STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 M MEANS AND EXTREMES FOR THE YEAR 1951 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.4 6.6 11.6 16.9 22.5 29.1 32.4 30.6 26.9 20.2 13.0 6.5 18.6 MINIMUN AIR TEMPERATURE (C) 0.2 0.2 3.7 7.1 11.7 14.6 18.4 17.5 13.6 9.9 4.8 0.8 8.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 1 7 7 0 0 0 0 15 DAYS WITH MINIMUM TEMP. <=-4 4 2 0 0 0 0 0 0 0 0 0 2 8 DAYS WITH FREEZING MIN.<= 0 14 15 1 0 0 0 0 0 0 0 1 14 45 TEMPERATURE RECORDS LOWEST(C) -6.0 -4.0 0.0 2.0 7.0 12.0 13.0 11.0 9.0 2.0 0.0 -4.0 -6.0 DAY 28 8 16 4 4 1 8 6 20 22 25 25 MAXIMUM AIR TEMPERATURE (C) 10.8 11.4 16.7 22.5 28.3 35.7 39.1 37.5 33.8 26.1 18.5 10.5 24.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 13 30 31 31 30 6 0 0 141 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 16.0 18.0 23.0 29.0 34.0 41.0 42.0 40.0 37.0 31.0 24.0 16.0 42.0 DAY 22 25 23 30 29 13 12 9 5 1 2 1 DIF. BETWEEN (MAX.-MIN.) (C) 10.6 11.2 13.0 15.4 16.6 21.1 20.7 20.0 20.2 16.2 13.7 9.7 15.7 MEAN DAILY TEMP. (MDT) (C) 5.5 5.8 10.2 14.8 20.0 25.2 28.7 27.5 23.7 18.0 11.6 5.7 16.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 26.5 125.5 239.5 202.0 81.0 6.0 0.0 0.0 680.5 HEATING DEG. DAYS(BASE 18 0C) 388.0 342.5 241.0 101.0 19.5 0.0 0.0 0.0 0.0 45.5 190.5 382.5 1710.5 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. 47.6 88.4 39.5 20.5 21.7 1.0 0.0 0.0 2.0 10.6 67.0 87.2 385.5 DAYS WITH PRECIPITATION >=10 2 3 2 1 1 0 0 0 0 0 3 3 15 DAYS WITH PRECIPITATION >= 5 2 6 3 1 1 0 0 0 0 1 3 4 21 DAYS WITH PRECIPITATION >= 1 7 10 7 5 3 0 0 0 1 3 5 7 48 DAYS WITH PRECIPITATION 9 11 12 8 5 2 0 0 1 8 6 8 70 GREATEST DAILY PRECIPITATION 19.0 23.0 13.0 12.0 14.0 0.6 0.0 0.0 2.0 7.0 26.0 30.0 30.0 DAY 7 11 26 2 6 2 ** ** 30 10 8 18 DAY WITH THUNDER STORM 0 0 1 0 2 0 0 0 1 3 0 1 8 DAYS WITH SNOW OR SLEET 0 1 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 360 360 360 360 360 360 360 360 360 180 90 360 360 PREVAILING WIND SPEED(KNOTS) 3.0 2.8 2.8 3.7 3.6 3.5 2.9 3.1 2.7 13.6 3.8 2.7 3.0 PREVAILING WIND PERCENT 53.5 52.9 31.6 38.7 30.3 28.7 38.1 34.2 32.7 16.1 32.0 32.3 34.1 CALMS PERCENT OF WIND 7.1 10.0 3.2 3.3 3.2 2.0 3.2 5.8 11.3 24.5 6.0 5.2 7.1 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 134 24 161 166 140 153 126 138 156 177 80 87 135 VECTOR WIND MAGNITUDE(KNOTS) 0.5 0.6 0.6 0.9 2.4 2.0 1.5 1.3 1.1 2.3 1.9 1.6 1.1 WIND STEADINESES (MEAN %) 11.4 19.4 13.6 15.3 41.4 40.0 34.9 31.7 24.4 39.0 61.3 36.4 23.9 WIND SPEED (MEAN KNOTS) 4.4 3.1 4.4 5.9 5.8 5.0 4.3 4.1 4.5 5.9 3.1 4.4 4.6 FASTEST WIND DIRECTION 180 180 180 130 180 180 180 180 180 180 180 180 180 FASTEST WIND SPEED (KNOTS) 44 30 24 25 30 24 24 18 30 24 13 30 44 DAY 23 20 11 15 2 6 15 31 16 8 2 15 DAYS WITH SKY CLEAR (0-2)/8 15 11 12 18 11 27 31 27 26 18 14 16 226 DAYS WITH P.CLOUDY (3-6)/8 8 10 10 9 18 3 0 4 4 12 10 8 96 DAYS WITH CLOUDY (7-8)/8 8 7 9 3 2 0 0 0 0 1 6 7 43 DAYS WITH VISIBILITY =< 2 KM 0 1 0 0 0 0 0 0 0 0 0 0 1 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 M MEANS AND EXTREMES FOR THE YEAR 1952 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.5 7.1 10.6 15.2 21.2 25.7 31.0 30.2 25.6 19.8 11.5 7.8 17.6 MINIMUN AIR TEMPERATURE (C) -0.7 1.7 4.0 8.3 12.4 14.1 20.7 20.0 15.0 8.3 3.7 1.6 9.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 1 15 15 1 0 0 0 32 DAYS WITH MINIMUM TEMP. <=-4 5 0 2 0 0 0 0 0 0 0 0 1 8 DAYS WITH FREEZING MIN.<= 0 23 13 4 0 0 0 0 0 0 0 3 11 54 TEMPERATURE RECORDS LOWEST(C) -6.0 -3.0 -5.0 2.0 9.0 10.0 16.0 13.0 11.0 4.0 -2.0 -4.0 -6.0 DAY 13 13 5 16 16 1 16 31 24 25 16 18 MAXIMUM AIR TEMPERATURE (C) 10.0 12.8 16.8 22.0 29.1 35.2 40.7 39.9 36.5 31.4 19.3 14.9 25.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 6 16 30 31 31 30 22 0 0 166 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 16.0 18.0 27.0 32.0 36.0 39.0 43.0 42.0 41.0 37.0 27.0 19.0 43.0 DAY 22 7 31 8 27 29 2 4 5 3 2 7 DIF. BETWEEN (MAX.-MIN.) (C) 10.7 11.1 12.8 13.7 16.7 21.1 20.0 19.9 21.5 23.1 15.6 13.3 16.6 MEAN DAILY TEMP. (MDT) (C) 4.6 7.2 10.4 15.1 20.7 24.7 30.7 29.9 25.7 19.9 11.5 8.2 17.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 31.0 110.5 300.5 277.0 141.5 20.0 0.0 0.0 880.5 HEATING DEG. DAYS(BASE 18 0C) 414.0 301.0 236.5 96.5 7.5 0.0 0.0 0.0 0.0 13.0 195.0 302.5 1566.0 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. 74.0 72.4 32.5 120.4 7.0 0.0 2.0 0.0 2.3 0.0 37.8 119.0 467.4 DAYS WITH PRECIPITATION >=10 2 1 2 3 0 0 0 0 0 0 1 5 14 DAYS WITH PRECIPITATION >= 5 4 6 3 7 1 0 0 0 0 0 2 5 28 DAYS WITH PRECIPITATION >= 1 8 10 5 10 2 0 1 0 1 0 4 8 49 DAYS WITH PRECIPITATION 8 10 5 11 2 0 1 0 4 0 4 8 53 GREATEST DAILY PRECIPITATION 31.0 28.0 10.5 49.0 5.0 0.0 2.0 0.0 2.0 0.0 26.0 46.0 49.0 DAY 28 12 4 22 10 ** 22 ** 10 ** 21 23 DAY WITH THUNDER STORM 0 0 1 5 0 0 0 0 1 0 1 0 8 DAYS WITH SNOW OR SLEET 2 1 0 0 0 0 0 0 0 0 0 1 4 DAYS WITH DUST 0 1 1 1 0 1 0 0 1 0 0 0 5 WIND DIRECTION (PREVAILING) 360 360 360 45 45 360 90 360 360 45 360 45 45 PREVAILING WIND SPEED(KNOTS) 4.3 3.4 3.9 3.5 3.5 4.0 4.4 3.8 4.5 3.9 3.6 3.9 3.9 PREVAILING WIND PERCENT 52.3 44.2 32.3 37.1 29.4 27.9 34.7 50.8 41.7 64.5 31.0 65.3 31.6 CALMS PERCENT OF WIND 10.3 3.7 2.0 2.1 0.8 1.3 0.4 0.8 0.4 0.4 0.4 1.6 1.7 NO. OF WIND OBSERVATION 155 190 248 240 248 240 248 248 240 248 239 248 2792 VECTOR WIND DIRECTION (MEAN) 27 77 99 76 90 80 74 54 48 56 68 49 66 VECTOR WIND MAGNITUDE(KNOTS) 2.6 2.0 3.5 2.6 1.9 2.6 2.9 2.8 3.4 3.0 2.8 3.2 2.6 WIND STEADINESES (MEAN %) 65.0 40.0 53.0 52.0 39.6 54.2 61.7 63.6 69.4 66.7 63.6 76.2 54.2 WIND SPEED (MEAN KNOTS) 4.0 5.0 6.6 5.0 4.8 4.8 4.7 4.4 4.9 4.5 4.4 4.2 4.8 FASTEST WIND DIRECTION 180 180 180 130 180 180 180 50 50 180 110 270 180 FASTEST WIND SPEED (KNOTS) 13 30 37 30 30 18 13 13 18 24 15 13 37 DAY 10 12 1 30 7 12 4 12 8 23 28 11 DAYS WITH SKY CLEAR (0-2)/8 14 14 12 12 14 30 22 21 26 29 17 18 229 DAYS WITH P.CLOUDY (3-6)/8 9 8 11 10 16 0 5 10 4 2 10 8 93 DAYS WITH CLOUDY (7-8)/8 8 6 8 8 1 0 4 0 0 0 3 5 43 DAYS WITH VISIBILITY =< 2 KM 1 0 0 1 0 0 0 0 0 0 0 0 2 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 M MEANS AND EXTREMES FOR THE YEAR 1953 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.8 7.6 8.7 15.9 20.4 25.5 30.3 30.2 25.4 19.2 10.9 3.6 17.0 MINIMUN AIR TEMPERATURE (C) 0.9 1.1 2.3 8.1 10.6 13.4 19.0 19.1 13.9 10.8 6.0 -0.7 8.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 13 10 0 0 0 0 23 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 4 4 DAYS WITH FREEZING MIN.<= 0 16 14 11 0 0 0 0 0 0 0 2 14 57 TEMPERATURE RECORDS LOWEST(C) -3.0 -2.0 -2.0 4.0 6.0 10.0 14.0 16.0 10.0 6.0 -1.0 -12.0 -12.0 DAY 27 13 9 12 9 16 1 23 18 29 22 22 MAXIMUM AIR TEMPERATURE (C) 13.1 13.6 14.3 23.0 28.9 35.2 39.6 39.1 35.8 28.5 16.5 8.5 24.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 11 30 31 31 30 16 0 0 149 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 17.0 19.0 21.0 29.0 34.0 39.0 44.0 42.0 41.0 36.0 25.0 13.0 44.0 DAY 5 14 28 18 19 22 13 10 1 2 9 1 DIF. BETWEEN (MAX.-MIN.) (C) 12.2 12.5 12.0 14.9 18.3 21.8 20.6 20.0 21.9 17.7 10.5 9.2 16.0 MEAN DAILY TEMP. (MDT) (C) 7.0 7.3 8.3 15.5 19.7 24.3 29.3 29.1 24.8 19.6 11.3 3.9 16.