 0 1 0 1 0 0 0 0 0 0 0 4 DAYS WITH PRECIPITATION >= 5 3 0 2 0 2 0 0 0 2 1 0 0 10 DAYS WITH PRECIPITATION >= 1 6 0 3 0 3 1 3 0 3 5 0 1 25 DAYS WITH PRECIPITATION 9 4 9 7 10 9 6 2 6 9 5 1 77 GREATEST DAILY PRECIPITATION 24.0 0.3 31.0 0.2 11.0 1.0 2.0 0.4 6.0 5.0 0.4 1.0 31.0 DAY 11 13 3 20 4 2 7 22 6 19 9 21 DAY WITH THUNDER STORM 0 0 2 0 1 4 0 0 2 2 0 0 11 DAYS WITH SNOW OR SLEET 4 2 2 1 0 0 0 0 0 0 0 0 9 DAYS WITH DUST 0 1 3 4 3 0 1 0 0 1 0 1 14 WIND DIRECTION (PREVAILING) 45 225 90 225 45 45 45 45 45 225 225 225 45 PREVAILING WIND SPEED(KNOTS) 5.6 6.9 8.0 11.7 8.2 8.0 8.2 7.6 6.3 5.7 5.1 4.2 6.8 PREVAILING WIND PERCENT 36.7 34.3 23.2 25.5 24.5 47.3 60.0 44.5 40.7 30.3 34.0 36.8 32.3 CALMS PERCENT OF WIND 0.7 1.4 1.9 0.7 0.6 2.0 0.0 3.2 4.7 12.9 2.7 6.5 3.1 NO. OF WIND OBSERVATION 150 140 155 153 155 150 155 155 150 155 150 155 1823 VECTOR WIND DIRECTION (MEAN) 92 207 83 215 95 59 51 60 63 122 201 253 71 VECTOR WIND MAGNITUDE(KNOTS) 2.2 1.1 2.2 2.0 1.4 4.9 7.2 4.4 3.5 0.5 0.8 0.7 1.8 WIND STEADINESES (MEAN %) 40.7 16.4 30.6 22.5 20.0 72.1 86.7 69.8 66.0 11.1 19.0 20.0 29.0 WIND SPEED (MEAN KNOTS) 5.4 6.7 7.2 8.9 7.0 6.8 8.3 6.3 5.3 4.5 4.2 3.5 6.2 FASTEST WIND DIRECTION 230 270 230 230 180 50 360 50 50 230 110 270 230 FASTEST WIND SPEED (KNOTS) 18 25 20 40 25 18 25 18 18 18 15 18 40 DAY 11 23 12 4 15 20 1 7 17 25 10 31 DAYS WITH SKY CLEAR (0-2)/8 3 11 9 10 7 18 24 28 20 9 13 15 167 DAYS WITH P.CLOUDY (3-6)/8 10 16 12 15 16 9 6 3 8 18 14 10 137 DAYS WITH CLOUDY (7-8)/8 17 1 10 5 8 3 1 0 2 4 3 6 60 DAYS WITH VISIBILITY =< 2 KM 5 1 3 1 1 0 0 0 0 0 0 0 11 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** 300.9 334.6 355.2 294.4 249.3 222.7 216.7 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1965 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 866.7 864.7 867.0 863.0 867.8 863.6 862.2 865.4 867.5 867.1 868.3 867.2 865.9 MAX. QFE PRESSURE IN HPA 874.6 873.8 875.6 871.2 877.8 870.4 867.2 872.0 873.1 875.1 873.5 873.0 877.8 DAY-HOUR 31- 6 1- 6 15- 3 25- 6 21- 6 3- 6 16- 6 9- 6 20- 6 5- 6 28- 6 4- 6 MIN. QFE PRESSURE IN HPA 851.8 852.3 858.2 851.3 860.0 856.3 854.6 861.3 863.5 852.7 861.5 861.1 851.3 DAY-HOUR 11- 9 9-12 24- 3 4- 3 2-15 18-15 11-15 3-15 21-15 25-12 9-12 24-12 MEAN QNH PRESSURE IN HPA 1018.6 1016.3 1019.0 1014.4 1019.8 1015.1 1013.4 1017.1 1019.5 1019.1 1020.5 1019.2 1017.7 MAX. QNH PRESSURE IN HPA 1027.6 1026.7 1028.8 1023.8 1031.3 1022.8 1019.2 1024.7 1025.9 1028.2 1026.4 1025.8 1031.3 DAY-HOUR 31- 6 1- 6 15- 3 25- 6 21- 6 3- 6 16- 6 9- 6 20- 6 5- 6 28- 6 4- 6 MIN. QNH PRESSURE IN HPA 1001.6 1002.2 1008.9 1001.1 1011.0 1006.8 1004.8 1012.5 1015.0 1002.7 1012.7 1012.2 1001.1 DAY-HOUR 11- 9 9-12 24- 3 4- 3 2-15 18-15 11-15 3-15 21-15 25-12 9-12 24-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 866.7 864.7 867.2 863.2 868.2 864.2 863.0 866.0 867.9 867.3 868.4 867.2 866.2 MAX. QFE PRESSURE IN HPA 873.7 872.5 875.6 870.2 877.1 870.3 867.1 871.4 872.4 874.3 872.5 872.4 877.1 DAY 31 1 15 25 21 3 16 9 20 5 28 4 MIN. QFE PRESSURE IN HPA 853.0 854.0 858.2 851.3 860.9 858.2 856.5 863.1 864.9 854.1 863.1 861.2 851.3 DAY 11 23 24 4 2 18 12 27 22 25 9 18 MEAN QNH PRESSURE IN HPA 1018.6 1016.4 1019.2 1014.7 1020.4 1015.8 1014.4 1017.9 1020.0 1019.3 1020.6 1019.2 1018.0 MAX. QNH PRESSURE IN HPA 1026.6 1025.2 1028.8 1022.6 1030.5 1022.7 1019.1 1024.0 1025.1 1027.3 1025.2 1025.1 1030.5 DAY 31 1 15 25 21 3 16 9 20 5 28 4 MIN. QNH PRESSURE IN HPA 1003.0 1004.2 1008.9 1001.1 1012.0 1008.9 1007.0 1014.5 1016.6 1004.3 1014.5 1012.4 1001.1 DAY 11 23 24 4 2 18 12 27 22 25 9 18 MEAN QFF PRESSURE IN HPA 1023.8 1019.3 1019.5 1011.5 1013.1 1006.9 1004.2 1008.2 1013.3 1015.6 1020.2 1022.2 1014.8 MAX. QFF PRESSURE IN HPA 1030.6 1029.5 1033.8 1019.8 1026.7 1014.3 1009.5 1016.1 1018.3 1026.4 1026.0 1028.5 1033.8 DAY 31 1 15 9 21 3 2 9 30 29 28 23 MIN. QFF PRESSURE IN HPA 1016.2 1005.5 1007.9 997.1 1004.0 998.0 996.4 1002.9 1007.8 999.8 1011.3 1013.2 996.4 DAY 27 23 24 4 2 18 12 27 1 25 9 18 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1965 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 867.4 865.7 868.0 864.1 868.8 864.6 863.2 866.5 868.7 868.3 869.4 868.3 866.9 MAX. QFE PRESSURE IN HPA 874.6 873.8 875.6 871.2 877.8 870.4 867.2 872.0 873.1 875.1 873.5 873.0 877.8 DAY 31 1 16 25 21 3 16 9 20 5 28 4 MIN. QFE PRESSURE IN HPA 852.1 854.3 859.0 852.4 861.5 859.0 856.8 863.2 866.1 855.1 863.6 862.7 852.1 DAY 11 23 24 4 2 18 12 1 12 25 9 18 MEAN QNH PRESSURE IN HPA 1019.5 1017.5 1020.1 1015.7 1021.0 1016.2 1014.7 1018.4 1020.9 1020.5 1021.7 1020.4 1018.9 MAX. QNH PRESSURE IN HPA 1027.6 1026.7 1028.8 1023.8 1031.3 1022.8 1019.2 1024.7 1025.9 1028.2 1026.4 1025.8 1031.3 DAY 31 1 16 25 21 3 16 9 20 5 28 4 MIN. QNH PRESSURE IN HPA 1002.0 1004.5 1009.9 1002.3 1012.7 1009.9 1007.3 1014.6 1017.9 1005.4 1015.1 1014.1 1002.0 DAY 11 23 24 4 2 18 12 1 12 25 9 18 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 866.7 865.0 867.4 863.4 868.1 863.7 862.3 865.6 867.7 867.3 868.4 867.3 866.1 MAX. QFE PRESSURE IN HPA 874.3 872.7 874.7 870.8 876.5 868.9 866.4 870.6 871.8 873.6 872.2 872.0 876.5 DAY 31 1 16 25 21 3 15 9 20 5 5 4 MIN. QFE PRESSURE IN HPA 851.8 853.9 859.2 852.8 861.4 858.1 856.3 862.8 864.9 853.1 861.8 861.5 851.8 DAY 11 23 24 4 2 18 12 1 17 25 9 24 MEAN QNH PRESSURE IN HPA 1018.7 1016.7 1019.4 1014.9 1020.3 1015.3 1013.6 1017.4 1019.8 1019.3 1020.6 1019.3 1017.9 MAX. QNH PRESSURE IN HPA 1027.3 1025.5 1027.8 1023.3 1029.8 1021.1 1018.3 1023.1 1024.4 1026.5 1024.9 1024.7 1029.8 DAY 31 1 16 25 21 3 15 9 20 5 5 4 MIN. QNH PRESSURE IN HPA 1001.6 1004.0 1010.1 1002.8 1012.6 1008.8 1006.8 1014.2 1016.6 1003.1 1013.0 1012.7 1001.6 DAY 11 23 24 4 2 18 12 1 17 25 9 24 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 866.0 863.9 866.1 862.2 866.9 862.7 861.2 864.4 866.5 866.2 867.5 866.5 865.0 MAX. QFE PRESSURE IN HPA 873.5 871.6 872.8 869.1 875.5 868.7 866.2 869.9 870.2 871.7 871.1 870.9 875.5 DAY 31 1 16 25 20 2 15 9 30 5 28 4 MIN. QFE PRESSURE IN HPA 852.0 852.3 859.4 852.6 860.4 856.7 855.1 861.8 863.8 852.7 861.5 861.1 852.0 DAY 11 9 23 4 2 17 12 1 12 25 9 24 MEAN QNH PRESSURE IN HPA 1017.8 1015.4 1018.0 1013.5 1018.9 1014.1 1012.3 1016.0 1018.4 1018.1 1019.6 1018.4 1016.7 MAX. QNH PRESSURE IN HPA 1026.4 1024.2 1025.6 1021.4 1028.7 1020.9 1018.1 1022.3 1022.6 1024.3 1023.6 1023.4 1028.7 DAY 31 1 16 25 20 2 15 9 30 5 28 4 MIN. QNH PRESSURE IN HPA 1001.9 1002.2 1010.3 1002.6 1011.4 1007.2 1005.4 1013.0 1015.3 1002.7 1012.7 1012.2 1001.9 DAY 11 9 23 4 2 17 12 1 12 25 9 24 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1965 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 866.5 864.2 866.5 862.4 866.8 862.7 861.1 864.4 866.7 866.5 867.8 866.8 865.2 MAX. QFE PRESSURE IN HPA 874.0 871.4 873.4 869.0 876.1 868.7 866.4 869.9 870.0 872.2 871.4 871.4 876.1 DAY 31 1 16 25 20 2 15 9 30 28 28 31 MIN. QFE PRESSURE IN HPA 853.6 852.7 858.7 854.0 860.0 856.3 854.6 861.3 863.5 853.4 861.8 861.5 852.7 DAY 11 9 23 4 2 18 11 3 21 25 9 17 MEAN QNH PRESSURE IN HPA 1018.4 1015.8 1018.4 1013.7 1018.8 1014.1 1012.3 1016.0 1018.6 1018.4 1019.9 1018.8 1016.9 MAX. QNH PRESSURE IN HPA 1027.0 1024.0 1026.3 1021.3 1029.3 1020.9 1018.3 1022.3 1022.4 1024.9 1024.0 1024.0 1029.3 DAY 31 1 16 25 20 2 15 9 30 28 28 31 MIN. QNH PRESSURE IN HPA 1003.7 1002.7 1009.5 1004.2 1011.0 1006.8 1004.8 1012.5 1015.0 1003.5 1013.0 1012.7 1002.7 DAY 11 9 23 4 2 18 11 3 21 25 9 17 MEAN QFF PRESSURE IN HPA 1022.9 1018.6 1018.5 1010.3 1011.4 1005.2 1002.1 1006.3 1012.0 1014.5 1019.5 1021.7 1013.6 MAX. QFF PRESSURE IN HPA 1030.8 1028.2 1031.6 1020.0 1024.4 1012.0 1007.8 1015.2 1018.1 1024.3 1025.1 1028.0 1031.6 DAY 31 1 16 9 20 2 15 9 30 28 24 22 MIN. QFF PRESSURE IN HPA 1005.7 1003.4 1007.3 1001.6 1003.3 995.8 994.1 1001.6 1007.3 999.5 1010.2 1013.5 994.1 DAY 11 9 12 4 2 18 12 3 12 25 9 17 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1966 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.5 8.5 9.6 15.6 20.2 26.3 27.0 27.0 22.7 14.6 10.4 5.5 16.2 MINIMUN AIR TEMPERATURE (C) -0.2 1.5 2.7 7.5 11.0 17.0 17.7 17.8 13.2 6.6 0.5 -1.4 7.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 1 3 1 1 0 0 0 6 DAYS WITH MINIMUM TEMP. <=-4 1 0 1 0 0 0 0 0 0 0 3 5 10 DAYS WITH FREEZING MIN.