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 13.0 98.5 258.0 251.0 115.5 21.5 0.0 0.0 757.5 HEATING DEG. DAYS(BASE 18 0C) 341.0 298.5 302.0 76.5 3.0 0.0 0.0 0.0 0.0 25.5 201.5 436.5 1684.5 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. 101.0 128.0 63.9 46.3 23.0 0.3 0.0 0.0 0.0 26.3 207.3 105.0 701.1 DAYS WITH PRECIPITATION >=10 3 4 1 0 0 0 0 0 0 1 7 4 20 DAYS WITH PRECIPITATION >= 5 5 7 5 4 1 0 0 0 0 2 8 5 37 DAYS WITH PRECIPITATION >= 1 9 10 8 10 6 0 0 0 0 6 13 14 76 DAYS WITH PRECIPITATION 9 10 11 12 7 1 0 0 0 8 14 14 86 GREATEST DAILY PRECIPITATION 36.0 54.0 21.0 8.0 9.0 0.3 0.0 0.0 0.0 14.0 46.0 29.0 54.0 DAY 11 24 12 8 24 4 ** ** ** 30 18 4 DAY WITH THUNDER STORM 0 3 2 3 1 0 0 0 0 4 1 0 14 DAYS WITH SNOW OR SLEET 0 1 1 0 0 0 0 0 0 0 1 4 7 DAYS WITH DUST 0 0 0 0 0 1 0 0 0 0 0 0 1 WIND DIRECTION (PREVAILING) 360 90 90 90 360 360 360 360 360 360 360 360 360 PREVAILING WIND SPEED(KNOTS) 4.3 4.9 5.4 4.6 4.2 4.0 4.5 4.6 4.6 4.7 4.1 4.7 4.5 PREVAILING WIND PERCENT 38.9 35.7 34.3 34.2 35.5 35.4 39.5 42.3 45.0 49.6 38.1 44.1 37.4 CALMS PERCENT OF WIND 0.8 0.4 0.4 1.3 0.0 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.3 NO. OF WIND OBSERVATION 247 224 248 240 248 240 248 248 240 248 239 247 2917 VECTOR WIND DIRECTION (MEAN) 54 76 108 63 69 61 60 56 53 47 59 43 61 VECTOR WIND MAGNITUDE(KNOTS) 3.4 3.2 3.2 2.9 2.7 3.0 2.7 3.2 3.2 3.3 2.9 3.9 3.0 WIND STEADINESES (MEAN %) 72.3 64.0 48.5 59.2 54.0 65.2 51.9 61.5 64.0 66.0 61.7 83.0 58.8 WIND SPEED (MEAN KNOTS) 4.7 5.0 6.6 4.9 5.0 4.6 5.2 5.2 5.0 5.0 4.7 4.7 5.1 FASTEST WIND DIRECTION 180 180 180 180 180 180 10 360 180 180 270 360 180 FASTEST WIND SPEED (KNOTS) 18 18 30 18 18 13 15 13 17 18 18 9 30 DAY 11 19 15 26 7 8 12 4 19 23 19 4 DAYS WITH SKY CLEAR (0-2)/8 11 10 9 10 16 25 27 27 29 20 12 8 204 DAYS WITH P.CLOUDY (3-6)/8 10 6 14 11 11 5 4 4 1 7 7 8 88 DAYS WITH CLOUDY (7-8)/8 10 12 8 9 4 0 0 0 0 4 11 15 73 DAYS WITH VISIBILITY =< 2 KM 0 1 0 0 0 0 0 0 0 0 0 2 3 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 M MEANS AND EXTREMES FOR THE YEAR 1954 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.4 6.9 10.6 14.7 21.6 26.6 30.0 30.0 25.3 19.4 11.5 7.7 17.5 MINIMUN AIR TEMPERATURE (C) -0.3 2.0 5.0 9.0 12.3 16.6 20.4 20.6 15.1 10.3 7.9 3.7 10.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 1 15 13 1 0 0 0 30 DAYS WITH MINIMUM TEMP. <=-4 1 0 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH FREEZING MIN.<= 0 18 5 3 0 0 0 0 0 0 0 0 0 26 TEMPERATURE RECORDS LOWEST(C) -4.0 -3.0 -1.0 4.0 8.0 14.0 16.0 16.0 11.0 7.0 3.0 1.0 -4.0 DAY 6 1 1 7 14 3 1 24 13 21 17 8 MAXIMUM AIR TEMPERATURE (C) 11.5 12.3 16.7 20.6 31.1 36.1 39.0 39.5 35.5 29.1 16.5 13.3 25.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 1 22 30 31 31 30 16 0 0 161 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 16.0 18.0 24.0 30.0 36.0 38.0 42.0 41.0 39.0 35.0 23.0 18.0 42.0 DAY 25 23 22 29 30 13 20 2 1 1 12 16 DIF. BETWEEN (MAX.-MIN.) (C) 11.8 10.3 11.7 11.6 18.8 19.5 18.6 18.9 20.4 18.8 8.6 9.6 14.9 MEAN DAILY TEMP. (MDT) (C) 5.6 7.2 10.9 14.8 21.7 26.3 29.7 30.0 25.3 19.7 12.2 8.5 17.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 2.5 43.5 160.0 269.0 280.5 129.5 11.0 0.0 0.0 896.0 HEATING DEG. DAYS(BASE 18 0C) 385.0 303.5 221.5 118.0 1.0 0.0 0.0 0.0 0.0 11.0 174.0 294.5 1508.5 DEWPOINT (MEAN C) ***** ***** ***** ***** 6.2 7.9 9.3 9.7 5.8 5.3 6.7 2.8 ***** MIXING RATIO (G/KG) ****** ****** ****** ****** 6.94 7.89 8.63 8.80 6.74 6.47 7.05 5.38 ****** VAPOUR PRESSURE (HPA) ****** ****** ****** ****** 9.73 10.99 11.98 12.21 9.41 9.09 9.92 7.59 ****** SATURATION DEF. (HPA) ****** ****** ****** ****** 17.96 25.94 32.71 32.33 25.17 15.00 4.10 3.18 ****** RELATIVE HUMIDITY (MEAN %) *** *** *** *** 40 34 30 31 31 43 74 73 *** RELATIVE HUMIDITY (MAX. %) *** *** *** *** 64 55 48 48 47 61 87 85 *** RELATIVE HUMIDITY (MIN. %) *** *** *** *** 19 17 16 17 17 25 57 56 *** RELATIVE HUMIDITY (MEAN% 03UTC) *** *** *** *** 63 55 46 45 46 58 83 82 *** RELATIVE HUMIDITY (MEAN% 09UTC) *** *** *** *** 23 21 22 20 19 29 64 60 *** RELATIVE HUMIDITY (MEAN% 15UTC) *** *** *** *** 30 22 20 24 23 34 69 72 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 42.0 141.5 146.2 101.0 0.0 0.0 0.0 4.0 0.0 13.0 147.2 107.0 701.9 DAYS WITH PRECIPITATION >=10 1 6 6 4 0 0 0 0 0 0 5 4 26 DAYS WITH PRECIPITATION >= 5 4 8 10 8 0 0 0 0 0 2 12 4 48 DAYS WITH PRECIPITATION >= 1 11 12 13 11 0 0 0 2 0 2 17 10 78 DAYS WITH PRECIPITATION 11 14 15 13 0 0 2 5 0 3 23 11 97 GREATEST DAILY PRECIPITATION 10.0 34.0 29.0 23.0 0.0 0.0 0.0 3.0 0.0 8.0 43.0 35.0 43.0 DAY 9 20 14 6 ** ** ** 18 ** 15 24 6 DAY WITH THUNDER STORM 1 0 2 4 0 1 0 0 0 2 5 2 17 DAYS WITH SNOW OR SLEET 1 1 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 1 1 WIND DIRECTION (PREVAILING) 360 360 90 90 360 45 45 45 45 360 45 45 360 PREVAILING WIND SPEED(KNOTS) 4.3 4.6 4.8 5.2 5.3 4.9 4.1 4.7 4.4 4.7 2.9 2.4 4.8 PREVAILING WIND PERCENT 35.5 37.9 39.5 43.8 36.3 27.9 31.5 38.3 31.3 31.5 37.1 28.6 27.3 CALMS PERCENT OF WIND 0.0 0.0 0.0 0.0 0.0 0.0 7.7 7.3 10.0 4.0 12.5 15.7 4.8 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 66 69 65 80 56 71 67 54 70 57 57 61 65 VECTOR WIND MAGNITUDE(KNOTS) 2.9 3.1 3.3 3.4 3.3 3.5 2.6 3.5 2.6 3.1 2.1 1.5 2.9 WIND STEADINESES (MEAN %) 58.0 58.5 64.7 61.8 61.1 68.6 57.8 72.9 56.5 67.4 72.4 65.2 63.0 WIND SPEED (MEAN KNOTS) 5.0 5.3 5.1 5.5 5.4 5.1 4.5 4.8 4.6 4.6 2.9 2.3 4.6 FASTEST WIND DIRECTION 180 130 130 90 180 130 180 360 180 360 360 360 90 FASTEST WIND SPEED (KNOTS) 24 18 21 25 18 13 18 24 24 13 13 13 25 DAY 11 4 18 17 11 6 7 2 16 1 6 7 DAYS WITH SKY CLEAR (0-2)/8 11 6 9 5 22 29 25 18 29 18 3 9 184 DAYS WITH P.CLOUDY (3-6)/8 9 9 10 16 9 1 6 13 1 12 15 11 112 DAYS WITH CLOUDY (7-8)/8 11 13 12 9 0 0 0 0 0 1 12 11 69 DAYS WITH VISIBILITY =< 2 KM 0 1 1 0 0 0 0 0 0 0 0 0 2 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 ****** ****** ****** ****** 882.0 877.8 876.6 875.9 878.3 884.1 885.3 885.5 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 887.3 883.1 880.4 882.0 882.0 888.4 890.5 893.5 ****** DAY-HOUR **-** **-** **-** **-** 24- 6 1- 3 30- 6 31- 3 23- 6 12- 6 5- 6 15- 6 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 876.1 873.1 872.5 869.0 873.3 878.2 875.9 874.9 ****** DAY-HOUR **-** **-** **-** **-** 27-15 9-12 11-12 10-12 16-12 2-15 8- 9 30-18 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1012.1 1007.4 1006.1 1005.3 1008.0 1014.5 1015.8 1016.0 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1018.1 1013.4 1010.3 1012.1 1012.1 1019.3 1021.6 1025.0 ****** DAY-HOUR **-** **-** **-** **-** 24- 6 1- 3 30- 6 31- 3 23- 6 12- 6 5- 6 15- 6 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1005.5 1002.2 1001.5 997.6 1002.4 1007.9 1005.3 1004.2 ****** DAY-HOUR **-** **-** **-** **-** 27-15 9-12 11-12 10-12 16-12 2-15 8- 9 30-18 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1005.1 998.1 995.3 994.5 999.4 1008.6 1013.5 1015.7 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1011.7 1006.2 1000.8 1002.8 1005.7 1015.0 