<= 0 19 9 10 1 0 0 0 0 0 2 14 25 80 TEMPERATURE RECORDS LOWEST(C) -4.0 -2.0 -4.0 0.0 6.0 12.0 11.0 14.0 6.0 0.0 -5.0 -5.0 -5.0 DAY 1 7 3 5 19 1 3 11 5 18 27 24 MAXIMUM AIR TEMPERATURE (C) 11.2 13.5 14.8 21.0 25.6 31.7 32.0 32.7 28.7 20.3 16.4 10.7 21.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 2 23 25 29 9 0 0 0 88 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 15.0 19.0 24.0 28.0 30.0 37.0 37.0 36.0 34.0 27.0 21.0 14.0 37.0 DAY 9 27 12 20 24 11 24 23 10 1 1 12 DIF. BETWEEN (MAX.-MIN.) (C) 11.4 12.0 12.1 13.5 14.6 14.7 14.3 14.9 15.5 13.7 15.9 12.1 13.8 MEAN DAILY TEMP. (MDT) (C) 5.5 7.5 8.8 14.2 18.3 24.4 24.9 25.2 21.0 13.5 8.5 4.7 14.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 2.0 102.5 120.0 131.5 25.0 0.0 0.0 0.0 381.0 HEATING DEG. DAYS(BASE 18 0C) 387.5 294.5 286.0 121.0 25.5 0.0 0.0 0.0 1.0 142.0 285.5 413.0 1956.0 DEWPOINT (MEAN C) -1.1 -1.4 -1.5 3.4 7.1 8.8 10.3 10.4 7.8 5.7 -1.9 -4.3 3.6 MIXING RATIO (G/KG) 4.15 4.10 4.16 5.78 7.55 8.47 9.35 9.39 7.85 6.75 3.99 3.28 6.24 VAPOUR PRESSURE (HPA) 5.75 5.66 5.72 7.94 10.38 11.59 12.75 12.83 10.78 9.33 5.57 4.55 8.57 SATURATION DEF. (HPA) 4.28 5.85 6.93 10.69 14.28 23.78 24.00 24.08 18.03 8.04 7.82 4.81 12.72 RELATIVE HUMIDITY (MEAN %) 61 53 49 47 46 36 37 37 41 58 45 52 47 RELATIVE HUMIDITY (MAX. %) 78 72 70 69 66 53 52 53 60 79 68 73 66 RELATIVE HUMIDITY (MIN. %) 48 40 37 34 33 25 29 26 29 43 31 38 34 RELATIVE HUMIDITY (MEAN% 03UTC) 77 71 70 68 65 53 52 53 60 79 68 72 66 RELATIVE HUMIDITY (MEAN% 09UTC) 54 45 42 38 37 29 29 29 31 46 34 42 38 RELATIVE HUMIDITY (MEAN% 15UTC) 63 51 46 44 46 34 38 38 43 62 48 51 47 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 18.5 15.6 61.8 12.1 28.6 0.0 4.0 2.4 0.5 20.3 0.0 1.0 164.8 DAYS WITH PRECIPITATION >=10 1 0 2 0 1 0 0 0 0 0 0 0 4 DAYS WITH PRECIPITATION >= 5 1 2 2 1 2 0 0 0 0 1 0 0 9 DAYS WITH PRECIPITATION >= 1 4 2 5 3 8 0 1 1 0 5 0 1 30 DAYS WITH PRECIPITATION 6 6 8 7 12 0 2 2 2 12 0 2 59 GREATEST DAILY PRECIPITATION 13.0 9.0 30.0 7.0 10.0 0.0 4.0 2.0 0.5 5.3 0.0 1.0 30.0 DAY 13 3 1 23 29 ** 18 25 30 3 ** 21 DAY WITH THUNDER STORM 0 0 1 2 4 0 1 1 2 1 0 0 12 DAYS WITH SNOW OR SLEET 0 0 1 0 0 0 0 0 0 0 0 0 1 DAYS WITH DUST 0 0 0 1 4 4 1 1 1 0 0 0 12 WIND DIRECTION (PREVAILING) 225 225 225 45 45 45 45 45 45 45 225 45 45 PREVAILING WIND SPEED(KNOTS) 4.3 5.7 5.9 6.7 6.7 8.3 10.0 7.7 8.1 5.7 3.8 3.1 6.7 PREVAILING WIND PERCENT 30.3 32.1 27.1 30.0 36.1 48.7 54.2 54.8 44.7 28.4 24.7 29.7 35.0 CALMS PERCENT OF WIND 11.0 2.1 0.6 0.7 0.0 0.7 0.6 0.6 1.3 0.6 1.3 1.9 1.8 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 85 219 235 85 65 63 53 56 59 66 88 142 62 VECTOR WIND MAGNITUDE(KNOTS) 0.1 0.7 0.8 1.3 3.0 5.4 7.1 5.5 3.6 1.9 1.1 0.2 2.3 WIND STEADINESES (MEAN %) 3.0 14.3 14.5 20.6 49.2 72.0 84.5 82.1 57.1 38.0 28.9 5.6 41.1 WIND SPEED (MEAN KNOTS) 3.3 4.9 5.5 6.3 6.1 7.5 8.4 6.7 6.3 5.0 3.8 3.6 5.6 FASTEST WIND DIRECTION 230 310 310 50 230 360 50 50 50 50 70 230 50 FASTEST WIND SPEED (KNOTS) 9 16 20 16 16 18 22 20 18 16 14 12 22 DAY 5 19 21 4 3 8 7 10 3 4 19 21 DAYS WITH SKY CLEAR (0-2)/8 8 8 9 4 6 24 20 22 17 10 21 11 160 DAYS WITH P.CLOUDY (3-6)/8 15 10 15 13 17 5 9 9 11 10 6 14 134 DAYS WITH CLOUDY (7-8)/8 8 10 7 13 8 1 2 0 2 11 3 6 71 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 0 2 0 0 0 0 0 0 2 DURATION OF SUNSHINE HOURS 193.0 194.8 229.8 214.1 255.3 339.9 325.8 341.6 269.7 209.0 268.8 210.1 3051.9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1966 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 867.9 864.3 862.9 863.5 865.6 862.9 861.9 862.9 866.0 869.0 873.5 866.4 865.6 MAX. QFE PRESSURE IN HPA 875.2 871.4 870.6 872.2 870.9 870.0 868.2 867.5 870.9 875.4 880.1 875.4 880.1 DAY-HOUR 1- 6 12- 6 3- 6 27- 6 10- 6 7- 6 11- 6 16- 6 16- 6 9- 9 23- 6 7- 6 MIN. QFE PRESSURE IN HPA 860.3 856.0 844.8 855.4 860.7 856.4 856.3 858.1 859.7 861.1 866.2 856.9 844.8 DAY-HOUR 27-12 3- 3 20- 3 13-12 4-15 13-15 16-15 4-12 8-15 15-12 30-15 12-12 MEAN QNH PRESSURE IN HPA 1020.1 1015.9 1014.3 1014.9 1017.4 1014.3 1013.2 1014.3 1017.8 1021.3 1026.4 1018.3 1017.3 MAX. QNH PRESSURE IN HPA 1028.3 1024.0 1023.1 1024.9 1023.4 1022.4 1020.3 1019.5 1023.4 1028.6 1033.9 1028.6 1033.9 DAY-HOUR 1- 6 12- 6 3- 6 27- 6 10- 6 7- 6 11- 6 16- 6 16- 6 9- 9 23- 6 7- 6 MIN. QNH PRESSURE IN HPA 1011.3 1006.4 993.7 1005.7 1011.8 1006.9 1006.8 1008.8 1010.7 1012.2 1018.1 1007.5 993.7 DAY-HOUR 27-12 3- 3 20- 3 13-12 4-15 13-15 16-15 4-12 8-15 15-12 30-15 12-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 868.1 864.4 862.8 863.8 866.2 863.8 862.7 863.6 866.6 869.1 873.7 866.4 865.9 MAX. QFE PRESSURE IN HPA 874.1 870.3 870.3 872.0 869.8 869.7 868.0 866.8 870.2 874.2 879.2 874.2 879.2 DAY 1 12 3 27 10 7 11 16 16 10 23 7 MIN. QFE PRESSURE IN HPA 862.5 856.0 844.8 855.8 861.5 859.0 857.4 860.0 862.2 862.7 868.1 858.4 844.8 DAY 27 3 20 14 26 27 17 4 8 15 16 12 MEAN QNH PRESSURE IN HPA 1020.2 1016.1 1014.2 1015.3 1018.1 1015.3 1014.1 1015.1 1018.5 1021.3 1026.6 1018.2 1017.7 MAX. QNH PRESSURE IN HPA 1027.1 1022.7 1022.7 1024.7 1022.2 1022.1 1020.1 1018.7 1022.6 1027.2 1032.9 1027.2 1032.9 DAY 1 12 3 27 10 7 11 16 16 10 23 7 MIN. QNH PRESSURE IN HPA 1013.8 1006.4 993.7 1006.2 1012.7 1009.9 1008.0 1011.0 1013.5 1014.1 1020.2 1009.2 993.7 DAY 27 3 20 14 26 27 17 4 8 15 16 12 MEAN QFF PRESSURE IN HPA 1021.8 1016.4 1013.7 1011.7 1012.1 1006.0 1004.2 1005.5 1011.5 1018.7 1027.5 1020.9 1014.2 MAX. QFF PRESSURE IN HPA 1030.6 1023.7 1026.6 1023.1 1018.8 1012.3 1010.5 1010.8 1017.5 1028.4 1034.1 1031.0 1034.1 DAY 1 23 3 5 10 7 8 16 22 18 23 30 MIN. QFF PRESSURE IN HPA 1013.5 1006.7 991.4 1002.2 1005.0 999.0 997.3 1000.1 1005.0 1010.0 1022.0 1010.1 991.4 DAY 27 3 20 14 26 14 17 4 8 15 17 13 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1966 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 868.9 865.4 863.8 864.4 866.7 864.1 863.0 864.1 867.2 870.1 874.7 867.4 866.6 MAX. QFE PRESSURE IN HPA 875.2 871.4 870.6 872.2 870.9 870.0 868.2 867.5 870.9 875.3 880.1 875.4 880.1 DAY 1 12 3 27 10 7 11 16 16 9 23 7 MIN. QFE PRESSURE IN HPA 862.6 858.8 846.4 856.9 862.9 859.5 858.5 860.1 862.6 863.1 868.7 858.6 846.4 DAY 27 3 20 14 26 15 17 4 8 15 30 12 MEAN QNH PRESSURE IN HPA 1021.1 1017.2 1015.3 1016.1 1018.6 1015.6 1014.4 1015.6 1019.2 1022.5 1027.8 1019.4 1018.6 MAX. QNH PRESSURE IN HPA 1028.3 1024.0 1023.1 1024.9 1023.4 1022.4 1020.3 1019.5 1023.4 1028.4 1033.9 1028.6 1033.9 DAY 1 12 3 27 10 7 11 16 16 9 23 7 MIN. QNH PRESSURE IN HPA 1014.0 1009.6 995.5 1007.5 1014.3 1010.4 1009.3 1011.1 1014.0 1014.5 1020.9 1009.4 995.5 DAY 27 3 20 14 26 15 17 4 8 15 30 12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 868.2 864.6 863.4 863.7 865.8 863.2 861.9 863.0 866.1 869.2 873.6 866.5 865.8 MAX. QFE PRESSURE IN HPA 873.9 871.2 870.0 871.4 870.0 869.2 866.9 866.4 870.3 875.4 879.0 874.2 879.0 DAY 1 12 3 5 10 6 11 16 15 9 2 7 MIN. QFE PRESSURE IN HPA 861.4 859.0 846.9 857.0 862.0 858.4 858.4 858.9 861.4 862.3 866.8 857.0 846.9 DAY 27 10 20 14 26 14 5 4 8 15 30 12 MEAN QNH PRESSURE IN HPA 1020.3 1016.3 1014.9 1015.3 1017.6 1014.7 1013.2 1014.4 1018.0 1021.5 1026.5 1018.4 1017.6 MAX. QNH PRESSURE IN HPA 1026.8 1023.8 1022.4 1024.0 1022.4 1021.5 1018.9 1018.3 1022.7 1028.6 1032.7 1027.2 1032.7 DAY 1 12 3 5 10 6 11 16 15 9 2 7 MIN. QNH PRESSURE IN HPA 1012.6 1009.9 996.0 1007.6 1013.3 1009.2 1009.2 1009.7 1012.6 1013.6 1018.7 1007.6 996.0 DAY 27 10 20 14 26 14 5 4 8 15 30 12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 867.2 863.4 862.3 862.6 864.8 862.0 860.9 861.9 865.0 868.3 872.8 865.7 864.7 MAX. QFE PRESSURE IN HPA 872.1 870.0 869.1 870.5 869.2 868.2 866.2 865.5 869.2 874.5 877.9 873.7 877.9 DAY 1 12 3 26 10 6 11 18 15 9 22 7 MIN. QFE PRESSURE IN HPA 860.3 856.8 847.3 855.4 861.2 856.8 857.1 858.1 860.1 861.1 866.4 856.9 847.3 DAY 27 2 20 13 26 14 16 4 8 15 30 12 MEAN QNH PRESSURE IN HPA 1019.2 1014.9 1013.6 1014.0 1016.4 1013.3 1012.0 1013.2 1016.7 1020.4 1025.6 1017.5 1016.4 MAX. QNH PRESSURE IN HPA 1024.8 1022.4 1021.4 1023.0 1021.5 1020.3 1018.1 1017.3 1021.5 1027.5 1031.4 1026.6 1031.4 DAY 1 12 3 26 10 6 11 18 15 9 22 7 MIN. QNH PRESSURE IN HPA 1011.3 1007.3 996.5 1005.7 1012.4 1007.3 1007.7 1008.8 1011.1 1012.2 1018.3 1007.5 996.5 DAY 27 2 20 13 26 14 16 4 8 15 30 12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1966 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 867.4 863.7 862.4 862.8 864.7 861.7 861.1 861.8 865.1 868.4 873.0 866.0 864.8 MAX. QFE PRESSURE IN HPA 