1018.6 1026.6 ****** DAY-HOUR **-** **-** **-** **-** 16- 3 3- 3 30- 3 31- 3 29- 3 21- 3 5- 6 15- 6 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 998.0 992.4 990.1 986.6 993.3 999.0 1000.5 1003.5 ****** DAY-HOUR **-** **-** **-** **-** 27-12 13-12 11-12 10-12 4-12 1-12 8- 9 6-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 882.5 878.4 877.1 876.5 878.9 884.6 885.7 885.7 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 886.0 883.0 880.0 881.5 881.4 887.7 889.7 893.3 ****** DAY ** ** ** ** 1 1 30 31 29 23 6 16 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 879.2 875.0 874.4 870.6 875.3 879.5 882.0 879.0 ****** DAY ** ** ** ** 7 6 27 10 16 3 28 7 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1012.7 1008.1 1006.7 1006.0 1008.7 1015.0 1016.3 1016.3 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1016.6 1013.2 1009.9 1011.6 1011.5 1018.5 1020.7 1024.8 ****** DAY ** ** ** ** 1 1 30 31 29 23 6 16 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1009.0 1004.3 1003.6 999.4 1004.6 1009.3 1012.1 1008.8 ****** DAY ** ** ** ** 7 6 27 10 16 3 28 7 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1005.5 998.6 995.7 994.8 999.7 1008.6 1013.5 1015.5 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1010.1 1004.4 999.5 1000.8 1004.2 1013.6 1016.7 1024.5 ****** DAY ** ** ** ** 1 3 30 31 29 21 16 16 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 1001.1 994.4 992.1 988.2 996.1 1001.1 1008.5 1007.5 ****** DAY ** ** ** ** 13 6 27 10 11 1 1 7 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 882.8 878.7 877.3 876.8 879.2 884.8 885.9 885.8 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 886.6 883.1 880.1 882.0 881.6 888.0 889.9 893.2 ****** DAY ** ** ** ** 25 1 30 31 23 23 5 16 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 877.3 875.1 874.6 870.9 875.2 880.3 882.3 878.5 ****** DAY ** ** ** ** 27 6 27 10 16 1 27 30 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1013.0 1008.4 1006.9 1006.3 1009.0 1015.3 1016.5 1016.4 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1017.3 1013.4 1010.0 1012.1 1011.7 1018.8 1021.0 1024.7 ****** DAY ** ** ** ** 25 1 30 31 23 23 5 16 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1006.9 1004.4 1003.9 999.7 1004.5 1010.2 1012.5 1008.2 ****** DAY ** ** ** ** 27 6 27 10 16 1 27 30 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1007.1 1000.2 997.2 996.7 1001.7 1010.5 1014.7 1016.6 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1011.7 1006.2 1000.8 1002.8 1005.7 1015.0 1018.5 1026.0 ****** DAY ** ** ** ** 16 3 30 31 29 21 16 15 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 999.9 995.7 993.4 989.4 997.1 1003.1 1011.3 1007.3 ****** DAY ** ** ** ** 27 6 26 10 16 1 1 30 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 ****** ****** ****** ****** 883.1 878.5 877.3 877.1 879.5 885.5 886.5 886.8 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 887.3 882.9 880.4 881.5 882.0 888.4 890.5 893.5 ****** DAY ** ** ** ** 24 2 30 31 23 12 5 15 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 877.7 874.9 874.3 871.5 874.9 881.3 882.6 879.5 ****** DAY ** ** ** ** 27 9 11 11 16 1 30 30 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1013.3 1008.3 1006.9 1006.7 1009.3 1016.0 1017.2 1017.5 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1018.1 1013.1 1010.3 1011.6 1012.1 1019.3 1021.6 1025.0 ****** DAY ** ** ** ** 24 2 30 31 23 12 5 15 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1007.3 1004.2 1003.5 1000.4 1004.2 1011.3 1012.8 1009.3 ****** DAY ** ** ** ** 27 9 11 11 16 1 30 30 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1006.1 998.7 995.8 995.8 1000.6 1010.2 1015.1 1017.8 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1010.1 1004.3 999.9 1000.4 1005.1 1014.8 1018.6 1026.6 ****** DAY ** ** ** ** 1 2 30 31 29 21 5 15 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 999.1 994.9 992.1 989.0 995.8 1002.7 1012.0 1008.5 ****** DAY ** ** ** ** 27 6 27 11 16 1 30 30 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 882.3 877.7 876.7 876.1 878.4 884.2 885.3 885.6 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 886.6 882.2 880.2 880.3 881.6 887.9 889.9 892.5 ****** DAY ** ** ** ** 24 2 30 31 23 13 5 15 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 877.1 873.8 873.8 870.8 874.0 880.0 875.9 878.6 ****** DAY ** ** ** ** 27 9 11 10 16 1 8 6 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1012.4 1007.3 1006.2 1005.5 1008.1 1014.6 1015.9 1016.2 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1017.3 1012.4 1010.1 1010.2 1011.7 1018.7 1021.0 1023.9 ****** DAY ** ** ** ** 24 2 30 31 23 13 5 15 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1006.7 1003.0 1003.0 999.6 1003.2 1009.9 1005.3 1008.3 ****** DAY ** ** ** ** 27 9 11 10 16 1 8 6 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1004.8 997.4 994.5 993.8 998.7 1007.8 1012.9 1015.2 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1008.8 1003.4 998.2 998.3 1002.3 1012.7 1017.1 1023.0 ****** DAY ** ** ** ** 24 3 31 31 29 21 5 15 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 998.2 992.9 990.4 987.6 994.3 1000.3 1000.5 1007.0 ****** DAY ** ** ** ** 27 6 26 8 16 1 8 6 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 881.0 876.8 875.6 874.7 877.0 882.7 884.3 884.3 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 885.2 881.1 878.7 878.8 880.2 886.2 888.2 891.1 ****** DAY ** ** ** ** 24 2 30 30 21 20 5 15 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 876.4 873.1 872.5 869.0 873.3 878.5 879.8 875.9 ****** DAY ** ** ** ** 27 9 11 10 16 2 27 30 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1011.0 1006.3 1005.0 1004.0 1006.6 1012.9 1014.7 1014.6 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1015.7 1011.1 1008.4 1008.6 1010.1 1016.8 1019.1 1022.3 ****** DAY ** ** ** ** 24 2 30 30 21 20 5 15 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1005.9 1002.2 1001.5 997.6 1002.4 1008.2 1009.7 1005.3 ****** DAY ** ** ** ** 27 9 11 10 16 2 27 30 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1003.8 996.9 994.0 992.9 997.5 1006.5 1011.9 1013.8 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1008.0 1001.9 997.6 997.5 1002.2 1011.4 1015.8 1022.2 ****** DAY ** ** ** ** 16 2 30 31 21 20 18 15 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 998.0 992.4 990.1 986.6 993.3 999.0 1008.2 1004.9 ****** DAY ** ** ** ** 27 13 11 10 4 1 2 30 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 ****** ****** ****** ****** 880.6 876.7 875.6 874.6 876.9 882.9 884.7 885.0 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 884.8 881.1 878.8 878.8 879.7 886.0 888.9 892.2 ****** DAY ** ** ** ** 24 2 30 2 23 20 6 15 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 876.1 873.1 872.7 869.0 874.1 878.2 880.0 875.9 ****** DAY ** ** ** ** 27 13 11 10 16 2 27 30 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1010.5 1006.3 1005.0 1003.8 1006.4 1013.1 1015.1 1015.5 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1015.3 1011.1 1008.6 1008.6 1009.6 1016.6 1019.8 1023.5 ****** DAY ** ** ** ** 24 2 30 2 23 20 6 15 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1005.5 1002.2 1001.7 997.6 1003.3 1007.9 1009.9 1005.3 ****** DAY ** ** ** ** 27 13 11 10 16 2 27 30 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1004.6 998.0 995.3 994.1 998.9 1008.2 1013.3 1015.6 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1008.9 1003.4 999.1 998.7 1003.7 1012.6 1016.7 1024.6 ****** DAY ** ** ** ** 16 3 30 30 28 21 6 15 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 998.6 993.4 990.8 987.5 995.3 1001.1 1008.9 1005.1 ****** DAY ** ** ** ** 27 13 21 10 6 1 27 30 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 881.8 877.7 876.4 875.6 878.2 884.1 885.0 885.4 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 885.1 882.9 879.5 880.0 880.9 887.3 889.5 893.4 ****** DAY ** ** ** ** 24 2 23 30 28 20 5 15 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 877.4 874.6 873.2 870.1 875.5 880.0 876.3 874.9 ****** DAY ** ** ** ** 26 9 26 10 15 1 8 30 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1011.9 1007.3 1005.8 1005.0 1007.9 1014.5 1015.5 1015.9 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1015.6 1013.1 1009.3 1009.9 1010.9 1018.1 1020.5 1024.9 ****** DAY ** ** ** ** 24 2 23 30 28 20 5 15 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1007.0 1003.9 1002.3 998.8 1004.9 1009.9 1005.8 1004.2 ****** DAY ** ** ** ** 26 9 26 10 15 1 8 30 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1004.6 997.8 994.8 994.1 999.2 1008.7 1013.5 1016.2 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1008.5 1004.2 998.6 998.7 1003.6 1013.7 1017.3 1026.4 ****** DAY ** ** ** ** 9 2 23 30 28 20 5 15 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 998.8 994.8 990.1 987.7 994.7 1002.0 1002.7 1003.9 ****** DAY ** ** ** ** 26 5 26 10 3 2 8 30 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 882.1 877.9 876.8 876.0 878.6 884.5 885.4 885.5 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 885.1 882.8 879.6 881.1 881.3 887.5 889.5 893.4 ****** DAY ** ** ** ** 8 2 30 30 28 20 5 15 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 877.7 874.8 874.0 870.5 874.9 880.4 881.5 876.0 ****** DAY ** ** ** ** 26 9 26 9 15 1 27 6 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1012.2 1007.6 1006.3 1005.5 1008.3 1014.9 1015.9 1016.1 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1015.6 1013.0 1009.4 1011.1 1011.3 1018.3 1020.5 1024.9 ****** DAY ** ** ** ** 8 2 30 30 28 20 5 15 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1007.3 1004.1 1003.2 999.3 1004.2 1010.3 1011.6 1005.4 ****** DAY ** ** ** ** 26 9 26 9 15 1 27 6 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1004.6 997.6 994.8 993.8 998.9 1008.2 1013.1 1015.2 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1008.9 1003.7 998.8 999.8 1003.2 1012.9 1016.4 1024.2 ****** DAY ** ** ** ** 8 2 30 30 28 20 5 15 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 998.8 993.9 990.9 987.6 995.1 1001.7 1009.1 1003.5 ****** DAY ** ** ** ** 26 5 26 10 2 2 12 6 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 M MEANS AND EXTREMES FOR THE YEAR 1955 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.9 8.4 10.0 16.1 19.8 26.7 28.9 29.1 25.1 19.1 12.8 7.1 17.3 MINIMUN AIR TEMPERATURE (C) 0.5 2.5 5.7 8.8 12.0 16.4 17.0 18.4 14.2 9.7 6.7 3.4 9.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 1 7 0 0 0 0 8 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 17 5 0 0 0 0 0 0 0 0 0 7 29 TEMPERATURE RECORDS LOWEST(C) -3.0 -2.0 2.0 3.0 7.0 13.0 15.0 13.0 11.0 5.0 1.0 -1.0 -3.0 DAY 11 24 9 11 4 5 4 28 26 28 26 7 MAXIMUM AIR TEMPERATURE (C) 11.7 15.8 15.5 23.8 28.0 36.0 38.7 39.8 36.5 30.1 21.0 12.9 25.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 15 30 31 31 30 19 0 0 156 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 15.0 24.0 24.0 29.0 34.0 40.0 42.0 43.0 41.0 35.0 28.0 18.0 43.0 DAY 18 28 1 6 28 17 17 20 4 4 5 1 DIF. BETWEEN (MAX.-MIN.) (C) 11.2 13.3 9.8 15.0 16.0 19.6 21.7 21.4 22.3 20.4 14.3 9.5 16.2 MEAN DAILY TEMP. (MDT) (C) 6.1 9.2 10.6 16.3 20.0 26.2 27.9 29.1 25.3 19.9 13.9 8.1 17.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 26.0 155.0 212.5 251.0 130.5 13.0 0.0 0.0 788.0 HEATING DEG. DAYS(BASE 18 0C) 369.0 247.5 229.5 57.0 21.5 0.0 0.0 0.0 0.0 10.0 124.0 305.5 1364.0 DEWPOINT (MEAN C) -0.3 0.1 3.2 6.1 9.2 8.8 8.0 8.0 5.5 2.1 3.8 2.3 4.7 MIXING RATIO (G/KG) 4.29 4.46 5.59 6.88 8.42 8.22 7.91 7.77 6.53 5.19 5.83 5.20 6.36 VAPOUR PRESSURE (HPA) 6.07 6.29 7.83 9.64 11.75 11.42 10.95 10.78 9.13 7.31 8.20 7.33 8.89 SATURATION DEF. (HPA) 2.92 5.38 5.00 9.77 12.91 26.08 31.69 32.31 25.35 16.43 7.22 3.01 14.84 RELATIVE HUMIDITY (MEAN %) 71 59 67 56 55 35 30 29 31 35 58 73 50 RELATIVE HUMIDITY (MAX. %) 85 79 83 79 76 54 50 45 48 53 76 87 68 RELATIVE HUMIDITY (MIN. %) 50 36 48 33 31 20 16 16 17 19 35 53 31 RELATIVE HUMIDITY (MEAN% 03UTC) 83 77 81 77 75 54 50 44 46 49 74 84 66 RELATIVE HUMIDITY (MEAN% 09UTC) 55 44 56 40 39 22 19 17 19 24 41 61 36 RELATIVE HUMIDITY (MEAN% 15UTC) 65 48 57 43 43 26 20 20 22 26 49 66 40 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 49.5 16.0 168.6 76.0 35.9 3.0 0.0 0.0 0.0 0.6 31.8 68.7 450.1 DAYS WITH PRECIPITATION >=10 1 1 9 2 1 0 0 0 0 0 0 3 17 DAYS WITH PRECIPITATION >= 5 3 1 11 5 2 0 0 0 0 0 4 6 32 DAYS WITH PRECIPITATION >= 1 5 2 14 6 4 2 0 0 0 0 8 10 51 DAYS WITH PRECIPITATION 8 2 16 8 9 2 0 0 0 1 10 15 71 GREATEST DAILY PRECIPITATION 33.3 15.0 24.0 42.0 24.0 2.0 0.0 0.0 0.0 0.6 7.0 18.0 42.0 DAY 13 1 7 28 3 4 ** ** ** 7 9 26 DAY WITH THUNDER STORM 0 0 2 6 4 0 0 0 0 1 6 3 22 DAYS WITH SNOW OR SLEET 3 0 0 0 0 0 0 0 0 0 0 0 3 DAYS WITH DUST 0 1 0 3 0 0 0 0 0 0 0 0 4 WIND DIRECTION (PREVAILING) 45 45 45 45 45 90 90 45 45 45 90 90 45 PREVAILING WIND SPEED(KNOTS) 2.1 3.2 2.6 2.6 2.5 2.6 2.4 2.1 2.2 2.7 2.2 2.1 2.4 PREVAILING WIND PERCENT 41.9 28.1 31.9 35.0 34.3 35.4 34.3 38.3 37.5 42.7 31.7 34.3 32.4 CALMS PERCENT OF WIND 11.7 11.2 10.1 5.4 12.1 8.3 8.9 8.5 7.9 5.6 2.9 1.6 7.8 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 52 105 85 87 74 88 99 77 85 78 105 99 88 VECTOR WIND MAGNITUDE(KNOTS) 1.5 2.7 2.0 2.0 2.0 2.0 1.9 1.6 1.8 1.7 1.8 1.7 1.8 WIND STEADINESES (MEAN %) 71.4 62.8 60.6 54.1 69.0 64.5 67.9 72.7 72.0 65.4 64.3 68.0 62.1 WIND SPEED (MEAN KNOTS) 2.1 4.3 3.3 3.7 2.9 3.1 2.8 2.2 2.5 2.6 2.8 2.5 2.9 FASTEST WIND DIRECTION 360 50 310 220 310 130 310 270 130 230 10 180 50 FASTEST WIND SPEED (KNOTS) 9 37 18 24 13 18 13 9 13 12 13 12 37 DAY 24 23 4 9 21 6 1 5 28 5 21 8 DAYS WITH SKY CLEAR (0-2)/8 18 13 8 17 18 27 31 29 30 28 10 10 239 DAYS WITH P.CLOUDY (3-6)/8 5 11 7 8 12 3 0 2 0 3 14 10 75 DAYS WITH CLOUDY (7-8)/8 8 4 16 5 1 0 0 0 0 0 6 11 51 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 0 0 0 0 0 0 2 0 2 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 886.1 883.4 880.0 881.8 880.2 875.9 873.3 874.2 878.5 883.4 884.4 883.4 880.4 MAX. QFE PRESSURE IN HPA 893.0 890.7 886.2 886.3 885.0 880.6 878.0 878.5 885.0 889.9 891.3 891.0 893.0 DAY-HOUR 9- 6 8- 6 31- 6 2- 3 17- 6 1- 3 10- 6 22- 6 21- 6 15- 9 26- 6 2- 6 MIN. QFE PRESSURE IN HPA 