871.9 870.3 868.6 870.4 868.8 868.4 866.5 865.4 869.4 874.5 878.4 873.7 878.4 DAY 1 12 3 26 10 6 11 16 15 9 22 7 MIN. QFE PRESSURE IN HPA 861.0 856.3 850.2 855.4 860.7 856.4 856.3 858.4 859.7 861.3 866.2 857.7 850.2 DAY 27 2 20 13 4 13 16 4 8 15 30 12 MEAN QNH PRESSURE IN HPA 1019.4 1015.2 1013.8 1014.2 1016.3 1012.9 1012.3 1013.1 1016.8 1020.6 1025.8 1017.9 1016.5 MAX. QNH PRESSURE IN HPA 1024.6 1022.7 1020.8 1022.8 1021.0 1020.6 1018.4 1017.1 1021.7 1027.5 1032.0 1026.6 1032.0 DAY 1 12 3 26 10 6 11 16 15 9 22 7 MIN. QNH PRESSURE IN HPA 1012.1 1006.8 999.8 1005.7 1011.8 1006.9 1006.8 1009.2 1010.7 1012.5 1018.1 1008.4 999.8 DAY 27 2 20 13 4 13 16 4 8 15 30 12 MEAN QFF PRESSURE IN HPA 1021.0 1015.3 1013.2 1010.5 1010.2 1003.6 1002.3 1003.3 1009.8 1018.0 1026.7 1020.5 1012.9 MAX. QFF PRESSURE IN HPA 1028.2 1022.8 1023.8 1022.9 1017.2 1011.0 1009.2 1008.9 1015.3 1025.9 1033.4 1030.7 1033.4 DAY 1 12 3 5 9 6 8 16 21 18 22 30 MIN. QFF PRESSURE IN HPA 1011.8 1005.3 999.5 1001.7 1004.4 996.0 996.7 998.2 1001.6 1008.6 1020.9 1009.1 996.0 DAY 27 2 20 13 16 13 5 4 8 15 30 12 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1967 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.6 2.3 8.7 13.3 20.6 24.8 27.4 27.4 22.7 15.4 10.6 3.3 14.9 MINIMUN AIR TEMPERATURE (C) -4.4 -3.5 0.7 5.0 10.9 14.2 18.7 18.2 13.0 6.9 3.6 -3.3 6.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 4 3 0 0 0 0 7 DAYS WITH MINIMUM TEMP. <=-4 20 14 3 3 0 0 0 0 0 0 2 12 54 DAYS WITH FREEZING MIN.<= 0 28 26 17 5 0 0 0 0 0 0 8 28 112 TEMPERATURE RECORDS LOWEST(C) -9.0 -11.0 -7.0 -7.0 5.0 6.0 16.0 15.0 6.0 1.0 -4.0 -9.0 -11.0 DAY 23 3 1 3 2 7 4 25 26 23 29 25 MAXIMUM AIR TEMPERATURE (C) 7.8 6.8 14.3 18.7 26.1 29.8 32.9 33.5 29.1 22.0 15.9 8.3 20.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 7 18 28 31 15 0 0 0 99 DAYS WITH MAXIMUM TEMP. <= 0 1 1 0 0 0 0 0 0 0 0 0 0 2 TEMPERATURE RECORDS HIGHEST(C) 16.0 16.0 21.0 28.0 33.0 34.0 39.0 37.0 36.0 27.0 23.0 14.0 39.0 DAY 19 24 7 24 14 17 8 3 5 11 1 18 DIF. BETWEEN (MAX.-MIN.) (C) 12.2 10.3 13.6 13.7 15.2 15.6 14.2 15.3 16.1 15.1 12.3 11.6 13.7 MEAN DAILY TEMP. (MDT) (C) 1.7 1.6 7.5 11.8 18.5 22.0 25.8 25.8 21.0 14.4 9.8 2.5 13.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 17.0 50.5 148.0 150.0 45.5 0.0 0.0 0.0 411.0 HEATING DEG. DAYS(BASE 18 0C) 505.5 458.0 325.5 186.0 38.0 6.0 0.0 0.0 14.0 115.0 247.0 481.0 2376.0 DEWPOINT (MEAN C) -6.6 -5.8 -4.5 0.3 5.4 6.2 10.9 9.4 8.1 5.5 1.8 -6.1 2.1 MIXING RATIO (G/KG) 2.76 3.00 3.26 4.72 6.74 7.11 9.74 8.84 8.01 6.64 5.21 2.90 5.74 VAPOUR PRESSURE (HPA) 3.83 4.14 4.49 6.48 9.26 9.75 13.26 12.08 10.98 9.18 7.20 4.02 7.89 SATURATION DEF. (HPA) 3.96 3.38 7.43 10.09 16.25 22.70 24.49 25.81 18.22 9.31 6.36 4.09 12.67 RELATIVE HUMIDITY (MEAN %) 53 58 42 45 40 32 38 35 42 55 57 52 46 RELATIVE HUMIDITY (MAX. %) 70 77 63 65 59 48 56 52 61 76 79 70 65 RELATIVE HUMIDITY (MIN. %) 39 44 29 32 29 24 28 24 30 39 41 40 33 RELATIVE HUMIDITY (MEAN% 03UTC) 69 75 62 64 58 48 56 51 61 75 78 70 64 RELATIVE HUMIDITY (MEAN% 09UTC) 44 48 33 37 32 26 30 27 32 42 45 43 37 RELATIVE HUMIDITY (MEAN% 15UTC) 53 59 40 42 37 31 37 33 43 64 57 53 46 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 7.0 33.0 1.7 6.0 8.9 0.0 0.0 0.0 0.4 30.0 2.3 1.3 90.6 DAYS WITH PRECIPITATION >=10 0 2 0 0 0 0 0 0 0 1 0 0 3 DAYS WITH PRECIPITATION >= 5 1 3 0 0 1 0 0 0 0 2 0 0 7 DAYS WITH PRECIPITATION >= 1 2 5 1 4 1 0 0 0 0 5 2 1 21 DAYS WITH PRECIPITATION 3 10 7 14 9 0 0 1 2 10 6 3 65 GREATEST DAILY PRECIPITATION 6.0 12.0 1.0 2.0 8.2 0.0 0.0 0.0 0.4 16.0 1.0 1.3 16.0 DAY 31 14 14 30 18 ** ** ** 21 22 9 19 DAY WITH THUNDER STORM 0 0 0 1 1 0 0 0 0 1 0 0 3 DAYS WITH SNOW OR SLEET 2 4 0 1 0 0 0 0 0 0 0 0 7 DAYS WITH DUST 0 0 2 4 3 7 10 6 1 0 0 0 33 WIND DIRECTION (PREVAILING) 225 225 225 225 90 45 45 45 45 45 225 225 45 PREVAILING WIND SPEED(KNOTS) 5.1 4.6 7.7 8.0 6.8 8.3 9.6 7.6 6.5 4.0 4.6 5.9 6.3 PREVAILING WIND PERCENT 36.1 27.1 28.4 29.3 27.1 40.7 53.5 48.4 34.0 28.4 27.3 34.2 31.1 CALMS PERCENT OF WIND 0.0 1.4 0.0 0.0 0.0 0.7 0.0 0.0 0.0 1.3 0.7 0.0 0.3 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 229 88 222 157 79 67 63 69 73 68 148 225 74 VECTOR WIND MAGNITUDE(KNOTS) 1.0 1.0 0.9 0.9 2.1 5.2 7.9 6.0 3.6 1.2 0.3 1.1 2.0 WIND STEADINESES (MEAN %) 25.0 20.8 14.1 14.1 37.5 69.3 89.8 83.3 61.0 30.8 7.3 25.0 34.5 WIND SPEED (MEAN KNOTS) 4.0 4.8 6.4 6.4 5.6 7.5 8.8 7.2 5.9 3.9 4.1 4.4 5.8 FASTEST WIND DIRECTION 360 270 270 230 90 50 50 50 50 90 230 230 360 FASTEST WIND SPEED (KNOTS) 20 18 18 18 18 18 18 18 15 18 15 18 20 DAY 22 27 24 4 3 14 15 5 12 14 25 22 DAYS WITH SKY CLEAR (0-2)/8 14 10 13 5 9 26 26 29 22 15 9 16 194 DAYS WITH P.CLOUDY (3-6)/8 14 8 13 14 18 3 5 2 8 12 15 10 122 DAYS WITH CLOUDY (7-8)/8 3 10 5 11 4 1 0 0 0 4 6 5 49 DAYS WITH VISIBILITY =< 2 KM 1 2 0 0 0 0 0 0 0 0 0 0 3 DURATION OF SUNSHINE HOURS 224.5 178.2 258.6 200.8 279.6 348.8 337.8 347.9 288.6 245.4 200.7 202.1 3113.0 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1967 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 867.2 864.1 861.3 862.2 865.0 862.8 860.8 862.2 864.5 869.7 867.4 865.8 864.4 MAX. QFE PRESSURE IN HPA 874.8 874.5 872.1 870.0 873.6 868.7 867.7 867.4 870.6 877.3 872.4 874.3 877.3 DAY-HOUR 7- 6 28- 6 1- 6 13- 6 3- 6 26- 6 15- 6 16- 6 25- 6 15- 6 6- 6 12- 6 MIN. QFE PRESSURE IN HPA 857.3 853.0 849.5 851.2 856.6 853.9 855.5 858.3 856.5 862.2 861.4 853.2 849.5 DAY-HOUR 21-15 24-15 24-15 26-12 31-12 20-12 9-15 19-15 18-15 1-15 25-12 23-12 MEAN QNH PRESSURE IN HPA 1019.2 1015.6 1012.5 1013.5 1016.7 1014.1 1011.9 1013.5 1016.1 1022.0 1019.4 1017.6 1016.0 MAX. QNH PRESSURE IN HPA 1027.9 1027.5 1024.8 1022.4 1026.5 1020.9 1019.8 1019.4 1023.1 1030.7 1025.1 1027.3 1030.7 DAY-HOUR 7- 6 28- 6 1- 6 13- 6 3- 6 26- 6 15- 6 16- 6 25- 6 15- 6 6- 6 12- 6 MIN. QNH PRESSURE IN HPA 1007.9 1003.0 999.0 1001.0 1007.1 1004.0 1005.9 1009.1 1007.0 1013.5 1012.6 1003.2 999.0 DAY-HOUR 21-15 24-15 24-15 26-12 31-12 20-12 9-15 19-15 18-15 1-15 25-12 23-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 867.3 863.9 861.6 862.6 865.8 863.5 861.8 863.0 865.1 869.8 867.4 865.7 864.8 MAX. QFE PRESSURE IN HPA 874.2 873.3 871.7 869.3 872.8 868.6 867.5 866.4 869.5 875.8 871.3 873.5 875.8 DAY 7 28 1 13 3 26 15 16 25 15 6 12 MIN. QFE PRESSURE IN HPA 858.9 856.7 850.7 852.6 860.4 856.8 856.4 860.0 859.2 863.6 863.0 856.6 850.7 DAY 22 15 23 25 31 21 10 19 18 1 25 23 MEAN QNH PRESSURE IN HPA 1019.3 1015.4 1012.8 1013.9 1017.6 1015.0 1013.0 1014.4 1016.8 1022.1 1019.5 1017.5 1016.4 MAX. QNH PRESSURE IN HPA 1027.2 1026.2 1024.3 1021.6 1025.6 1020.8 1019.5 1018.3 1021.8 1029.0 1023.9 1026.4 1029.0 DAY 7 28 1 13 3 26 15 16 25 15 6 12 MIN. QNH PRESSURE IN HPA 1009.7 1007.2 1000.4 1002.6 1011.4 1007.3 1006.9 1011.0 1010.1 1015.1 1014.4 1007.1 1000.4 DAY 22 15 23 25 31 21 10 19 18 1 25 23 MEAN QFF PRESSURE IN HPA 1023.6 1019.4 1013.4 1011.8 1011.5 1006.5 1002.9 1004.5 1009.9 1019.6 1019.0 1021.4 1013.6 MAX. QFF PRESSURE IN HPA 1033.0 1032.5 1030.1 1022.4 1021.2 1015.7 1009.9 1009.0 1018.7 1029.1 1024.0 1030.3 1033.0 DAY 7 4 1 4 3 7 15 25 26 15 29 12 MIN. QFF PRESSURE IN HPA 1010.7 1008.0 996.8 994.8 1001.5 996.7 995.6 1000.5 1003.1 1009.8 1012.2 1009.8 994.8 DAY 22 25 23 25 31 21 9 5 7 1 25 23 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1967 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 868.5 865.1 862.6 863.4 866.2 863.9 862.0 863.4 865.9 870.7 868.4 866.9 865.6 MAX. QFE PRESSURE IN HPA 874.8 874.5 872.1 870.0 873.6 868.7 867.7 867.4 870.6 877.3 872.4 874.3 877.3 DAY 7 28 1 13 3 26 15 16 25 15 6 12 MIN. QFE PRESSURE IN HPA 860.3 857.4 851.0 853.0 860.2 857.2 856.6 860.4 859.7 864.6 863.4 856.5 851.0 DAY 21 15 23 25 31 20 10 5 18 3 25 23 MEAN QNH PRESSURE IN HPA 1020.6 1016.8 1013.9 1014.9 1018.0 1015.5 1013.2 1014.8 1017.7 1023.2 1020.6 1018.9 1017.4 MAX. QNH PRESSURE IN HPA 1027.9 1027.5 1024.8 1022.4 1026.5 1020.9 1019.8 1019.4 1023.1 1030.7 1025.1 1027.3 1030.7 DAY 7 28 1 13 3 26 15 16 25 15 6 12 MIN. QNH PRESSURE IN HPA 1011.3 1008.0 1000.7 1003.0 1011.2 1007.8 1007.1 1011.4 1010.7 1016.2 1014.9 1007.0 1000.7 DAY 21 15 23 25 31 20 10 5 18 3 25 23 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 867.3 864.5 861.7 862.5 865.2 863.0 861.0 862.3 864.7 869.8 867.3 865.7 864.6 MAX. QFE PRESSURE IN HPA 874.0 873.9 871.4 868.5 872.5 868.0 866.7 865.9 869.5 876.7 871.6 872.7 876.7 DAY 6 28 1 11 3 2 15 16 25 15 6 12 MIN. QFE PRESSURE IN HPA 858.9 857.0 850.8 852.0 859.2 855.7 856.2 859.3 858.2 863.7 861.8 855.0 850.8 DAY 21 15 24 26 28 20 10 5 18 1 25 23 MEAN QNH PRESSURE IN HPA 1019.3 1016.2 1012.9 1013.8 1016.9 1014.5 1012.1 1013.6 1016.4 1022.2 1019.3 1017.5 1016.2 MAX. QNH PRESSURE IN HPA 1027.0 1026.8 1024.0 1020.7 1025.2 1020.1 1018.6 1017.7 1021.8 1030.0 1024.2 1025.5 1030.0 DAY 6 28 1 11 3 2 15 16 25 15 6 12 MIN. QNH PRESSURE IN HPA 1009.7 1007.6 1000.5 1001.9 1010.1 1006.1 1006.7 1010.2 1008.9 1015.2 1013.0 1005.3 1000.5 DAY 21 15 24 26 28 20 10 5 18 1 25 23 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 866.4 863.2 860.4 861.3 864.0 861.8 859.7 861.2 863.4 868.9 866.6 865.0 863.5 MAX. QFE PRESSURE IN HPA 873.4 872.9 870.0 867.3 870.5 866.6 865.7 864.8 868.5 876.0 871.7 871.4 876.0 DAY 6 28 3 12 3 26 15 15 25 15 9 12 MIN. QFE PRESSURE IN HPA 857.6 855.5 849.9 851.2 856.6 853.9 855.5 858.5 856.6 862.3 861.4 853.2 849.9 DAY 21 24 24 26 31 20 10 5 18 1 25 23 MEAN QNH PRESSURE IN HPA 1018.3 1014.7 1011.4 1012.4 1015.5 1013.1 1010.7 1012.3 1014.9 1021.2 1018.6 1016.6 1015.0 MAX. QNH PRESSURE IN HPA 1026.3 1025.7 1022.4 1019.3 1023.0 1018.5 1017.5 1016.5 1020.7 1029.2 1024.3 1024.0 1029.2 DAY 6 28 3 12 3 26 15 15 25 15 9 12 MIN. QNH PRESSURE IN HPA 1008.3 1005.9 999.5 1001.0 1007.1 1004.0 1005.9 1009.3 1007.1 1013.6 1012.6 1003.2 999.5 DAY 21 24 24 26 31 20 10 5 18 1 25 23 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1967 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 866.7 863.5 860.4 861.4 863.9 861.5 859.5 861.1 863.4 869.3 867.0 865.5 863.6 MAX. QFE PRESSURE IN HPA 873.5 872.7 869.6 868.2 870.1 866.3 865.1 864.6 868.4 876.0 871.9 871.9 876.0 DAY 6 3 3 12 3 2 15 15 25 15 9 11 MIN. QFE PRESSURE IN HPA 857.3 853.0 849.5 851.9 856.7 853.9 855.5 858.3 856.5 862.2 862.0 853.9 849.5 DAY 21 24 24 25 31 20 9 19 18 1 25 23 MEAN QNH PRESSURE IN HPA 1018.7 1015.0 1011.5 1012.6 1015.4 1012.7 1010.4 1012.3 1014.9 1021.6 1019.0 1017.2 1015.1 MAX. QNH PRESSURE IN HPA 1026.4 1025.5 1021.9 1020.3 1022.5 1018.2 1016.8 1016.2 1020.6 1029.2 1024.6 1024.6 1029.2 DAY 6 3 3 12 3 2 15 15 25 15 9 11 MIN. QNH PRESSURE IN HPA 1007.9 1003.0 999.0 1001.8 1007.2 1004.0 1005.9 1009.1 1007.0 1013.5 1013.3 1004.0 999.0 DAY 21 24 24 25 31 20 9 19 18 1 25 23 MEAN QFF PRESSURE IN HPA 1022.9 1019.0 1012.0 1010.4 1009.2 1004.1 1000.3 1002.4 1007.9 1018.9 1018.6 1021.1 1012.2 MAX. QFF PRESSURE IN HPA 1032.4 1034.4 1025.4 1022.4 1018.3 1012.5 1007.5 1007.3 1017.1 1029.4 1026.3 1028.4 1034.4 DAY 6 3 1 3 2 6 15 25 25 15 30 27 MIN. QFF PRESSURE IN HPA 1008.9 1002.6 1000.1 996.1 997.4 993.4 994.0 998.6 999.9 1008.5 1010.6 1006.8 993.4 DAY 21 24 23 25 31 20 8 11 6 1 25 23 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1968 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.3 2.7 8.9 14.0 20.1 23.6 27.6 27.3 23.9 17.1 9.6 4.3 15.1 MINIMUN AIR TEMPERATURE (C) -3.4 -3.5 2.4 6.3 12.2 14.9 18.0 17.2 12.6 7.9 3.0 -1.3 7.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 4 5 0 0 0 0 9 DAYS WITH MINIMUM TEMP. <=-4 14 11 3 0 0 0 0 0 0 0 0 6 34 DAYS WITH FREEZING MIN.<= 0 29 23 9 0 0 0 0 0 0 2 6 21 90 TEMPERATURE RECORDS LOWEST(C) -8.0 -14.0 -5.0 1.0 3.0 9.0 10.0 8.0 7.0 -1.0 -2.0 -6.0 -14.0 DAY 18 7 25 5 1 4 14 28 21 28 20 24 MAXIMUM AIR TEMPERATURE (C) 6.9 7.2 13.9 19.1 25.1 29.2 33.8 33.9 31.1 23.9 15.1 9.2 20.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 2 16 30 29 22 0 0 0 99 DAYS WITH MAXIMUM TEMP. <= 0 0 4 0 0 0 0 0 0 0 0 0 0 4 TEMPERATURE RECORDS HIGHEST(C) 14.0 17.0 23.0 29.0 32.0 36.0 39.0 40.0 36.0 29.0 19.0 14.0 40.0 DAY 15 29 14 18 21 28 5 17 4 4 8 1 DIF. BETWEEN (MAX.-MIN.) (C) 10.3 10.7 11.5 12.8 12.9 14.3 15.8 16.7 18.5 16.0 12.1 10.5 13.5 MEAN DAILY TEMP. (MDT) (C) 1.7 1.8 8.2 12.7 18.7 22.0 25.9 25.5 21.8 15.9 9.1 4.0 13.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 9.5 64.0 154.0 144.0 37.5 1.0 0.0 0.0 410.0 HEATING DEG. DAYS(BASE 18 0C) 504.5 468.5 305.0 162.0 20.0 5.0 0.0 0.0 0.0 77.0 268.0 435.0 2245.0 DEWPOINT (MEAN C) -5.0 -3.9 -1.5 2.7 6.5 9.4 10.2 10.8 7.8 6.0 3.2 -1.3 3.7 MIXING RATIO (G/KG) 3.14 3.44 4.18 5.50 7.26 8.74 9.28 9.64 7.91 6.99 5.63 4.13 6.32 VAPOUR PRESSURE (HPA) 4.33 4.75 5.76 7.58 9.98 11.94 12.66 13.15 10.83 9.62 7.78 5.69 8.67 SATURATION DEF. (HPA) 3.17 3.16 6.20 9.28 14.24 18.62 25.67 24.87 20.61 11.00 4.62 2.87 12.03 RELATIVE HUMIDITY (MEAN %) 61 64 51 49 43 43 36 38 39 51 66 69 51 RELATIVE HUMIDITY (MAX. %) 77 82 71 68 57 60 51 56 59 74 85 86 69 RELATIVE HUMIDITY (MIN. %) 48 50 38 38 34 32 26 27 26 37 53 55 39 RELATIVE HUMIDITY (MEAN% 03UTC) 77 79 69 68 57 60 50 56 59 74 84 85 68 RELATIVE HUMIDITY (MEAN% 09UTC) 53 57 41 42 36 36 28 29 28 39 56 59 42 RELATIVE HUMIDITY (MEAN% 15UTC) 59 66 50 46 44 43 37 37 41 52 68 71 51 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 8.4 41.6 16.6 41.1 25.0 15.3 0.0 0.0 0.0 3.7 13.0 13.5 178.2 DAYS WITH PRECIPITATION >=10 0 2 1 1 1 1 0 0 0 0 0 0 6 DAYS WITH PRECIPITATION >= 5 0 4 1 2 1 1 0 0 0 0 1 1 11 DAYS WITH PRECIPITATION >= 1 3 6 4 4 4 3 0 0 0 2 4 4 34 DAYS WITH PRECIPITATION 5 8 11 8 8 4 0 0 0 5 7 7 63 GREATEST DAILY PRECIPITATION 3.0 15.0 10.0 24.0 17.0 11.0 0.0 0.0 0.0 2.0 5.0 6.0 24.0 DAY 17 3 17 3 31 3 ** ** ** 24 5 13 DAY WITH THUNDER STORM 0 0 1 2 2 3 0 0 0 1 0 0 9 DAYS WITH SNOW OR SLEET 2 3 0 0 0 0 0 0 0 0 0 3 8 DAYS WITH DUST 0 0 2 0 0 0 0 1 1 0 0 0 4 WIND DIRECTION (PREVAILING) 225 225 225 45 45 45 45 45 45 45 45 45 45 PREVAILING WIND SPEED(KNOTS) 5.1 5.4 8.3 7.1 7.2 6.7 5.5 5.0 4.1 4.4 2.8 2.8 5.3 PREVAILING WIND PERCENT 34.2 35.2 32.3 32.0 41.3 46.7 33.5 43.9 26.0 20.6 18.7 27.1 30.3 CALMS PERCENT OF WIND 0.0 0.0 0.0 0.0 0.0 0.0 0.6 0.0 7.3 2.6 8.7 2.6 1.8 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 207 179 201 82 63 59 42 44 29 63 146 62 61 VECTOR WIND MAGNITUDE(KNOTS) 0.6 0.6 1.1 2.5 4.0 4.9 3.7 3.4 1.6 1.0 0.5 0.7 1.6 WIND STEADINESES (MEAN %) 13.3 12.5 17.2 41.0 65.6 75.4 74.0 75.6 45.7 28.6 19.2 24.1 34.0 WIND SPEED (MEAN KNOTS) 4.5 4.8 6.4 6.1 6.1 6.5 5.0 4.5 3.5 3.5 2.6 2.9 4.7 FASTEST WIND DIRECTION 90 50 230 50 270 50 90 360 360 230 230 210 230 FASTEST WIND SPEED (KNOTS) 10 22 30 16 20 17 18 20 18 18 9 10 30 DAY 1 3 14 27 21 9 25 23 17 15 7 27 DAYS WITH SKY CLEAR (0-2)/8 12 6 10 5 7 23 27 26 28 15 3 10 172 DAYS WITH P.CLOUDY (3-6)/8 11 13 8 10 14 6 4 4 2 14 19 13 118 DAYS WITH CLOUDY (7-8)/8 8 10 13 15 10 1 0 1 0 2 8 8 76 DAYS WITH VISIBILITY =< 2 KM 1 1 1 1 0 0 0 0 0 0 0 2 6 DURATION OF SUNSHINE HOURS 176.1 187.4 194.5 219.9 264.3 294.3 355.5 331.5 298.4 264.7 173.6 151.5 2911.7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1968 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 862.8 865.5 864.0 865.1 866.3 862.2 862.1 862.8 863.5 866.4 867.1 863.6 864.3 MAX. QFE PRESSURE IN HPA 870.7 871.8 876.7 872.9 872.0 870.2 867.1 869.6 869.4 874.3 873.1 872.7 876.7 DAY-HOUR 20- 6 7- 6 27- 6 1- 6 8- 6 1- 3 26- 6 30- 6 19- 6 16- 6 22- 6 23- 6 MIN. QFE PRESSURE IN HPA 850.8 855.2 855.0 852.4 860.7 855.7 855.0 858.0 857.7 855.2 861.8 855.5 850.8 DAY-HOUR 16-15 3- 3 10-12 24-12 30-12 23-12 11-15 1-12 6-15 25-15 29-12 9-12 MEAN QNH PRESSURE IN HPA 1014.2 1017.2 1015.6 1016.8 1018.2 1013.5 1013.3 1014.2 1015.0 1018.3 1019.1 1015.1 1015.9 MAX. QNH PRESSURE IN HPA 1023.2 1024.4 1030.0 1025.7 1024.7 1022.6 1019.1 1021.9 1021.7 1027.3 1025.9 1025.5 1030.0 DAY-HOUR 20- 6 7- 6 27- 6 1- 6 8- 6 1- 3 26- 6 30- 6 19- 6 16- 6 22- 6 23- 6 MIN. QNH PRESSURE IN HPA 1000.5 1005.5 1005.3 1002.3 1011.8 1006.1 1005.3 1008.7 1008.4 1005.5 1013.0 1005.9 1000.5 DAY-HOUR 16-15 3- 3 10-12 24-12 30-12 23-12 11-15 1-12 6-15 25-15 29-12 9-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 862.8 865.3 864.0 865.5 866.8 862.9 862.7 863.3 864.0 866.6 867.2 863.4 864.5 MAX. QFE PRESSURE IN HPA 870.3 871.2 875.0 872.5 871.6 870.2 866.6 868.8 868.8 872.7 872.2 870.7 875.0 DAY 20 7 27 1 8 1 27 30 19 16 22 23 MIN. QFE PRESSURE IN HPA 854.3 855.2 855.3 855.0 862.3 857.8 857.8 859.7 859.4 859.2 863.1 857.1 854.3 DAY 16 3 10 24 17 24 1 1 7 25 19 9 MEAN QNH PRESSURE IN HPA 1014.2 1017.0 1015.5 1017.2 1018.8 1014.3 1014.0 1014.8 1015.6 1018.5 1019.2 1014.9 1016.2 MAX. QNH PRESSURE IN HPA 1022.7 1023.8 1028.1 1025.2 1024.2 1022.6 1018.5 1021.0 1021.0 1025.5 1024.9 1023.2 1028.1 DAY 20 7 27 1 8 1 27 30 19 16 22 23 MIN. QNH PRESSURE IN HPA 1004.5 1005.5 