878.7 874.6 872.9 874.6 873.8 870.3 868.6 869.3 871.3 877.5 878.5 874.8 868.6 DAY-HOUR 26-12 23- 0 12-15 9-12 2-12 22-15 28-12 7-15 1-12 1-12 24-12 29-12 MEAN QNH PRESSURE IN HPA 1016.7 1013.7 1009.9 1011.9 1010.2 1005.3 1002.3 1003.4 1008.2 1013.7 1014.9 1013.7 1010.3 MAX. QNH PRESSURE IN HPA 1024.4 1021.9 1016.8 1016.9 1015.5 1010.6 1007.7 1008.2 1015.5 1021.0 1022.5 1022.2 1024.4 DAY-HOUR 9- 6 8- 6 31- 6 2- 3 17- 6 1- 3 10- 6 22- 6 21- 6 15- 9 26- 6 2- 6 MIN. QNH PRESSURE IN HPA 1008.4 1003.9 1002.0 1003.9 1003.0 999.0 997.1 997.9 1000.2 1007.1 1008.2 1004.1 997.1 DAY-HOUR 26-12 23- 0 12-15 9-12 2-12 22-15 28-12 7-15 1-12 1-12 24-12 29-12 MEAN QFF PRESSURE IN HPA 1017.9 1013.1 1008.3 1007.4 1003.9 995.9 992.0 993.0 999.6 1008.0 1012.0 1013.6 1005.4 MAX. QFF PRESSURE IN HPA 1028.0 1023.1 1015.6 1013.3 1010.9 1003.8 997.9 999.2 1007.6 1015.2 1023.1 1023.5 1028.0 DAY-HOUR 9- 6 8- 6 29- 3 1- 3 9- 3 4-15 11- 3 30- 3 21- 3 22- 6 26- 6 23- 6 MIN. QFF PRESSURE IN HPA 1008.0 1000.1 998.0 999.6 995.5 988.7 987.2 987.2 990.6 998.9 1004.6 1002.7 987.2 DAY-HOUR 26-21 23- 0 4-12 9-12 21-12 29-12 20-12 5-12 1-12 1-12 24-12 29-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 886.1 883.5 880.1 882.2 880.5 876.5 873.9 874.8 878.9 883.7 884.7 883.7 880.7 MAX. QFE PRESSURE IN HPA 891.3 887.6 885.2 886.2 884.4 880.3 877.8 877.5 884.1 887.8 890.0 889.3 891.3 DAY 10 8 30 2 17 1 11 23 21 23 26 3 MIN. QFE PRESSURE IN HPA 879.7 874.6 874.0 876.3 875.4 872.0 870.9 871.8 873.5 878.7 880.0 876.5 870.9 DAY 27 23 13 10 3 23 28 7 1 1 24 29 MEAN QNH PRESSURE IN HPA 1016.7 1013.8 1010.0 1012.4 1010.5 1006.0 1003.0 1004.0 1008.7 1014.0 1015.1 1014.0 1010.7 MAX. QNH PRESSURE IN HPA 1022.5 1018.4 1015.7 1016.8 1014.8 1010.2 1007.4 1007.1 1014.5 1018.6 1021.1 1020.3 1022.5 DAY 10 8 30 2 17 1 11 23 21 23 26 3 MIN. QNH PRESSURE IN HPA 1009.6 1003.9 1003.2 1005.8 1004.7 1000.9 999.7 1000.7 1002.6 1008.4 1009.9 1006.0 999.7 DAY 27 23 13 10 3 23 28 7 1 1 24 29 MEAN QFF PRESSURE IN HPA 1017.3 1012.8 1008.1 1007.6 1004.0 996.5 992.5 993.2 999.6 1007.6 1011.8 1013.5 1005.4 MAX. QFF PRESSURE IN HPA 1023.9 1018.4 1013.9 1011.6 1010.1 1001.7 996.5 996.6 1005.5 1012.7 1020.5 1020.0 1023.9 DAY 10 25 29 2 9 1 11 30 21 23 26 23 MIN. QFF PRESSURE IN HPA 1009.3 1000.1 998.2 1001.7 997.9 990.8 988.6 989.4 993.4 1000.6 1006.2 1005.3 988.6 DAY 27 23 4 25 24 23 18 15 1 1 24 8 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 886.0 883.6 880.2 882.2 880.8 876.7 874.2 875.1 879.3 884.1 884.9 883.8 880.9 MAX. QFE PRESSURE IN HPA 891.1 888.2 885.2 886.3 884.8 880.6 877.8 878.0 884.4 887.9 890.6 889.3 891.1 DAY 9 8 31 2 17 1 11 22 21 22 26 2 MIN. QFE PRESSURE IN HPA 880.5 875.2 873.3 876.4 876.0 872.3 871.0 871.4 873.7 878.9 879.8 876.4 871.0 DAY 27 23 12 10 24 23 29 7 1 1 24 29 MEAN QNH PRESSURE IN HPA 1016.6 1013.9 1010.1 1012.4 1010.8 1006.3 1003.4 1004.4 1009.1 1014.5 1015.4 1014.2 1010.9 MAX. QNH PRESSURE IN HPA 1022.3 1019.1 1015.7 1016.9 1015.3 1010.6 1007.4 1007.7 1014.8 1018.7 1021.7 1020.3 1022.3 DAY 9 8 31 2 17 1 11 22 21 22 26 2 MIN. QNH PRESSURE IN HPA 1010.5 1004.5 1002.4 1005.9 1005.4 1001.3 999.8 1000.3 1002.9 1008.7 1009.7 1005.9 999.8 DAY 27 23 12 10 24 23 29 7 1 1 24 29 MEAN QFF PRESSURE IN HPA 1018.3 1014.1 1009.1 1008.9 1005.5 998.1 994.4 995.3 1001.8 1009.9 1013.3 1014.6 1006.9 MAX. QFF PRESSURE IN HPA 1025.5 1019.9 1015.6 1013.3 1010.9 1003.8 997.9 999.2 1007.6 1014.3 1022.6 1021.9 1025.5 DAY 9 25 29 1 9 5 11 30 21 22 26 23 MIN. QFF PRESSURE IN HPA 1010.3 1002.6 999.1 1003.1 999.3 992.5 990.9 990.7 995.2 1002.6 1006.4 1005.9 990.7 DAY 26 23 4 25 24 23 18 15 1 1 24 29 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 888.3 885.6 881.1 882.8 881.0 876.7 874.0 875.3 879.6 884.8 885.6 884.8 881.6 MAX. QFE PRESSURE IN HPA 893.0 890.7 886.2 886.3 885.0 880.6 878.0 878.5 885.0 889.0 891.3 891.0 893.0 DAY 9 8 31 2 17 1 10 22 21 22 26 2 MIN. QFE PRESSURE IN HPA 882.0 878.4 873.3 876.9 876.6 872.3 870.6 871.3 873.2 879.6 879.9 877.0 870.6 DAY 27 23 12 9 24 23 28 7 1 1 24 29 MEAN QNH PRESSURE IN HPA 1019.1 1016.1 1011.1 1013.0 1011.1 1006.2 1003.2 1004.6 1009.4 1015.3 1016.2 1015.3 1011.7 MAX. QNH PRESSURE IN HPA 1024.4 1021.9 1016.8 1016.9 1015.5 1010.6 1007.7 1008.2 1015.5 1020.0 1022.5 1022.2 1024.4 DAY 9 8 31 2 17 1 10 22 21 22 26 2 MIN. QNH PRESSURE IN HPA 1012.1 1008.1 1002.4 1006.4 1006.1 1001.3 999.4 1000.2 1002.3 1009.4 1009.8 1006.5 999.4 DAY 27 23 12 9 24 23 28 7 1 1 24 29 MEAN QFF PRESSURE IN HPA 1021.2 1016.2 1009.7 1008.5 1004.7 996.5 992.4 994.2 1001.0 1010.1 1013.7 1015.8 1007.0 MAX. QFF PRESSURE IN HPA 1028.0 1023.1 1015.4 1013.2 1009.6 1001.8 996.0 997.8 1006.8 1015.2 1023.1 1023.5 1028.0 DAY 9 8 29 28 9 5 10 29 21 22 26 23 MIN. QFF PRESSURE IN HPA 1012.5 1006.9 1001.1 1002.2 998.2 991.1 989.2 989.4 993.6 1001.7 1007.0 1006.2 989.2 DAY 27 23 4 25 21 30 19 7 1 1 24 29 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 886.9 884.0 880.3 881.8 880.4 876.0 873.2 874.4 878.5 883.8 884.5 883.4 880.6 MAX. QFE PRESSURE IN HPA 892.2 888.2 885.0 885.6 884.5 879.6 877.2 877.9 883.8 889.9 889.4 890.8 892.2 DAY 9 8 29 2 18 1 10 22 21 15 26 2 MIN. QFE PRESSURE IN HPA 880.8 878.8 874.8 876.0 875.0 871.5 869.7 870.8 872.3 878.7 878.8 875.4 869.7 DAY 26 10 13 9 2 22 28 7 1 1 24 29 MEAN QNH PRESSURE IN HPA 1017.6 1014.3 1010.2 1012.0 1010.3 1005.4 1002.3 1003.7 1008.2 1014.1 1014.9 1013.7 1010.6 MAX. QNH PRESSURE IN HPA 1023.5 1019.1 1015.5 1016.2 1014.9 1009.4 1006.8 1007.5 1014.1 1021.0 1020.4 1022.0 1023.5 DAY 9 8 29 2 18 1 10 22 21 15 26 2 MIN. QNH PRESSURE IN HPA 1010.8 1008.6 1004.1 1005.4 1004.3 1000.4 998.4 999.6 1001.3 1008.4 1008.6 1004.7 998.4 DAY 26 10 13 9 2 22 28 7 1 1 24 29 MEAN QFF PRESSURE IN HPA 1018.1 1012.9 1008.1 1006.8 1003.4 995.2 991.2 992.6 998.7 1007.5 1011.2 1013.0 1004.9 MAX. QFF PRESSURE IN HPA 1025.8 1018.2 1014.3 1012.7 1008.3 1000.4 995.3 996.1 1005.0 1014.6 1018.5 1019.8 1025.8 DAY 11 8 29 28 5 5 10 30 21 15 26 2 MIN. QFF PRESSURE IN HPA 1009.3 1007.3 999.2 1000.8 995.9 989.8 988.2 988.4 991.5 1000.1 1005.2 1003.1 988.2 DAY 26 23 4 9 21 22 19 7 1 1 8 29 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 884.9 882.1 879.0 880.6 879.6 874.9 872.2 873.1 877.2 881.9 883.1 882.0 879.2 MAX. QFE PRESSURE IN HPA 889.5 885.9 884.0 883.5 883.6 878.4 876.9 876.4 882.1 886.0 887.8 889.0 889.5 DAY 11 8 31 1 17 1 10 22 21 18 26 2 MIN. QFE PRESSURE IN HPA 878.7 877.8 873.4 874.6 873.8 870.8 868.6 869.4 871.3 877.5 878.5 874.8 868.6 DAY 26 23 12 9 2 22 28 7 1 1 24 29 MEAN QNH PRESSURE IN HPA 1015.3 1012.2 1008.8 1010.5 1009.4 1004.2 1001.2 1002.1 1006.7 1012.0 1013.4 1012.1 1009.0 MAX. QNH PRESSURE IN HPA 1020.5 1016.5 1014.4 1013.8 1013.9 1008.1 1006.4 1005.9 1012.2 1016.6 1018.6 1020.0 1020.5 DAY 11 8 31 1 17 1 10 22 21 18 26 2 MIN. QNH PRESSURE IN HPA 1008.4 1007.4 1002.5 1003.9 1003.0 999.6 997.1 998.0 1000.2 1007.1 1008.2 1004.1 997.1 DAY 26 23 12 9 2 22 28 7 1 1 24 29 MEAN QFF PRESSURE IN HPA 1015.8 1011.1 1006.8 1005.7 1002.9 994.6 990.6 991.2 997.6 1005.6 1010.1 1011.5 1003.6 MAX. QFF PRESSURE IN HPA 1022.9 1015.2 1012.7 