1005.6 1005.3 1013.6 1008.5 1008.5 1010.7 1010.3 1010.1 1014.5 1007.7 1004.5 DAY 16 3 10 24 17 24 1 1 7 25 19 9 MEAN QFF PRESSURE IN HPA 1018.1 1020.9 1015.5 1014.5 1012.6 1006.3 1004.2 1005.1 1008.5 1014.7 1019.2 1017.5 1013.1 MAX. QFF PRESSURE IN HPA 1029.2 1034.1 1031.9 1025.2 1018.6 1017.1 1010.2 1014.5 1017.0 1023.4 1027.6 1027.8 1034.1 DAY 20 7 27 1 4 1 14 28 19 28 22 24 MIN. QFF PRESSURE IN HPA 1003.1 1006.7 1002.8 999.5 1006.5 999.2 997.3 999.6 1001.1 1005.4 1014.6 1008.6 997.3 DAY 16 3 15 24 17 20 5 1 7 25 29 9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1968 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 863.8 866.4 865.1 866.3 867.3 863.3 863.1 863.9 864.7 867.6 868.2 864.7 865.4 MAX. QFE PRESSURE IN HPA 870.7 871.8 876.7 872.9 872.0 869.9 867.1 869.6 869.4 874.3 873.1 872.7 876.7 DAY 20 7 27 1 8 1 26 30 19 16 22 23 MIN. QFE PRESSURE IN HPA 855.0 855.5 856.3 855.9 862.6 858.0 857.5 860.0 860.1 860.2 864.0 857.7 855.0 DAY 16 3 10 24 17 23 11 1 7 25 29 9 MEAN QNH PRESSURE IN HPA 1015.3 1018.2 1016.8 1018.1 1019.3 1014.7 1014.6 1015.5 1016.4 1019.7 1020.4 1016.4 1017.1 MAX. QNH PRESSURE IN HPA 1023.2 1024.4 1030.0 1025.7 1024.7 1022.3 1019.1 1021.9 1021.7 1027.3 1025.9 1025.5 1030.0 DAY 20 7 27 1 8 1 26 30 19 16 22 23 MIN. QNH PRESSURE IN HPA 1005.3 1005.9 1006.8 1006.3 1014.0 1008.7 1008.1 1011.0 1011.1 1011.2 1015.6 1008.4 1005.3 DAY 16 3 10 24 17 23 11 1 7 25 29 9 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 863.0 865.9 864.3 865.3 866.5 862.5 862.3 863.0 863.8 866.7 867.2 863.6 864.5 MAX. QFE PRESSURE IN HPA 870.4 871.7 875.6 870.6 871.3 869.5 866.6 868.9 868.1 873.6 872.1 871.4 875.6 DAY 19 7 27 1 8 1 26 30 19 16 24 23 MIN. QFE PRESSURE IN HPA 853.7 855.6 855.7 854.9 862.2 856.8 856.8 858.6 859.4 857.4 862.5 856.7 853.7 DAY 16 3 10 24 30 23 11 1 7 25 29 9 MEAN QNH PRESSURE IN HPA 1014.4 1017.7 1015.9 1017.0 1018.4 1013.8 1013.6 1014.4 1015.3 1018.6 1019.2 1015.1 1016.1 MAX. QNH PRESSURE IN HPA 1022.8 1024.3 1028.8 1023.1 1023.9 1021.8 1018.5 1021.1 1020.2 1026.5 1024.8 1024.0 1028.8 DAY 19 7 27 1 8 1 26 30 19 16 24 23 MIN. QNH PRESSURE IN HPA 1003.8 1006.0 1006.1 1005.2 1013.5 1007.3 1007.3 1009.4 1010.3 1008.0 1013.8 1007.2 1003.8 DAY 16 3 10 24 30 23 11 1 7 25 29 9 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 862.2 864.9 863.3 864.2 865.5 861.4 861.2 861.9 862.5 865.7 866.4 863.0 863.5 MAX. QFE PRESSURE IN HPA 869.8 870.3 874.0 869.3 869.6 868.4 865.3 867.4 867.0 872.8 871.5 871.0 874.0 DAY 19 5 26 1 8 1 26 30 18 16 24 23 MIN. QFE PRESSURE IN HPA 851.5 855.7 855.0 852.4 860.7 855.7 855.4 858.0 858.1 855.6 861.8 855.5 851.5 DAY 16 3 10 24 30 23 11 1 6 25 29 9 MEAN QNH PRESSURE IN HPA 1013.5 1016.5 1014.8 1015.7 1017.2 1012.6 1012.4 1013.2 1013.9 1017.4 1018.3 1014.4 1015.0 MAX. QNH PRESSURE IN HPA 1022.2 1022.7 1027.0 1021.6 1021.9 1020.6 1017.0 1019.4 1019.0 1025.6 1024.1 1023.5 1027.0 DAY 19 5 26 1 8 1 26 30 18 16 24 23 MIN. QNH PRESSURE IN HPA 1001.3 1006.1 1005.3 1002.3 1011.8 1006.1 1005.7 1008.7 1008.8 1006.0 1013.0 1005.9 1001.3 DAY 16 3 10 24 30 23 11 1 6 25 29 9 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1968 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 862.4 865.1 863.6 864.2 865.5 861.2 861.0 861.8 862.5 865.7 866.7 863.5 863.6 MAX. QFE PRESSURE IN HPA 870.2 871.0 874.2 869.2 870.1 869.2 865.3 867.2 867.6 873.0 871.7 871.2 874.2 DAY 19 6 26 27 22 1 26 29 18 16 24 23 MIN. QFE PRESSURE IN HPA 850.8 857.0 855.0 853.0 861.2 856.2 855.0 858.0 857.7 855.2 862.4 856.0 850.8 DAY 16 3 10 24 30 30 11 2 6 25 29 9 MEAN QNH PRESSURE IN HPA 1013.8 1016.8 1015.1 1015.8 1017.2 1012.3 1012.2 1013.1 1013.8 1017.5 1018.7 1015.0 1015.1 MAX. QNH PRESSURE IN HPA 1022.6 1023.5 1027.2 1021.5 1022.5 1021.5 1017.0 1019.2 1019.7 1025.8 1024.3 1023.8 1027.2 DAY 19 6 26 27 22 1 26 29 18 16 24 23 MIN. QNH PRESSURE IN HPA 1000.5 1007.6 1005.3 1003.0 1012.4 1006.7 1005.3 1008.7 1008.4 1005.5 1013.7 1006.4 1000.5 DAY 16 3 10 24 30 30 11 2 6 25 29 9 MEAN QFF PRESSURE IN HPA 1017.6 1020.5 1015.0 1012.9 1010.9 1004.2 1002.2 1003.3 1006.6 1013.8 1018.6 1017.6 1011.9 MAX. QFF PRESSURE IN HPA 1028.9 1033.3 1031.0 1020.4 1016.0 1015.4 1008.5 1012.2 1014.4 1023.7 1026.7 1029.1 1033.3 DAY 19 7 26 1 3 1 14 29 18 30 24 23 MIN. QFF PRESSURE IN HPA 999.4 1010.4 1000.9 998.9 1005.3 996.3 993.7 997.3 998.8 1000.3 1013.1 1007.6 993.7 DAY 16 3 14 24 20 19 5 2 6 25 1 9 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1969 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -1.3 0.2 10.7 14.5 20.5 26.1 25.8 25.9 21.4 16.5 6.7 5.4 14.4 MINIMUN AIR TEMPERATURE (C) -6.0 -5.0 4.3 6.8 11.2 15.9 17.0 17.5 11.6 8.2 -1.6 -0.7 6.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 2 3 4 0 0 0 0 9 DAYS WITH MINIMUM TEMP. <=-4 26 19 1 0 0 0 0 0 0 0 12 1 59 DAYS WITH FREEZING MIN.<= 0 29 26 5 2 0 0 0 0 0 0 20 22 104 TEMPERATURE RECORDS LOWEST(C) -14.0 -11.0 -4.0 -2.0 6.0 7.0 11.0 14.0 2.0 2.0 -10.0 -4.0 -14.0 DAY 8 16 25 15 8 2 9 1 13 15 19 30 MAXIMUM AIR TEMPERATURE (C) 2.7 4.4 15.8 20.1 25.9 31.8 31.6 31.7 28.2 23.5 12.6 10.3 19.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 5 26 19 24 16 4 0 0 94 DAYS WITH MAXIMUM TEMP. <= 0 8 3 0 0 0 0 0 0 0 0 0 0 11 TEMPERATURE RECORDS HIGHEST(C) 8.0 15.0 25.0 27.0 31.0 38.0 38.0 37.0 33.0 31.0 20.0 14.0 38.0 DAY 16 28 31 4 15 29 15 4 6 4 1 1 DIF. BETWEEN (MAX.-MIN.) (C) 8.7 9.4 11.5 13.3 14.7 15.9 14.6 14.2 16.6 15.3 14.2 11.0 13.3 MEAN DAILY TEMP. (MDT) (C) -1.6 -0.3 10.1 13.4 18.5 23.9 24.3 24.6 19.9 15.9 5.5 4.8 13.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 7.0 96.5 108.0 111.0 21.0 0.5 0.0 0.0 344.0 HEATING DEG. DAYS(BASE 18 0C) 608.0 512.0 246.0 140.5 22.0 3.5 0.0 0.0 26.5 79.0 375.0 409.5 2422.0 DEWPOINT (MEAN C) -6.3 -5.2 1.7 2.4 7.3 7.5 10.4 8.5 7.0 5.4 -2.6 -1.3 2.9 MIXING RATIO (G/KG) 2.91 3.12 5.23 5.45 7.58 7.72 9.33 8.24 7.45 6.64 3.85 4.07 5.97 VAPOUR PRESSURE (HPA) 4.01 4.31 7.17 7.48 10.38 10.53 12.70 11.27 10.22 9.13 5.33 5.63 8.18 SATURATION DEF. (HPA) 1.75 2.18 6.43 10.04 14.71 24.65 22.06 23.43 16.93 10.82 5.24 3.63 11.82 RELATIVE HUMIDITY (MEAN %) 70 68 56 47 45 33 40 35 42 51 54 64 50 RELATIVE HUMIDITY (MAX. %) 84 83 76 65 65 51 59 48 65 76 79 82 69 RELATIVE HUMIDITY (MIN. %) 59 58 43 35 33 23 30 25 28 34 38 49 38 RELATIVE HUMIDITY (MEAN% 03UTC) 82 83 75 65 64 51 59 47 64 74 78 82 69 RELATIVE HUMIDITY (MEAN% 09UTC) 64 62 49 39 37 25 32 27 31 37 41 54 42 RELATIVE HUMIDITY (MEAN% 15UTC) 71 69 55 47 44 32 40 39 44 55 59 68 52 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 58.9 19.8 15.0 53.7 17.1 0.0 0.0 0.0 8.4 9.0 12.2 15.4 209.5 DAYS WITH PRECIPITATION >=10 3 1 0 2 0 0 0 0 0 0 1 0 7 DAYS WITH PRECIPITATION >= 5 5 1 0 3 1 0 0 0 1 1 1 0 13 DAYS WITH PRECIPITATION >= 1 7 2 6 8 5 0 0 0 1 4 1 5 39 DAYS WITH PRECIPITATION 12 6 13 12 9 1 1 1 3 10 4 9 81 GREATEST DAILY PRECIPITATION 19.0 15.0 4.0 30.0 7.4 0.0 0.0 0.0 8.0 5.0 11.0 4.0 30.0 DAY 23 21 29 13 7 ** ** ** 12 27 3 3 DAY WITH THUNDER STORM 0 0 1 0 3 0 0 1 1 0 0 1 7 DAYS WITH SNOW OR SLEET 5 3 1 0 0 0 0 0 0 0 1 2 12 DAYS WITH DUST 1 0 1 3 2 1 1 0 0 0 0 0 9 WIND DIRECTION (PREVAILING) 45 45 180 225 45 45 45 45 45 45 45 225 45 PREVAILING WIND SPEED(KNOTS) 2.6 3.6 4.9 5.9 5.6 5.2 6.7 6.4 4.3 4.1 2.3 3.3 4.7 PREVAILING WIND PERCENT 21.9 25.0 20.0 24.0 25.2 36.7 44.5 47.7 37.3 27.4 21.3 22.6 28.1 CALMS PERCENT OF WIND 1.3 0.0 0.6 0.7 0.0 0.0 0.0 0.6 1.3 4.3 7.3 5.8 1.9 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 164 150 155 1834 VECTOR WIND DIRECTION (MEAN) 64 42 157 200 38 40 32 29 55 42 175 222 40 VECTOR WIND MAGNITUDE(KNOTS) 0.4 1.0 0.2 1.3 1.5 2.4 4.9 5.4 2.0 0.9 0.5 0.4 1.3 WIND STEADINESES (MEAN %) 12.9 29.4 4.8 25.5 30.0 47.1 79.0 81.8 54.1 23.1 17.2 13.3 30.2 WIND SPEED (MEAN KNOTS) 3.1 3.4 4.2 5.1 5.0 5.1 6.2 6.6 3.7 3.9 2.9 3.0 4.3 FASTEST WIND DIRECTION 180 50 360 180 180 230 360 360 50 50 230 330 180 FASTEST WIND SPEED (KNOTS) 10 10 15 30 15 24 20 20 13 18 15 12 30 DAY 4 9 12 14 7 23 31 9 10 14 15 2 DAYS WITH SKY CLEAR (0-2)/8 7 7 0 7 15 28 26 26 22 11 18 6 173 DAYS WITH P.CLOUDY (3-6)/8 11 8 10 7 10 2 4 3 7 15 9 19 105 DAYS WITH CLOUDY (7-8)/8 13 13 21 16 6 0 1 2 1 5 3 6 87 DAYS WITH VISIBILITY =< 2 KM 3 2 0 0 0 0 0 0 0 0 0 0 5 DURATION OF SUNSHINE HOURS 139.5 142.5 147.3 202.3 293.5 347.1 350.4 335.7 284.8 250.9 223.4 162.6 2880.0 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1969 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 863.4 864.2 860.7 861.4 862.3 860.3 859.5 862.5 864.5 865.5 866.9 864.9 863.0 MAX. QFE PRESSURE IN HPA 871.2 871.7 870.2 867.9 870.8 867.4 863.1 869.2 873.9 871.0 874.5 870.1 874.5 DAY-HOUR 1- 6 3- 9 12- 6 23- 6 22- 3 2- 6 26- 6 31- 6 14- 6 1- 6 23- 6 20- 6 MIN. QFE PRESSURE IN HPA 851.3 856.2 850.1 848.9 854.7 854.0 855.1 856.8 858.4 854.2 858.4 855.9 848.9 DAY-HOUR 25- 3 9- 3 22-12 13-12 19-15 15-12 22-15 7-15 10-12 29-12 8-12 31-12 MEAN QNH PRESSURE IN HPA 1014.9 1015.8 1011.8 1012.6 1013.6 1011.3 1010.4 1013.8 1016.1 1017.2 1018.9 1016.6 1014.4 MAX. QNH PRESSURE IN HPA 1023.8 1024.3 1022.6 1020.0 1023.3 1019.4 1014.5 1021.5 1026.8 1023.5 1027.5 1022.5 1027.5 DAY-HOUR 1- 6 3- 9 12- 6 23- 6 22- 3 2- 6 26- 6 31- 6 14- 6 1- 6 23- 6 20- 6 MIN. QNH PRESSURE IN HPA 1001.1 1006.7 999.7 998.3 1004.9 1004.2 1005.4 1007.3 1009.2 1004.4 1009.2 1006.3 998.3 DAY-HOUR 25- 3 9- 3 22-12 13-12 19-15 15-12 22-15 7-15 10-12 29-12 8-12 31-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 863.2 864.1 860.8 861.6 862.8 861.1 860.2 863.1 864.9 865.5 867.0 864.9 863.3 MAX. QFE PRESSURE IN HPA 870.3 870.6 868.7 867.3 870.8 867.3 862.8 868.6 872.9 870.5 873.2 869.1 873.2 DAY 1 3 12 23 22 2 3 31 14 1 23 12 MIN. QFE PRESSURE IN HPA 851.3 856.2 853.1 850.9 856.1 856.6 857.6 858.2 859.4 855.6 859.0 858.3 850.9 DAY 25 9 21 18 2 23 23 15 11 29 9 27 MEAN QNH PRESSURE IN HPA 1014.7 1015.7 1011.9 1012.8 1014.2 1012.2 1011.2 1014.5 1016.6 1017.2 1019.0 1016.6 1014.7 MAX. QNH PRESSURE IN HPA 1022.7 1023.1 1020.9 1019.3 1023.3 1019.3 1014.2 1020.8 1025.7 1023.0 1026.0 1021.4 1026.0 DAY 1 3 12 23 22 2 3 31 14 1 23 12 MIN. QNH PRESSURE IN HPA 1001.1 1006.7 1003.1 1000.6 1006.5 1007.1 1008.3 1008.9 1010.3 1006.0 1009.9 1009.1 1000.6 DAY 25 9 21 18 2 23 23 15 11 29 9 27 MEAN QFF PRESSURE IN HPA 1020.4 1020.8 1010.6 1009.6 1007.8 1003.1 1002.1 1005.5 1010.5 1013.5 1021.4 1018.8 1012.0 MAX. QFF PRESSURE IN HPA 1031.1 1030.4 1023.5 1018.5 1019.1 1014.4 1007.1 1013.9 1024.0 1020.2 1030.1 1025.3 1031.1 DAY 9 3 25 15 22 2 9 31 14 15 19 12 MIN. QFF PRESSURE IN HPA 1006.1 1009.1 999.4 997.3 1000.1 997.1 996.0 997.8 1001.8 1002.7 1009.2 1009.4 996.0 DAY 25 9 21 18 25 15 23 8 10 29 9 27 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1969 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 864.3 865.0 861.8 862.4 863.2 861.2 860.4 863.5 865.5 866.5 867.9 865.9 864.0 MAX. QFE PRESSURE IN HPA 871.2 871.4 870.2 867.9 870.6 867.4 863.1 869.2 873.9 871.0 874.5 870.1 874.5 DAY 1 3 12 23 22 2 26 31 14 1 23 20 MIN. QFE PRESSURE IN HPA 853.8 858.8 853.6 852.2 856.1 856.2 858.3 858.1 859.9 855.9 860.4 858.5 852.2 DAY 25 9 21 13 2 15 19 15 10 29 9 27 MEAN QNH PRESSURE IN HPA 1015.9 1016.7 1013.0 1013.8 1014.7 1012.4 1011.4 1015.0 1017.3 1018.4 1020.0 1017.7 1015.5 MAX. QNH PRESSURE IN HPA 1023.8 1024.0 1022.6 1020.0 1023.1 1019.4 1014.5 1021.5 1026.8 1023.5 1027.5 1022.5 1027.5 DAY 1 3 12 23 22 2 26 31 14 1 23 20 MIN. QNH PRESSURE IN HPA 1003.9 1009.6 1003.7 1002.1 1006.5 1006.7 1009.1 1008.8 1010.9 1006.3 1011.4 1009.3 1002.1 DAY 25 9 21 13 2 15 19 15 10 29 9 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 863.6 864.7 861.2 861.8 862.6 860.5 859.7 862.6 864.7 865.6 867.1 865.0 863.3 MAX. QFE PRESSURE IN HPA 870.9 871.7 869.1 867.0 869.8 866.7 862.6 868.4 872.6 870.5 873.8 869.3 873.8 DAY 9 3 12 23 22 2 26 31 14 9 23 9 MIN. QFE PRESSURE IN HPA 853.9 859.1 852.3 851.7 855.6 855.9 857.4 857.6 859.3 855.4 859.8 856.6 851.7 DAY 23 13 22 13 2 15 28 15 10 29 9 31 MEAN QNH PRESSURE IN HPA 1015.1 1016.4 1012.3 1013.0 1013.9 1011.6 1010.6 1014.0 1016.4 1017.4 1019.1 1016.7 1014.7 MAX. QNH PRESSURE IN HPA 1023.4 1024.3 1021.4 1019.0 1022.2 1018.6 1014.0 1020.6 1025.4 1023.0 1026.7 1021.6 1026.7 DAY 9 3 12 23 22 2 26 31 14 9 23 9 MIN. QNH PRESSURE IN HPA 1004.0 1010.0 1002.2 1001.5 1006.0 1006.3 1008.0 1008.3 1010.2 1005.7 1010.8 1007.1 1001.5 DAY 23 13 22 13 2 15 28 15 10 29 9 31 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 862.8 863.6 859.9 860.6 861.5 859.4 858.6 861.6 863.6 864.5 866.2 864.2 862.2 MAX. QFE PRESSURE IN HPA 870.4 870.7 866.7 866.5 868.7 865.5 861.3 866.8 870.8 869.5 872.6 868.6 872.6 DAY 9 3 12 26 21 2 26 31 13 14 23 9 MIN. QFE PRESSURE IN HPA 853.0 857.5 850.1 848.9 855.2 854.0 855.7 856.9 858.4 854.2 858.4 855.9 848.9 DAY 23 13 22 13 19 15 28 15 10 29 8 31 MEAN QNH PRESSURE IN HPA 1014.2 1015.0 1010.9 1011.7 1012.7 1010.3 1009.4 1012.9 1015.1 1016.1 1018.1 1015.8 1013.5 MAX. QNH PRESSURE IN HPA 1022.8 1023.2 1018.6 1018.4 1020.9 1017.3 1012.5 1018.7 1023.3 1021.8 1025.4 1020.8 1025.4 DAY 9 3 12 26 21 2 26 31 13 14 23 9 MIN. QNH PRESSURE IN HPA 1003.0 1008.1 999.7 998.3 1005.5 1004.2 1006.1 1007.5 1009.2 1004.4 1009.2 1006.3 998.3 DAY 23 13 22 13 19 15 28 15 10 29 8 31 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1969 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 863.2 863.7 860.1 860.7 861.4 859.2 858.5 861.7 863.8 864.7 866.6 864.6 862.3 MAX. QFE PRESSURE IN HPA 870.0 870.9 866.2 866.0 869.4 865.1 861.7 867.3 871.3 869.6 872.7 868.4 872.7 DAY 9 3 12 26 21 3 31 30 13 14 23 10 MIN. QFE PRESSURE IN HPA 853.8 856.4 850.5 851.3 854.7 854.4 855.1 856.8 858.5 854.6 858.6 856.4 850.5 DAY 23 8 22 17 19 15 22 7 10 29 8 31 MEAN QNH PRESSURE IN HPA 1014.6 1015.2 1011.0 1011.8 1012.6 1010.0 1009.3 1013.0 1015.3 1016.4 1018.5 1016.3 1013.7 MAX. QNH PRESSURE IN HPA 1022.4 1023.4 1018.1 1017.8 1021.7 1016.8 1012.9 1019.3 1023.9 1021.9 1025.5 1020.6 1025.5 DAY 9 3 12 26 21 3 31 30 13 14 23 10 MIN. QNH PRESSURE IN HPA 1003.9 1006.9 1000.2 1001.1 1004.9 1004.6 1005.4 1007.3 1009.3 1004.8 1009.4 1006.9 1000.2 DAY 23 8 22 17 19 15 22 7 10 29 8 31 MEAN QFF PRESSURE IN HPA 1020.4 1020.1 1009.7 1008.5 1006.2 1000.8 1000.2 1003.9 1009.2 1012.7 1021.0 1018.5 1010.9 MAX. QFF PRESSURE IN HPA 1030.8 1031.0 1021.7 1015.4 1017.4 1010.9 1005.7 1012.2 1022.8 1018.1 1029.0 1024.0 1031.0 DAY 9 3 24 14 21 1 31 30 13 14 23 9 MIN. QFF PRESSURE IN HPA 1006.0 1008.6 996.1 997.5 997.1 994.5 993.0 995.5 1000.9 1001.8 1008.2 1008.9 993.0 DAY 23 28 22 17 19 14 22 7 9 29 8 31 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1970 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.7 6.8 9.7 17.8 23.3 26.7 26.8 27.9 22.5 16.9 12.5 3.8 16.3 MINIMUN AIR TEMPERATURE (C) -3.3 -0.5 2.3 8.7 12.9 16.8 18.2 19.4 12.3 6.8 3.5 -2.1 7.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 4 8 8 0 0 0 0 20 DAYS WITH MINIMUM TEMP. <=-4 14 3 0 0 0 0 0 0 0 0 0 9 26 DAYS WITH FREEZING MIN.<= 0 29 18 10 0 0 0 0 0 0 1 3 24 85 TEMPERATURE RECORDS LOWEST(C) -10.0 -4.0 -3.0 2.0 4.0 10.0 10.0 15.0 6.0 -1.0 0.0 -7.0 -10.0 DAY 29 1 8 26 9 12 19 26 19 26 16 20 MAXIMUM AIR TEMPERATURE (C) 6.0 12.0 14.5 23.5 29.0 32.5 32.0 33.5 28.9 23.6 18.8 8.3 21.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 1 16 23 20 31 15 2 0 0 108 DAYS WITH MAXIMUM TEMP. <= 0 1 0 0 0 0 0 0 0 0 0 0 0 1 TEMPERATURE RECORDS HIGHEST(C) 11.0 18.0 27.0 31.0 36.0 39.0 37.0 38.0 35.0 32.0 24.0 16.0 39.0 DAY 1 19 31 8 28 24 13 23 8 1 8 7 DIF. BETWEEN (MAX.-MIN.) (C) 9.3 12.5 12.2 14.8 16.1 15.7 13.8 14.1 16.6 16.8 15.3 10.4 14.0 MEAN DAILY TEMP. (MDT) (C) 1.4 5.7 8.4 16.1 21.0 24.7 25.1 26.5 20.6 15.2 11.1 3.1 14.