1009.8 1007.9 999.7 995.5 995.2 1002.9 1010.2 1017.5 1017.6 1022.9 DAY 11 8 29 28 15 2 10 29 20 22 26 2 MIN. QFF PRESSURE IN HPA 1008.0 1006.3 998.0 999.6 995.5 988.7 987.2 987.2 990.6 998.9 1004.6 1002.7 987.2 DAY 26 23 4 9 21 29 20 5 1 1 24 29 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 885.2 882.3 879.4 880.9 879.2 874.7 872.0 872.8 877.2 882.1 883.7 882.7 879.3 MAX. QFE PRESSURE IN HPA 889.9 886.1 884.7 883.9 882.9 879.4 876.2 875.6 882.4 885.9 887.9 889.8 889.9 DAY 11 7 29 18 17 4 10 30 20 17 26 2 MIN. QFE PRESSURE IN HPA 880.1 878.6 872.9 875.1 873.9 870.3 868.8 869.3 871.5 878.4 880.2 876.4 868.8 DAY 25 22 12 9 2 22 28 7 1 1 24 28 MEAN QNH PRESSURE IN HPA 1015.7 1012.5 1009.2 1010.9 1009.0 1004.0 1001.0 1001.8 1006.7 1012.2 1014.0 1012.9 1009.2 MAX. QNH PRESSURE IN HPA 1021.0 1016.7 1015.1 1014.3 1013.1 1009.2 1005.6 1005.0 1012.6 1016.5 1018.7 1020.9 1021.0 DAY 11 7 29 18 17 4 10 30 20 17 26 2 MIN. QNH PRESSURE IN HPA 1010.0 1008.3 1002.0 1004.4 1003.1 999.0 997.4 997.9 1000.4 1008.1 1010.1 1005.9 997.4 DAY 25 22 12 9 2 22 28 7 1 1 24 28 MEAN QFF PRESSURE IN HPA 1017.4 1012.4 1008.2 1007.3 1003.6 995.8 991.9 992.6 999.3 1007.5 1012.0 1013.2 1005.1 MAX. QFF PRESSURE IN HPA 1023.9 1017.1 1014.3 1011.2 1008.7 1003.8 996.2 996.5 1005.5 1012.5 1018.7 1019.5 1023.9 DAY 11 8 29 12 5 4 10 30 20 17 26 23 MIN. QFF PRESSURE IN HPA 1010.4 1007.3 1000.2 1001.3 996.6 990.4 988.8 988.6 992.8 1001.4 1007.0 1005.8 988.6 DAY 26 22 4 9 21 29 27 7 1 1 24 29 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 885.7 883.1 880.1 881.8 880.2 875.7 873.1 873.9 878.4 883.4 884.5 883.3 880.3 MAX. QFE PRESSURE IN HPA 890.3 887.2 885.2 885.6 883.8 879.8 876.0 876.7 883.8 887.7 889.0 890.4 890.4 DAY 9 8 29 1 16 4 9 29 20 22 26 2 MIN. QFE PRESSURE IN HPA 879.8 876.9 873.1 875.9 875.0 871.4 870.3 871.0 873.0 879.5 880.8 876.9 870.3 DAY 26 22 12 9 2 22 27 6 1 1 23 28 MEAN QNH PRESSURE IN HPA 1016.3 1013.4 1010.0 1011.9 1010.1 1005.1 1002.2 1003.1 1008.1 1013.7 1014.9 1013.6 1010.2 MAX. QNH PRESSURE IN HPA 1021.4 1017.9 1015.7 1016.2 1014.1 1009.7 1005.4 1006.2 1014.1 1018.5 1020.0 1021.5 1021.5 DAY 9 8 29 1 16 4 9 29 20 22 26 2 MIN. QNH PRESSURE IN HPA 1009.7 1006.4 1002.2 1005.3 1004.3 1000.3 999.0 999.8 1002.1 1009.3 1010.8 1006.4 999.0 DAY 26 22 12 9 2 22 27 6 1 1 23 28 MEAN QFF PRESSURE IN HPA 1018.3 1013.3 1008.7 1007.4 1003.7 995.5 991.4 992.6 999.8 1008.4 1012.6 1014.1 1005.5 MAX. QFF PRESSURE IN HPA 1025.0 1018.9 1014.5 1011.6 1008.8 1002.4 994.6 996.7 1005.5 1014.2 1020.5 1021.2 1025.0 DAY 9 8 14 1 5 4 25 30 20 22 26 21 MIN. QFF PRESSURE IN HPA 1009.9 1004.7 1001.1 1001.2 997.7 990.1 988.4 988.7 993.6 1001.8 1007.7 1006.7 988.4 DAY 26 22 4 9 24 29 17 7 1 1 23 28 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 885.8 883.5 880.3 882.0 880.4 876.1 873.6 874.3 878.8 883.5 884.6 883.4 880.5 MAX. QFE PRESSURE IN HPA 890.7 887.9 885.1 886.2 884.3 879.6 877.6 877.1 883.9 887.8 889.3 889.0 890.7 DAY 9 8 29 1 16 4 10 22 20 22 25 2 MIN. QFE PRESSURE IN HPA 879.3 875.3 873.4 876.1 874.9 871.8 870.5 871.1 874.1 879.9 880.4 876.6 870.5 DAY 26 22 12 9 2 22 27 6 1 1 23 28 MEAN QNH PRESSURE IN HPA 1016.4 1013.8 1010.2 1012.1 1010.4 1005.5 1002.7 1003.6 1008.5 1013.8 1015.1 1013.7 1010.5 MAX. QNH PRESSURE IN HPA 1021.9 1018.7 1015.6 1016.8 1014.7 1009.4 1007.2 1006.7 1014.3 1018.6 1020.3 1020.0 1021.9 DAY 9 8 29 1 16 4 10 22 20 22 25 2 MIN. QNH PRESSURE IN HPA 1009.1 1004.6 1002.5 1005.5 1004.2 1000.7 999.3 999.9 1003.3 1009.8 1010.3 1006.1 999.3 DAY 26 22 12 9 2 22 27 6 1 1 23 28 MEAN QFF PRESSURE IN HPA 1016.9 1012.3 1008.1 1006.9 1003.4 995.4 991.6 992.5 999.0 1007.3 1011.5 1013.1 1004.8 MAX. QFF PRESSURE IN HPA 1023.3 1018.3 1014.2 1011.2 1009.8 1001.2 995.6 995.9 1005.0 1012.6 1019.0 1019.5 1023.3 DAY 9 7 14 12 8 4 10 30 20 22 25 22 MIN. QFF PRESSURE IN HPA 1008.0 1000.6 999.2 1001.2 997.8 989.9 988.1 988.7 994.1 1001.5 1006.6 1004.9 988.1 DAY 26 22 3 24 21 22 17 7 1 4 23 7 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 M MEANS AND EXTREMES FOR THE YEAR 1956 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.3 8.0 9.3 13.9 20.1 26.7 30.9 29.8 24.3 18.0 11.6 6.4 16.9 MINIMUN AIR TEMPERATURE (C) -0.2 3.2 4.6 8.7 10.8 15.6 20.4 19.9 14.7 8.2 4.1 2.5 9.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 13 11 0 0 0 0 24 DAYS WITH MINIMUM TEMP. <=-4 4 0 0 1 0 0 0 0 0 0 0 2 7 DAYS WITH FREEZING MIN.<= 0 19 10 1 2 0 0 0 0 0 0 0 11 43 TEMPERATURE RECORDS LOWEST(C) -5.0 -3.0 -1.0 -7.0 7.0 12.0 17.0 15.0 6.0 4.0 1.0 -4.0 -7.0 DAY 18 2 25 1 1 1 11 12 24 30 18 12 MAXIMUM AIR TEMPERATURE (C) 11.6 15.2 15.4 19.8 29.5 37.5 40.4 39.6 35.0 29.5 21.1 12.4 25.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 20 30 31 31 30 17 0 0 159 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 16.0 21.0 21.0 27.0 36.0 41.0 43.0 42.0 39.0 34.0 24.0 23.0 43.0 DAY 24 6 7 26 31 25 1 2 1 6 4 1 DIF. BETWEEN (MAX.-MIN.) (C) 11.8 12.0 10.8 11.1 18.7 21.9 20.0 19.7 20.3 21.3 17.0 9.9 16.2 MEAN DAILY TEMP. (MDT) (C) 5.7 9.2 10.0 14.3 20.2 26.6 30.4 29.8 24.8 18.8 12.6 7.4 17.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 24.5 167.0 291.0 271.5 117.5 3.5 0.0 0.0 875.0 HEATING DEG. DAYS(BASE 18 0C) 380.0 256.0 247.0 115.5 18.0 0.0 0.0 0.0 0.0 21.0 162.0 328.0 1527.5 DEWPOINT (MEAN C) -1.2 1.1 1.9 6.4 6.0 6.2 8.6 6.4 3.7 0.2 -0.5 0.8 3.3 MIXING RATIO (G/KG) 4.02 4.86 5.17 7.06 6.88 6.93 8.24 7.07 5.75 4.47 4.25 4.73 5.79 VAPOUR PRESSURE (HPA) 5.67 6.83 7.24 9.88 9.62 9.65 11.41 9.85 8.06 6.31 6.02 6.67 8.10 SATURATION DEF. (HPA) 2.99 4.38 4.98 6.85 15.85 28.07 35.73 34.35 24.69 16.22 8.47 3.35 15.49 RELATIVE HUMIDITY (MEAN %) 70 65 64 64 44 30 28 25 28 33 46 70 47 RELATIVE HUMIDITY (MAX. %) 86 84 85 85 65 49 46 39 43 50 61 83 65 RELATIVE HUMIDITY (MIN. %) 48 43 44 44 25 15 16 14 15 17 29 52 30 RELATIVE HUMIDITY (MEAN% 03UTC) 79 78 79 80 64 48 44 38 42 47 57 78 61 RELATIVE HUMIDITY (MEAN% 09UTC) 53 51 53 52 30 18 18 17 17 20 32 58 35 RELATIVE HUMIDITY (MEAN% 15UTC) 64 55 56 55 30 19 19 18 21 25 39 64 39 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 66.1 73.9 104.5 97.5 0.6 0.0 4.0 0.0 1.1 0.0 0.6 63.9 412.2 DAYS WITH PRECIPITATION >=10 3 3 3 5 0 0 0 0 0 0 0 3 17 DAYS WITH PRECIPITATION >= 5 5 5 8 8 0 0 0 0 0 0 0 3 29 DAYS WITH PRECIPITATION >= 1 7 10 13 9 0 0 2 0 1 0 0 12 54 DAYS WITH PRECIPITATION 10 12 15 12 1 0 5 2 4 0 3 15 79 GREATEST DAILY PRECIPITATION 24.0 19.0 33.0 22.0 0.6 0.0 3.0 0.0 1.0 0.0 0.4 19.2 33.0 DAY 13 24 30 13 1 ** 22 ** 3 ** 8 9 DAY WITH THUNDER STORM 0 0 1 11 1 0 0 1 2 0 2 0 18 DAYS WITH SNOW OR SLEET 4 0 2 0 0 0 0 0 0 0 0 2 8 DAYS WITH DUST 0 1 0 1 0 0 0 0 0 0 1 0 3 WIND DIRECTION (PREVAILING) 135 135 135 135 135 135 135 90 135 135 135 135 135 PREVAILING WIND SPEED(KNOTS) 2.8 3.8 4.1 3.8 3.8 2.4 3.2 5.3 2.9 2.2 3.0 2.3 3.1 PREVAILING WIND PERCENT 39.3 40.5 33.1 33.8 30.2 32.1 33.5 29.8 40.0 37.1 47.1 44.4 35.8 CALMS PERCENT OF WIND 0.4 0.4 0.0 0.4 0.0 0.8 0.0 0.0 0.4 0.4 0.0 0.0 0.2 NO. OF WIND OBSERVATION 247 232 248 240 248 240 248 248 240 248 240 248 2927 VECTOR WIND DIRECTION (MEAN) 93 109 120 123 158 133 140 100 