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.5 48.5 120.5 127.5 169.5 37.0 0.5 0.0 0.0 504.0 HEATING DEG. DAYS(BASE 18 0C) 515.5 343.5 298.5 73.0 16.0 0.5 0.0 0.0 15.5 102.0 206.0 461.0 2031.5 DEWPOINT (MEAN C) -2.9 -2.6 -1.4 2.8 5.7 7.2 10.1 11.7 6.7 3.8 -0.2 -3.9 3.1 MIXING RATIO (G/KG) 3.62 3.70 4.08 5.50 6.82 7.62 9.23 10.30 7.29 6.01 4.43 3.38 6.00 VAPOUR PRESSURE (HPA) 5.00 5.10 5.62 7.56 9.33 10.40 12.56 13.98 9.98 8.27 6.12 4.67 8.22 SATURATION DEF. (HPA) 2.10 5.22 7.27 13.98 20.94 26.40 23.89 24.80 18.94 12.31 9.16 3.75 14.06 RELATIVE HUMIDITY (MEAN %) 73 53 50 40 35 31 37 39 39 45 44 60 46 RELATIVE HUMIDITY (MAX. %) 87 75 72 58 56 46 53 55 59 68 67 78 65 RELATIVE HUMIDITY (MIN. %) 59 39 37 29 24 22 28 28 26 30 30 47 33 RELATIVE HUMIDITY (MEAN% 03UTC) 86 75 71 58 56 46 53 55 57 67 66 77 64 RELATIVE HUMIDITY (MEAN% 09UTC) 63 41 41 31 26 24 30 31 29 31 31 50 36 RELATIVE HUMIDITY (MEAN% 15UTC) 78 54 47 38 33 31 36 40 43 52 51 63 47 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 28.3 0.1 27.0 11.3 3.1 0.0 8.0 0.0 0.0 0.0 4.3 18.5 100.6 DAYS WITH PRECIPITATION >=10 0 0 1 0 0 0 0 0 0 0 0 1 2 DAYS WITH PRECIPITATION >= 5 2 0 2 1 0 0 1 0 0 0 0 1 7 DAYS WITH PRECIPITATION >= 1 7 0 4 4 1 0 2 0 0 0 1 4 23 DAYS WITH PRECIPITATION 11 4 6 5 3 1 2 0 0 0 4 6 42 GREATEST DAILY PRECIPITATION 8.4 0.1 16.0 6.0 3.0 0.0 7.0 0.0 0.0 0.0 4.0 11.4 16.0 DAY 12 20 5 24 7 ** 24 ** ** ** 10 13 DAY WITH THUNDER STORM 0 0 0 2 0 0 0 0 0 0 0 0 2 DAYS WITH SNOW OR SLEET 6 1 1 0 0 0 0 0 0 0 0 2 10 DAYS WITH DUST 0 1 2 3 2 6 7 6 6 1 0 0 34 WIND DIRECTION (PREVAILING) 45 135 45 45 45 45 45 45 45 45 225 225 45 PREVAILING WIND SPEED(KNOTS) 3.4 4.5 6.2 5.5 5.8 6.6 7.9 7.5 7.0 4.6 4.2 5.1 6.0 PREVAILING WIND PERCENT 25.2 18.6 21.3 29.3 29.0 42.7 51.0 48.4 36.7 29.7 30.0 23.9 30.2 CALMS PERCENT OF WIND 4.5 0.0 0.0 0.0 0.0 1.3 0.0 1.9 0.7 2.6 0.7 3.2 1.3 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 28 215 97 79 78 41 46 42 53 51 197 172 53 VECTOR WIND MAGNITUDE(KNOTS) 0.9 0.1 1.0 0.8 1.1 3.8 5.3 5.6 3.3 1.1 1.0 0.7 1.7 WIND STEADINESES (MEAN %) 25.7 2.3 18.9 14.8 21.6 63.3 75.7 80.0 55.0 25.0 25.0 17.9 32.7 WIND SPEED (MEAN KNOTS) 3.5 4.3 5.3 5.4 5.1 6.0 7.0 7.0 6.0 4.4 4.0 3.9 5.2 FASTEST WIND DIRECTION 50 230 270 230 270 50 50 50 230 90 180 360 270 FASTEST WIND SPEED (KNOTS) 10 14 20 20 15 15 18 14 18 15 12 12 20 DAY 1 19 24 12 4 8 5 7 12 23 29 9 DAYS WITH SKY CLEAR (0-2)/8 8 9 6 8 14 26 16 28 27 29 12 10 193 DAYS WITH P.CLOUDY (3-6)/8 9 14 14 7 13 3 13 3 3 2 15 13 109 DAYS WITH CLOUDY (7-8)/8 14 5 11 15 4 1 2 0 0 0 3 8 63 DAYS WITH VISIBILITY =< 2 KM 4 0 0 0 0 0 0 0 0 0 0 0 4 DURATION OF SUNSHINE HOURS 131.6 200.0 205.3 235.2 303.2 339.5 323.4 351.2 312.5 298.8 231.0 171.6 3103.3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1970 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 863.4 862.5 862.5 863.7 860.9 859.8 858.8 858.8 862.8 865.1 866.7 865.0 862.5 MAX. QFE PRESSURE IN HPA 871.5 869.2 869.8 870.7 867.0 866.4 863.5 866.3 870.0 872.7 875.8 873.0 875.8 DAY-HOUR 3- 6 6- 6 26- 6 22- 6 22- 6 11- 6 23- 6 30- 3 18- 6 12- 6 15- 6 30- 6 MIN. QFE PRESSURE IN HPA 852.5 853.8 853.4 850.3 854.1 854.1 854.0 853.1 855.7 856.5 861.7 856.1 850.3 DAY-HOUR 23- 3 19-12 19-15 19-15 20-15 30-15 14-15 27-15 8-15 8-12 30-12 9-15 MEAN QNH PRESSURE IN HPA 1014.9 1013.8 1013.8 1015.2 1012.0 1010.8 1009.6 1009.6 1014.2 1016.8 1018.7 1016.6 1013.8 MAX. QNH PRESSURE IN HPA 1024.1 1021.5 1022.2 1023.2 1019.0 1018.3 1015.0 1018.2 1022.4 1025.5 1029.0 1025.8 1029.0 DAY-HOUR 3- 6 6- 6 26- 6 22- 6 22- 6 11- 6 23- 6 30- 3 18- 6 12- 6 15- 6 30- 6 MIN. QNH PRESSURE IN HPA 1002.4 1003.9 1003.5 999.9 1004.3 1004.3 1004.2 1003.1 1006.1 1007.0 1012.9 1006.5 999.9 DAY-HOUR 23- 3 19-12 19-15 19-15 20-15 30-15 14-15 27-15 8-15 8-12 30-12 9-15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 863.2 862.5 862.6 864.2 861.6 860.6 859.5 859.7 863.3 865.4 866.9 864.8 862.9 MAX. QFE PRESSURE IN HPA 870.3 868.3 869.0 869.8 866.4 865.6 863.2 866.3 868.6 871.7 875.2 871.7 875.2 DAY 3 16 26 13 22 11 23 30 18 12 15 31 MIN. QFE PRESSURE IN HPA 852.5 855.3 855.1 852.7 858.0 856.8 856.8 855.8 858.3 858.5 862.7 857.7 852.5 DAY 23 23 23 20 31 20 14 7 6 8 12 10 MEAN QNH PRESSURE IN HPA 1014.7 1013.8 1013.9 1015.7 1012.9 1011.7 1010.4 1010.6 1014.8 1017.1 1018.8 1016.4 1014.2 MAX. QNH PRESSURE IN HPA 1022.7 1020.5 1021.3 1022.2 1018.3 1017.4 1014.6 1018.2 1020.8 1024.3 1028.3 1024.3 1028.3 DAY 3 16 26 13 22 11 23 30 18 12 15 31 MIN. QNH PRESSURE IN HPA 1002.4 1005.6 1005.4 1002.7 1008.7 1007.3 1007.3 1006.2 1009.1 1009.3 1014.1 1008.4 1002.4 DAY 23 23 23 20 31 20 14 7 6 8 12 10 MEAN QFF PRESSURE IN HPA 1018.6 1015.5 1013.8 1011.1 1005.4 1002.2 1000.4 1000.3 1008.1 1014.0 1018.2 1019.7 1010.6 MAX. QFF PRESSURE IN HPA 1027.9 1022.2 1023.1 1020.3 1014.5 1012.2 1004.9 1008.9 1017.5 1020.8 1029.4 1029.2 1029.4 DAY 3 6 26 22 10 12 9 30 19 28 15 31 MIN. QFF PRESSURE IN HPA 1004.6 1005.5 1002.0 994.5 998.2 996.5 995.2 995.9 999.9 1003.3 1012.6 1010.2 994.5 DAY 23 19 23 20 31 20 14 7 6 8 4 14 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1970 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 864.3 863.4 863.4 864.8 862.0 861.0 859.8 860.0 864.0 866.3 867.8 866.0 863.6 MAX. QFE PRESSURE IN HPA 871.5 869.2 869.8 870.7 867.0 866.4 863.5 866.2 870.0 872.7 875.8 873.0 875.8 DAY 3 6 26 22 22 11 23 30 18 12 15 30 MIN. QFE PRESSURE IN HPA 853.8 855.7 856.0 854.3 857.6 856.5 856.9 855.7 858.7 859.0 863.9 860.1 853.8 DAY 23 19 23 20 7 20 5 27 6 8 12 10 MEAN QNH PRESSURE IN HPA 1015.9 1014.8 1014.9 1016.5 1013.3 1012.1 1010.8 1010.9 1015.5 1018.1 1019.9 1017.8 1015.0 MAX. QNH PRESSURE IN HPA 1024.1 1021.5 1022.2 1023.2 1019.0 1018.3 1015.0 1018.1 1022.4 1025.5 1029.0 1025.8 1029.0 DAY 3 6 26 22 22 11 23 30 18 12 15 30 MIN. QNH PRESSURE IN HPA 1003.9 1006.1 1006.4 1004.5 1008.3 1007.0 1007.5 1006.1 1009.5 1009.9 1015.4 1011.1 1003.9 DAY 23 19 23 20 7 20 5 27 6 8 12 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 863.6 862.9 862.9 864.1 861.2 860.2 859.1 859.0 863.0 865.3 866.9 865.1 862.8 MAX. QFE PRESSURE IN HPA 870.4 868.7 869.0 870.3 866.1 866.3 862.5 864.4 869.0 871.7 875.2 872.4 875.2 DAY 3 16 26 22 22 11 23 30 18 12 14 30 MIN. QFE PRESSURE IN HPA 854.2 854.8 855.5 855.1 857.0 855.3 856.0 855.0 857.7 857.7 862.8 859.0 854.2 DAY 23 19 23 19 7 8 14 27 11 8 30 13 MEAN QNH PRESSURE IN HPA 1015.1 1014.2 1014.3 1015.7 1012.4 1011.2 1010.0 1009.9 1014.5 1017.0 1018.9 1016.8 1014.1 MAX. QNH PRESSURE IN HPA 1022.8 1020.9 1021.3 1022.7 1017.9 1018.2 1013.8 1016.0 1021.3 1024.3 1028.3 1025.1 1028.3 DAY 3 16 26 22 22 11 23 30 18 12 14 30 MIN. QNH PRESSURE IN HPA 1004.4 1005.1 1005.9 1005.4 1007.6 1005.6 1006.4 1005.3 1008.4 1008.4 1014.2 1009.9 1004.4 DAY 23 19 23 19 7 8 14 27 11 8 30 13 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 862.9 861.8 861.7 862.8 860.0 858.8 858.0 857.8 861.8 864.2 866.0 864.3 861.7 MAX. QFE PRESSURE IN HPA 869.6 867.1 867.4 869.4 864.6 865.0 861.3 862.9 867.8 870.1 874.5 872.0 874.5 DAY 3 16 26 22 9 11 23 29 18 11 14 30 MIN. QFE PRESSURE IN HPA 854.1 853.8 854.5 851.4 855.7 854.4 854.7 853.8 855.9 856.5 861.7 856.5 851.4 DAY 23 19 19 19 20 8 14 27 8 8 30 13 MEAN QNH PRESSURE IN HPA 1014.2 1013.0 1012.9 1014.2 1011.0 1009.6 1008.8 1008.4 1013.0 1015.7 1017.8 1015.9 1012.9 MAX. QNH PRESSURE IN HPA 1021.9 1019.1 1019.4 1021.7 1016.2 1016.7 1012.5 1014.3 1019.9 1022.5 1027.5 1024.7 1027.5 DAY 3 16 26 22 9 11 23 29 18 11 14 30 MIN. QNH PRESSURE IN HPA 1004.3 1003.9 1004.7 1001.2 1006.1 1004.6 1004.9 1003.9 1006.3 1007.0 1012.9 1007.0 1001.2 DAY 23 19 19 19 20 8 14 27 8 8 30 13 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1970 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 863.3 862.1 861.9 862.8 859.6 858.5 857.7 857.5 861.8 864.5 866.1 864.6 861.7 MAX. QFE PRESSURE IN HPA 869.8 867.1 867.4 869.8 864.5 864.8 861.0 863.2 868.7 870.8 875.1 872.2 875.1 DAY 2 6 26 22 9 11 8 29 18 11 14 30 MIN. QFE PRESSURE IN HPA 855.1 854.1 853.4 850.3 854.1 854.1 854.0 853.1 855.7 857.0 861.7 856.1 850.3 DAY 23 23 19 19 20 30 14 27 8 8 30 9 MEAN QNH PRESSURE IN HPA 1014.7 1013.3 1013.1 1014.1 1010.6 1009.3 1008.3 1008.1 1013.1 1016.1 1017.9 1016.3 1012.9 MAX. QNH PRESSURE IN HPA 1022.2 1019.1 1019.4 1022.2 1016.1 1016.5 1012.1 1014.6 1020.9 1023.3 1028.2 1024.9 1028.2 DAY 2 6 26 22 9 11 8 29 18 11 14 30 MIN. QNH PRESSURE IN HPA 1005.4 1004.3 1003.5 999.9 1004.3 1004.3 1004.2 1003.1 1006.1 1007.6 1012.9 1006.5 999.9 DAY 23 23 19 19 20 30 14 27 8 8 30 9 MEAN QFF PRESSURE IN HPA 1018.7 1014.8 1012.8 1009.4 1003.0 999.7 998.3 997.7 1006.3 1012.9 1017.2 1019.5 1009.2 MAX. QFF PRESSURE IN HPA 1026.9 1021.8 1020.7 1021.1 1013.7 1011.5 1003.2 1004.7 1017.3 1020.5 1028.8 1029.5 1029.5 DAY 2 3 25 22 9 11 8 29 18 29 14 16 MIN. QFF PRESSURE IN HPA 1007.2 1004.1 1000.2 991.2 994.6 992.2 993.0 992.7 996.1 1001.9 1010.6 1006.8 991.2 DAY 23 19 19 19 20 30 13 27 8 8 11 9 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1971 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.1 5.2 11.6 15.2 23.6 25.5 28.1 27.6 22.8 15.8 10.6 5.1 16.2 MINIMUN AIR TEMPERATURE (C) -4.2 -1.7 3.7 6.9 14.2 16.7 18.7 19.1 12.8 6.4 4.2 -0.1 8.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 1 9 7 0 0 0 0 17 DAYS WITH MINIMUM TEMP. <=-4 17 8 1 0 0 0 0 0 0 0 0 5 31 DAYS WITH FREEZING MIN.<= 0 31 21 10 1 0 0 0 0 0 0 0 16 79 TEMPERATURE RECORDS LOWEST(C) -10.0 -9.0 -4.0 0.0 8.0 11.0 13.0 15.0 7.0 3.0 1.0 -5.0 -10.0 DAY 25 2 7 4 5 20 6 4 23 14 1 21 MAXIMUM AIR TEMPERATURE (C) 8.6 10.2 17.0 20.7 29.4 30.9 33.7 33.7 28.9 22.3 15.3 9.4 21.