147 127 155 135 127 VECTOR WIND MAGNITUDE(KNOTS) 2.0 2.2 2.1 1.7 1.9 1.3 2.1 2.2 1.4 1.4 2.1 1.5 1.7 WIND STEADINESES (MEAN %) 76.9 68.7 61.8 44.7 43.2 52.0 58.3 42.3 34.1 56.0 58.3 48.4 48.6 WIND SPEED (MEAN KNOTS) 2.6 3.2 3.4 3.8 4.4 2.5 3.6 5.2 4.1 2.5 3.6 3.1 3.5 FASTEST WIND DIRECTION 130 130 180 230 230 230 50 90 230 230 230 230 230 FASTEST WIND SPEED (KNOTS) 7 18 24 25 30 10 24 26 24 24 24 24 30 DAY 28 29 24 26 3 1 2 8 1 17 8 11 DAYS WITH SKY CLEAR (0-2)/8 14 10 10 6 28 30 27 23 28 29 14 7 226 DAYS WITH P.CLOUDY (3-6)/8 13 10 11 11 3 0 4 8 2 2 11 11 86 DAYS WITH CLOUDY (7-8)/8 4 9 10 13 0 0 0 0 0 0 5 13 54 DAYS WITH VISIBILITY =< 2 KM 0 1 0 0 0 0 0 0 0 0 0 0 1 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 882.7 882.5 878.6 880.7 879.4 876.4 873.4 876.8 879.3 884.8 886.9 885.9 880.6 MAX. QFE PRESSURE IN HPA 889.8 889.5 886.5 888.4 884.2 881.3 877.8 887.7 885.4 889.8 893.2 892.0 893.2 DAY-HOUR 26- 3 5- 6 6- 6 2- 6 5- 6 6- 6 25- 6 8-15 30- 6 26- 6 20- 6 13- 6 MIN. QFE PRESSURE IN HPA 873.1 870.4 869.5 870.5 872.5 870.6 868.8 871.0 873.4 879.6 877.9 876.3 868.8 DAY-HOUR 15- 3 29- 3 29-12 29-15 27- 9 28-12 15-15 15-12 11-12 28-12 8-12 21-12 MEAN QNH PRESSURE IN HPA 1013.0 1012.6 1008.3 1010.6 1009.3 1005.9 1002.5 1006.3 1009.2 1015.2 1017.6 1016.5 1010.6 MAX. QNH PRESSURE IN HPA 1020.9 1020.5 1017.2 1019.3 1014.6 1011.3 1007.4 1018.5 1015.9 1020.9 1024.7 1023.3 1024.7 DAY-HOUR 26- 3 5- 6 6- 6 2- 6 5- 6 6- 6 25- 6 8-15 30- 6 26- 6 20- 6 13- 6 MIN. QNH PRESSURE IN HPA 1002.2 999.2 998.1 999.3 1001.5 999.4 997.4 999.8 1002.5 1009.4 1007.5 1005.8 997.4 DAY-HOUR 15- 3 29- 3 29-12 29-15 27- 9 28-12 15-15 15-12 11-12 28-12 8-12 21-12 MEAN QFF PRESSURE IN HPA 1014.3 1012.2 1007.0 1007.2 1002.9 996.6 991.3 995.7 1001.0 1010.1 1015.5 1016.9 1005.9 MAX. QFF PRESSURE IN HPA 1025.2 1023.2 1017.4 1023.5 1010.0 1003.3 996.3 1009.0 1009.2 1017.6 1023.4 1027.8 1027.8 DAY-HOUR 18- 6 2- 6 6- 6 1-18 5- 6 3- 3 25- 3 8-15 30- 6 26- 6 20- 6 13- 6 MIN. QFF PRESSURE IN HPA 1003.4 996.3 994.7 994.7 993.3 989.2 985.5 988.5 992.7 1003.1 1004.5 1004.4 985.5 DAY-HOUR 15- 9 29- 3 29- 9 29-12 27- 9 28-12 16-12 15-12 11-12 10-12 8-12 21-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 883.1 882.9 878.8 880.8 880.0 877.0 874.1 877.2 880.0 885.3 887.3 886.3 881.0 MAX. QFE PRESSURE IN HPA 889.7 888.4 885.4 888.0 883.2 879.9 876.8 882.5 883.8 889.0 891.7 891.0 891.7 DAY 26 5 6 2 6 14 25 31 30 26 20 24 MIN. QFE PRESSURE IN HPA 874.8 872.5 871.5 871.6 875.3 872.4 870.4 872.4 875.8 881.7 879.5 879.8 870.4 DAY 15 29 29 30 28 28 16 15 4 29 8 10 MEAN QNH PRESSURE IN HPA 1013.3 1013.1 1008.5 1010.8 1009.9 1006.5 1003.2 1006.7 1009.9 1015.8 1018.0 1016.9 1011.1 MAX. QNH PRESSURE IN HPA 1020.7 1019.3 1015.9 1018.8 1013.5 1009.8 1006.3 1012.7 1014.1 1020.0 1023.0 1022.2 1023.0 DAY 26 5 6 2 6 14 25 31 30 26 20 24 MIN. QNH PRESSURE IN HPA 1004.1 1001.5 1000.4 1000.5 1004.6 1001.4 999.2 1001.4 1005.2 1011.8 1009.3 1009.7 999.2 DAY 15 29 29 30 28 28 16 15 4 29 8 10 MEAN QFF PRESSURE IN HPA 1014.0 1012.1 1006.9 1007.0 1003.3 996.8 991.6 995.6 1001.0 1009.9 1015.3 1016.8 1005.9 MAX. QFF PRESSURE IN HPA 1022.4 1020.0 1015.8 1021.0 1008.1 1001.7 994.5 1001.6 1006.2 1015.2 1020.1 1024.3 1024.3 DAY 20 2 6 2 6 3 25 31 30 26 20 13 MIN. QFF PRESSURE IN HPA 1005.2 998.5 996.9 994.9 996.9 990.7 987.6 989.9 995.4 1005.7 1005.1 1009.0 987.6 DAY 15 29 29 30 28 28 16 4 4 17 8 10 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 883.1 883.0 879.0 880.9 880.3 877.3 874.4 877.6 880.3 885.5 887.6 886.4 881.3 MAX. QFE PRESSURE IN HPA 889.8 888.5 885.8 888.1 883.8 880.4 877.4 882.8 884.0 889.3 892.4 891.1 892.4 DAY 26 2 6 2 5 14 25 31 30 26 20 24 MIN. QFE PRESSURE IN HPA 873.1 870.4 870.3 873.5 875.3 872.6 869.7 872.5 875.9 882.1 879.1 879.5 869.7 DAY 15 29 29 30 28 28 16 15 4 29 8 10 MEAN QNH PRESSURE IN HPA 1013.3 1013.2 1008.7 1010.9 1010.2 1006.8 1003.7 1007.2 1010.2 1016.1 1018.4 1017.1 1011.3 MAX. QNH PRESSURE IN HPA 1020.9 1019.4 1016.4 1019.0 1014.1 1010.3 1007.0 1013.0 1014.4 1020.3 1023.8 1022.3 1023.8 DAY 26 2 6 2 5 14 25 31 30 26 20 24 MIN. QNH PRESSURE IN HPA 1002.2 999.2 999.0 1002.6 1004.6 1001.6 998.4 1001.5 1005.3 1012.2 1008.9 1009.3 998.4 DAY 15 29 29 30 28 28 16 15 4 29 8 10 MEAN QFF PRESSURE IN HPA 1015.2 1013.3 1008.0 1008.1 1004.9 998.6 993.5 997.6 1003.1 1012.2 1017.2 1018.0 1007.5 MAX. QFF PRESSURE IN HPA 1024.6 1022.9 1016.9 1021.9 1009.9 1003.3 996.3 1003.4 1008.0 1017.4 1023.0 1026.0 1026.0 DAY 19 2 6 2 5 3 25 31 30 26 20 13 MIN. QFF PRESSURE IN HPA 1003.7 996.3 995.9 998.2 998.3 992.6 988.6 992.1 996.7 1008.2 1005.5 1008.6 988.6 DAY 15 29 29 30 28 28 16 15 4 17 8 10 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 884.2 883.8 879.6 881.5 880.4 877.2 874.4 877.9 880.5 886.1 888.1 887.1 881.7 MAX. QFE PRESSURE IN HPA 889.5 889.5 886.5 888.4 884.2 881.3 877.8 882.3 885.4 889.8 893.2 892.0 893.2 DAY 26 5 6 2 5 6 25 30 30 26 20 13 MIN. QFE PRESSURE IN HPA 874.4 871.6 870.3 874.6 874.9 872.1 870.2 872.3 876.5 882.8 879.2 879.3 870.2 DAY 15 29 29 29 28 28 16 15 11 29 8 10 MEAN QNH PRESSURE IN HPA 1014.6 1014.1 1009.4 1011.6 1010.3 1006.8 1003.6 1007.5 1010.5 1016.7 1018.9 1017.8 1011.8 MAX. QNH PRESSURE IN HPA 1020.5 1020.5 1017.2 1019.3 1014.6 1011.3 1007.4 1012.5 1015.9 1020.9 1024.7 1023.3 1024.7 DAY 26 5 6 2 5 6 25 30 30 26 20 13 MIN. QNH PRESSURE IN HPA 1003.6 1000.5 999.0 1003.9 1004.2 1001.1 998.9 1001.3 1006.0 1013.0 1009.0 1009.1 998.9 DAY 15 29 29 29 28 28 16 15 11 29 8 10 MEAN QFF PRESSURE IN HPA 1016.9 1014.4 1008.2 1008.4 1004.1 997.7 992.7 997.1 1002.8 1012.3 1017.7 1018.8 1007.6 MAX. QFF PRESSURE IN HPA 1025.2 1023.2 1017.4 1021.7 1010.0 1002.6 995.8 1001.8 1009.2 1017.6 1023.4 1027.8 1027.8 DAY 18 2 6 2 5 3 25 31 30 26 20 13 MIN. QFF PRESSURE IN HPA 1005.1 997.7 995.5 998.3 997.0 991.6 987.9 991.3 997.4 1008.2 1005.4 1008.1 987.9 DAY 15 29 29 29 28 28 16 3 11 17 8 10 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 882.8 882.9 878.9 881.2 879.4 876.5 873.5 876.8 879.3 884.7 886.9 886.2 880.8 MAX. QFE PRESSURE IN HPA 889.6 888.1 885.4 887.3 883.5 880.9 876.5 881.0 883.5 888.5 892.3 890.2 892.3 DAY 26 5 14 2 5 6 25 31 30 26 20 13 MIN. QFE PRESSURE IN HPA 873.1 871.6 869.8 873.4 872.5 871.6 869.9 871.6 874.9 881.5 878.9 878.5 869.8 DAY 15 29 29 29 27 28 16 15 11 28 8 21 MEAN QNH PRESSURE IN HPA 1013.1 1013.2 1008.7 1011.2 1009.3 1005.9 1002.6 1006.3 1009.1 1015.1 1017.6 1016.8 1010.7 MAX. QNH PRESSURE IN HPA 1020.6 1019.0 1015.9 1018.1 1013.8 1010.9 1006.0 1011.0 1013.8 1019.4 1023.6 1021.3 1023.6 DAY 26 5 14 2 5 6 25 31 30 26 20 13 MIN. QNH PRESSURE IN HPA 1002.2 1000.5 998.5 1002.5 1001.5 1000.5 998.6 1000.5 1004.2 1011.6 1008.7 1008.2 998.5 DAY 15 29 29 29 27 28 16 15 11 28 8 21 MEAN QFF PRESSURE IN HPA 1013.8 1012.2 1006.8 1007.2 1002.3 996.1 990.7 995.0 1000.1 1008.9 1014.6 1016.6 1005.3 MAX. QFF PRESSURE IN HPA 1022.2 1019.8 1014.2 1020.2 1008.2 1001.6 993.9 1000.8 1006.0 1014.0 1020.6 1024.0 1024.0 DAY 18 2 6 1 5 2 25 31 30 26 20 13 MIN. QFF PRESSURE IN HPA 1003.4 997.0 994.7 996.2 993.3 990.0 986.4 989.3 994.1 1005.3 1005.0 