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 18 23 29 29 10 0 0 0 109 DAYS WITH MAXIMUM TEMP. <= 0 1 0 0 0 0 0 0 0 0 0 0 0 1 TEMPERATURE RECORDS HIGHEST(C) 18.0 17.0 26.0 25.0 33.0 36.0 39.0 38.0 36.0 27.0 20.0 16.0 39.0 DAY 6 23 28 12 15 15 6 6 1 6 4 8 DIF. BETWEEN (MAX.-MIN.) (C) 12.8 11.9 13.3 13.8 15.2 14.2 15.0 14.6 16.1 15.9 11.1 9.5 13.6 MEAN DAILY TEMP. (MDT) (C) 2.2 4.2 10.4 13.8 21.8 23.8 26.2 26.4 20.8 14.3 9.7 4.6 14.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 47.0 86.0 161.0 166.5 36.5 0.0 0.0 0.0 497.0 HEATING DEG. DAYS(BASE 18 0C) 488.5 385.5 236.0 126.5 0.5 0.0 0.0 0.0 5.0 114.5 248.0 414.0 2018.5 DEWPOINT (MEAN C) -6.0 -5.1 -1.4 2.5 7.7 9.7 10.2 9.3 5.5 2.6 2.2 -2.3 2.9 MIXING RATIO (G/KG) 2.94 3.12 4.12 5.47 7.78 8.99 9.28 8.73 6.72 5.40 5.26 3.81 5.97 VAPOUR PRESSURE (HPA) 4.08 4.28 5.68 7.50 10.63 12.21 12.63 11.90 9.24 7.45 7.26 5.26 8.18 SATURATION DEF. (HPA) 4.02 4.96 8.93 10.60 19.53 21.58 26.85 26.40 19.81 11.52 5.84 3.92 13.66 RELATIVE HUMIDITY (MEAN %) 54 50 43 46 38 39 35 34 35 44 59 61 45 RELATIVE HUMIDITY (MAX. %) 71 71 61 67 57 55 52 51 52 69 76 79 63 RELATIVE HUMIDITY (MIN. %) 41 36 32 33 28 30 25 24 24 30 46 50 33 RELATIVE HUMIDITY (MEAN% 03UTC) 70 70 60 66 56 55 52 51 52 69 76 76 63 RELATIVE HUMIDITY (MEAN% 09UTC) 43 41 35 37 30 32 28 26 25 31 49 53 36 RELATIVE HUMIDITY (MEAN% 15UTC) 56 47 39 42 36 38 31 32 36 46 62 63 44 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 5.0 20.4 21.0 36.9 10.2 4.1 0.4 0.0 0.0 1.2 10.0 8.6 117.8 DAYS WITH PRECIPITATION >=10 0 1 1 0 0 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 5 1 2 2 5 1 0 0 0 0 0 1 1 13 DAYS WITH PRECIPITATION >= 1 1 3 3 7 3 1 0 0 0 0 3 3 24 DAYS WITH PRECIPITATION 1 6 7 9 8 1 1 0 0 4 6 6 49 GREATEST DAILY PRECIPITATION 5.0 12.0 11.0 9.0 7.0 4.1 0.4 0.0 0.0 0.6 6.1 5.0 12.0 DAY 14 14 21 3 19 19 25 ** ** 3 12 14 DAY WITH THUNDER STORM 0 0 1 0 3 0 0 0 0 0 0 0 4 DAYS WITH SNOW OR SLEET 1 0 1 0 0 0 0 0 0 0 0 2 4 DAYS WITH DUST 0 5 6 9 8 14 20 23 6 5 0 0 96 WIND DIRECTION (PREVAILING) 45 225 225 45 45 45 45 45 45 45 225 225 45 PREVAILING WIND SPEED(KNOTS) 4.5 6.8 7.2 5.8 5.6 7.9 8.4 6.7 7.3 6.3 4.2 5.2 6.5 PREVAILING WIND PERCENT 25.2 37.9 36.1 24.0 37.4 46.0 45.2 47.1 49.3 26.5 32.7 25.8 31.0 CALMS PERCENT OF WIND 3.9 0.0 1.3 0.0 0.6 0.0 0.6 0.0 0.0 0.0 0.0 0.6 0.6 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 77 219 196 88 41 38 40 47 46 88 156 176 54 VECTOR WIND MAGNITUDE(KNOTS) 0.8 2.8 0.9 0.8 2.4 5.3 4.9 4.7 4.4 1.4 0.9 0.9 1.6 WIND STEADINESES (MEAN %) 21.1 50.9 15.0 13.8 44.4 73.6 71.0 75.8 73.3 26.9 20.5 19.1 28.6 WIND SPEED (MEAN KNOTS) 3.8 5.5 6.0 5.8 5.4 7.2 6.9 6.2 6.0 5.2 4.4 4.7 5.6 FASTEST WIND DIRECTION 50 260 230 50 270 30 40 50 360 360 50 50 260 FASTEST WIND SPEED (KNOTS) 12 20 18 18 18 16 20 16 18 18 10 14 20 DAY 24 28 13 2 26 5 23 9 9 1 10 20 DAYS WITH SKY CLEAR (0-2)/8 17 12 7 8 6 19 31 24 28 24 11 7 194 DAYS WITH P.CLOUDY (3-6)/8 10 11 12 16 16 7 0 7 2 7 12 16 116 DAYS WITH CLOUDY (7-8)/8 4 5 12 6 9 4 0 0 0 0 7 8 55 DAYS WITH VISIBILITY =< 2 KM 1 0 2 0 0 0 0 0 0 0 0 0 3 DURATION OF SUNSHINE HOURS 224.3 203.0 216.9 238.9 269.7 315.5 358.4 335.5 317.2 292.4 181.9 165.0 3118.7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1971 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 867.0 859.4 862.7 860.5 861.4 857.9 859.2 860.1 865.3 866.8 866.2 862.9 862.5 MAX. QFE PRESSURE IN HPA 875.5 867.4 868.8 869.1 868.0 863.1 862.8 864.9 871.2 875.4 874.6 870.7 875.5 DAY-HOUR 3- 6 4- 6 7- 6 9- 6 3- 6 17- 6 26- 6 21- 6 24- 6 11- 6 20- 6 11- 6 MIN. QFE PRESSURE IN HPA 854.2 847.2 853.8 850.6 855.2 851.6 854.9 856.2 858.9 859.8 859.5 855.4 847.2 DAY-HOUR 14- 3 14- 3 15-15 13-12 29-15 5-15 21-15 11-15 1-15 7-12 18-12 20- 9 MEAN QNH PRESSURE IN HPA 1019.0 1010.4 1014.1 1011.5 1012.6 1008.6 1010.1 1011.1 1017.0 1018.7 1018.1 1014.3 1013.8 MAX. QNH PRESSURE IN HPA 1028.7 1019.4 1021.0 1021.4 1020.1 1014.5 1014.2 1016.6 1023.8 1028.6 1027.6 1023.2 1028.7 DAY-HOUR 3- 6 4- 6 7- 6 9- 6 3- 6 17- 6 26- 6 21- 6 24- 6 11- 6 20- 6 11- 6 MIN. QNH PRESSURE IN HPA 1004.4 996.4 1003.9 1000.3 1005.5 1001.4 1005.2 1006.7 1009.7 1010.8 1010.4 1005.7 996.4 DAY-HOUR 14- 3 14- 3 15-15 13-12 29-15 5-15 21-15 11-15 1-15 7-12 18-12 20- 9 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 867.0 859.4 862.8 860.8 862.1 858.8 860.0 860.9 865.8 867.0 866.3 862.8 862.8 MAX. QFE PRESSURE IN HPA 874.0 865.3 868.1 867.9 867.0 862.2 862.7 864.7 870.5 874.8 873.2 869.3 874.8 DAY 3 4 7 28 3 9 26 21 24 11 20 11 MIN. QFE PRESSURE IN HPA 854.2 847.2 856.1 851.5 857.4 854.2 856.3 857.8 861.1 860.2 860.8 855.9 847.2 DAY 14 14 20 14 11 5 23 19 1 9 5 20 MEAN QNH PRESSURE IN HPA 1019.0 1010.3 1014.2 1012.0 1013.4 1009.6 1011.0 1012.1 1017.6 1018.9 1018.2 1014.2 1014.2 MAX. QNH PRESSURE IN HPA 1027.0 1017.0 1020.2 1020.0 1019.0 1013.5 1014.1 1016.4 1023.0 1027.9 1026.0 1021.6 1027.9 DAY 3 4 7 28 3 9 26 21 24 11 20 11 MIN. QNH PRESSURE IN HPA 1004.4 996.4 1006.5 1001.3 1008.0 1004.4 1006.8 1008.5 1012.2 1011.2 1011.9 1006.3 996.4 DAY 14 14 20 14 11 5 23 19 1 9 5 20 MEAN QFF PRESSURE IN HPA 1023.1 1012.6 1012.9 1008.5 1005.4 1000.4 1000.5 1002.0 1010.8 1016.2 1017.6 1016.2 1010.5 MAX. QFF PRESSURE IN HPA 1030.4 1022.4 1023.3 1017.6 1012.8 1005.5 1005.6 1007.2 1018.6 1026.4 1027.6 1023.7 1030.4 DAY 3 2 7 21 3 18 26 21 24 11 21 11 MIN. QFF PRESSURE IN HPA 1006.1 997.9 1000.5 996.8 998.5 995.0 996.1 997.4 1001.3 1005.0 1010.0 1007.8 995.0 DAY 14 14 15 14 30 29 23 19 1 9 5 20 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SHAHROUD (40739) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 25 N LONGITUDE 54 57 E DATA PROCESSING CENTER ELEVATION 1345.3 M MEANS AND EXTREMES FOR THE YEAR 1971 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 868.3 860.5 863.9 861.6 862.6 859.0 860.2 861.3 866.4 867.9 867.3 863.8 863.6 MAX. QFE PRESSURE IN HPA 875.5 867.4 868.8 869.1 868.0 863.1 862.8 864.9 871.2 875.4 874.6 870.7 875.5 DAY 3 4 7 9 3 17 26 21 24 11 20 11 MIN. QFE PRESSURE IN HPA 855.6 850.6 857.4 852.1 857.8 854.0 857.0 858.2 861.9 861.2 861.1 855.8 850.6 DAY 14 14 15 14 11 5 23 19 1 9 5 20 MEAN QNH PRESSURE IN HPA 1020.4 1011.6 1015.5 1012.8 1013.9 1009.9 1011.3 1012.5 1018.3 1020.0 1019.3 1015.3 1015.1 MAX. QNH PRESSURE IN HPA 1028.7 1019.4 1021.0 1021.4 1020.1 1014.5 1014.2 1016.6 1023.8 1028.6 1027.6 1023.2 1028.7 DAY 3 4 7 9 3 17 26 21 24 11 20 11 MIN. QNH PRESSURE IN HPA 1006.0 1000.3 1008.0 1002.0 1008.5 1004.2 1007.6 1008.9 1013.2 1012.4 1012.2 1006.2 1000.3 DAY 14 14 15 14 11 5 23 19 1 9 5 20 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 867.2 860.0 863.2 860.8 861.8 858.2 859.5 860.5 865.5 867.1 866.3 863.0 862.7 MAX. QFE PRESSURE IN HPA 874.3 867.2 867.8 868.4 866.6 862.3 862.1 864.1 870.1 873.9 873.6 870.2 874.3 DAY 3 4 7 28 3 17 26 21 24 11 20 11 MIN. QFE PRESSURE IN HPA 855.0 852.3 856.0 851.4 857.1 852.5 856.1 857.5 860.5 860.7 859.8 855.4 851.4 DAY 14 8 20 14 11 5 21 19 2 7 18 20 MEAN QNH PRESSURE IN HPA 1019.2 1011.0 1014.6 1011.9 1013.0 1008.9 1010.4 1011.5 1017.3 1019.1 1018.2 1014.4 1014.1 MAX. QNH PRESSURE IN HPA 1027.3 1019.2 1019.9 1020.6 1018.5 1013.6 1013.4 1015.7 1022.5 1026.8 1026.5 1022.6 1027.3 DAY 3 4 7 28 3 17 26 21 24 11 20 11 MIN. QNH PRESSURE IN HPA 1005.3 1002.2 1006.4 1001.2 1007.7 1002.4 1006.5 1008.1 1011.6 1011.8 1010.8 1005.7 1001.2 DAY 14 8 20 14 11 5 21 19 2 7 18 20 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 866.2 858.7 861.9 859.6 860.4 856.9 858.4 859.1 864.4 866.0 865.5 862.3 861.6 MAX. QFE PRESSURE IN HPA 873.3 865.8 866.8 867.9 865.5 861.7 861.0 862.2 869.2 872.1 873.0 869.1 873.3 DAY 4 4 3 28 2 17 26 21 23 11 20 11 MIN. QFE PRESSURE IN HPA 856.7 850.2 854.3 850.6 856.1 852.0 855.1 856.4 859.4 859.8 859.5 856.7 850.2 DAY 13 13 20 13 30 5 21 19 1 7 18 20 MEAN QNH PRESSURE IN HPA 1018.1 1009.5 1013.2 1010.6 1011.4 1007.4 1009.2 1009.9 1016.0 1017.8 1017.3 1013.6 1012.8 MAX. QNH PRESSURE IN HPA 1026.2 1017.6 1018.7 1020.0 1017.3 1012.9 1012.1 1013.5 1021.5 1024.8 1025.8 1021.4 1026.2 DAY 4 4 3 28 2 17 26 21 23 11 20 11 MIN. QNH PRESSURE IN HPA 1007.2 999.8 1004.5 1000.3 1006.5 1001.9 1005.4 1006.9 1010.3 1010.8 1010.4 1007.2 999.8 DAY 13 13 20 13 30 5 21 19 1 7 18 20 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** *****