1006.1 986.4 DAY 15 29 29 29 27 28 16 15 11 17 8 21 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 880.9 880.8 877.3 879.8 878.4 875.5 872.3 875.4 877.9 883.3 885.3 884.4 879.3 MAX. QFE PRESSURE IN HPA 887.4 885.7 882.5 886.5 882.5 878.9 875.3 879.7 882.1 887.9 890.4 888.7 890.4 DAY 26 2 6 1 5 2 25 31 30 26 20 13 MIN. QFE PRESSURE IN HPA 873.7 872.4 869.5 871.5 873.6 870.6 868.9 871.0 873.4 879.6 877.9 876.3 868.9 DAY 15 29 29 29 25 28 16 15 11 28 8 21 MEAN QNH PRESSURE IN HPA 1010.9 1010.8 1006.9 1009.7 1008.1 1004.9 1001.3 1004.8 1007.5 1013.5 1015.8 1014.8 1009.1 MAX. QNH PRESSURE IN HPA 1018.2 1016.3 1012.7 1017.2 1012.7 1008.7 1004.6 1009.6 1012.2 1018.7 1021.5 1019.6 1021.5 DAY 26 2 6 1 5 2 25 31 30 26 20 13 MIN. QNH PRESSURE IN HPA 1002.9 1001.4 998.1 1000.4 1002.7 999.4 997.5 999.8 1002.5 1009.4 1007.5 1005.8 997.5 DAY 15 29 29 29 25 28 16 15 11 28 8 21 MEAN QFF PRESSURE IN HPA 1011.5 1009.6 1005.3 1005.8 1001.3 995.1 989.6 993.6 998.6 1007.5 1013.0 1014.6 1003.8 MAX. QFF PRESSURE IN HPA 1019.5 1016.8 1012.2 1020.0 1007.5 1000.7 992.8 998.6 1004.3 1014.3 1018.8 1021.8 1021.8 DAY 20 2 4 1 5 2 25 31 30 26 20 13 MIN. QFF PRESSURE IN HPA 1003.9 998.7 995.4 994.7 994.7 989.2 985.5 988.5 992.7 1003.1 1004.5 1004.4 985.5 DAY 13 29 29 29 25 28 16 15 11 10 8 21 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 882.0 881.5 877.7 879.8 878.2 875.1 872.1 875.8 878.0 883.6 885.9 885.1 879.6 MAX. QFE PRESSURE IN HPA 888.0 887.8 883.8 886.4 881.9 878.8 874.4 887.7 882.0 887.7 890.3 889.7 890.3 DAY 20 4 5 1 5 6 30 8 30 26 20 23 MIN. QFE PRESSURE IN HPA 874.8 874.6 870.9 870.5 872.8 870.8 868.8 871.0 874.1 879.9 878.6 876.6 868.8 DAY 13 7 29 29 27 27 15 15 11 28 8 21 MEAN QNH PRESSURE IN HPA 1012.1 1011.6 1007.3 1009.7 1007.9 1004.4 1001.1 1005.2 1007.7 1014.0 1016.5 1015.6 1009.4 MAX. QNH PRESSURE IN HPA 1018.8 1018.6 1014.1 1017.0 1012.0 1008.6 1003.6 1018.5 1012.1 1018.5 1021.4 1020.7 1021.4 DAY 20 4 5 1 5 6 30 8 30 26 20 23 MIN. QNH PRESSURE IN HPA 1004.1 1003.9 999.7 999.3 1001.8 999.6 997.4 999.8 1003.3 1009.8 1008.3 1006.1 997.4 DAY 13 7 29 29 27 27 15 15 11 28 8 21 MEAN QFF PRESSURE IN HPA 1014.0 1011.5 1006.6 1006.7 1002.4 996.0 990.8 995.5 1000.6 1010.0 1015.2 1016.5 1005.5 MAX. QFF PRESSURE IN HPA 1022.7 1019.4 1014.3 1021.2 1007.7 1000.7 993.2 1009.0 1005.8 1015.5 1020.5 1023.5 1023.5 DAY 20 1 5 1 5 2 17 8 30 26 20 24 MIN. QFF PRESSURE IN HPA 1005.8 1002.2 997.2 994.9 995.4 991.0 987.7 989.3 994.7 1005.9 1005.5 1006.1 987.7 DAY 13 7 29 29 25 20 15 4 3 10 8 21 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 882.8 882.3 878.6 880.8 879.2 876.1 873.0 876.5 879.2 884.7 886.8 885.8 880.5 MAX. QFE PRESSURE IN HPA 888.7 888.5 884.9 887.8 882.6 879.3 874.9 881.8 883.1 888.5 891.1 890.7 891.1 DAY 26 4 5 1 5 2 24 30 30 26 20 23 MIN. QFE PRESSURE IN HPA 876.6 874.3 871.6 873.8 874.2 872.0 869.2 872.4 875.0 881.1 879.3 880.0 869.2 DAY 13 28 29 29 27 27 15 15 11 28 8 9 MEAN QNH PRESSURE IN HPA 1013.0 1012.5 1008.3 1010.8 1009.0 1005.6 1002.1 1005.9 1009.0 1015.1 1017.4 1016.4 1010.4 MAX. QNH PRESSURE IN HPA 1019.6 1019.4 1015.4 1018.6 1012.8 1009.1 1004.2 1011.9 1013.4 1019.4 1022.3 1021.9 1022.3 DAY 26 4 5 1 5 2 24 30 30 26 20 23 MIN. QNH PRESSURE IN HPA 1006.1 1003.5 1000.5 1003.0 1003.4 1000.9 997.8 1001.4 1004.3 1011.1 1009.1 1009.9 997.8 DAY 13 28 29 29 27 27 15 15 11 28 8 9 MEAN QFF PRESSURE IN HPA 1015.3 1012.7 1007.2 1007.5 1002.8 996.4 991.2 995.6 1001.3 1010.7 1016.1 1017.4 1006.2 MAX. QFF PRESSURE IN HPA 1024.0 1021.5 1015.5 1023.5 1007.6 1001.9 993.2 1001.8 1007.1 1016.3 1021.1 1025.2 1025.2 DAY 18 12 5 1 5 2 17 31 30 26 20 13 MIN. QFF PRESSURE IN HPA 1008.2 1002.5 997.6 998.5 995.8 991.3 986.6 989.5 995.5 1005.6 1004.9 1009.5 986.6 DAY 13 28 29 29 25 27 15 3 3 9 8 10 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 883.2 882.6 878.8 880.7 879.7 876.6 873.6 877.0 879.7 885.1 887.1 886.0 880.9 MAX. QFE PRESSURE IN HPA 889.1 888.9 885.1 887.9 883.0 879.5 876.2 882.2 883.8 888.7 892.0 890.9 892.0 DAY 26 4 5 1 5 2 24 30 30 25 20 23 MIN. QFE PRESSURE IN HPA 876.9 873.0 872.5 872.7 874.9 872.2 869.7 872.5 875.6 881.5 880.3 879.8 869.7 DAY 30 28 29 29 27 27 15 14 3 28 7 9 MEAN QNH PRESSURE IN HPA 1013.5 1012.9 1008.6 1010.7 1009.6 1006.1 1002.8 1006.6 1009.6 1015.6 1017.9 1016.7 1010.9 MAX. QNH PRESSURE IN HPA 1020.1 1019.8 1015.6 1018.7 1013.2 1009.3 1005.6 1012.4 1014.1 1019.6 1023.3 1022.1 1023.3 DAY 26 4 5 1 5 2 24 30 30 25 20 23 MIN. QNH PRESSURE IN HPA 1006.4 1002.1 1001.5 1001.7 1004.2 1001.2 998.4 1001.5 1005.0 1011.6 1010.2 1009.7 998.4 DAY 30 28 29 29 27 27 15 14 3 28 7 9 MEAN QFF PRESSURE IN HPA 1014.2 1011.8 1006.9 1006.6 1002.6 996.2 990.9 995.3 1000.6 1009.5 1015.0 1016.5 1005.5 MAX. QFF PRESSURE IN HPA 1022.7 1019.7 1015.1 1021.1 1007.3 1001.4 993.9 1001.8 1006.6 1014.2 1020.6 1024.2 1024.2 DAY 19 12 5 1 5 2 24 30 30 25 20 13 MIN. QFF PRESSURE IN HPA 1005.9 999.8 998.1 996.0 996.3 990.4 986.0 989.5 994.6 1005.4 1006.3 1008.4 986.0 DAY 30 28 28 29 26 27 15 3 3 9 7 7 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 M MEANS AND EXTREMES FOR THE YEAR 1957 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.7 4.4 10.8 13.4 18.0 25.2 30.0 29.0 25.0 18.8 10.7 6.4 16.2 MINIMUN AIR TEMPERATURE (C) -0.7 -0.5 5.7 8.5 12.0 16.2 20.4 19.3 14.6 10.8 6.2 1.4 9.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 14 9 2 0 0 0 25 DAYS WITH MINIMUM TEMP. <=-4 7 7 0 0 0 0 0 0 0 0 0 3 17 DAYS WITH FREEZING MIN.<= 0 21 13 0 0 0 0 0 0 0 0 1 10 45 TEMPERATURE RECORDS LOWEST(C) -6.0 -11.0 2.0 3.0 5.0 11.0 16.0 15.0 11.0 5.0 -1.0 -6.0 -11.0 DAY 25 6 1 5 1 7 3 29 26 14 25 30 MAXIMUM AIR TEMPERATURE (C) 8.3 11.3 17.1 19.6 24.5 34.9 39.5 39.3 36.0 28.1 17.7 14.3 24.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 5 26 31 31 30 10 0 0 133 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 12.0 20.0 22.0 29.0 34.0 40.0 43.0 42.0 39.0 35.0 27.0 19.0 43.0 DAY 2 19 3 16 31 22 27 2 1 5 2 3 DIF. BETWEEN (MAX.-MIN.) (C) 9.0 11.8 11.4 11.1 12.5 18.7 19.1 20.0 21.4 17.3 11.5 12.9 14.7 MEAN DAILY TEMP. (MDT) (C) 3.8 5.4 11.4 14.1 18.3 25.5 30.0 29.3 25.3 19.5 11.9 7.8 16.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 9.5 140.5 278.0 257.5 129.5 10.0 0.0 0.0 825.0 HEATING DEG. DAYS(BASE 18 0C) 440.5 353.0 204.0 125.5 37.0 0.0 0.0 0.0 0.0 9.0 182.5 315.0 1666.5 DEWPOINT (MEAN C) -1.9 -1.5 3.3 8.2 11.1 15.4 10.2 8.4 6.8 7.5 5.4 0.5 6.1 MIXING RATIO (G/KG) 3.86 4.04 5.64 7.88 9.63 12.96 9.16 8.01 7.15 7.67 6.50 4.69 7.27 VAPOUR PRESSURE (HPA) 5.43 5.70 7.92 11.02 13.43 17.89 12.69 11.15 10.01 10.77 9.15 6.62 10.15 SATURATION DEF. (HPA) 2.24 3.40 5.55 5.10 8.34 16.64 32.36 31.33 24.03 12.18 4.24 3.42 12.40 RELATIVE HUMIDITY (MEAN %) 73 68 63 74 67 58 31 29 34 52 72 68 57 RELATIVE HUMIDITY (MAX. %) 84 82 80 88 86 75 47 42 49 70 86 83 73 RELATIVE HUMIDITY (MIN. %) 54 53 45 56 48 41 19 17 19 33 53 49 41 RELATIVE HUMIDITY (MEAN% 03UTC) 77 77 78 87 84 74 46 42 48 67 81 80 70 RELATIVE HUMIDITY (MEAN% 09UTC) 63 60 51 62 55 46 22 19 22 40 61 55 46 RELATIVE HUMIDITY (MEAN% 15UTC) 73 62 53 68 57 48 23 23 25 42 65 64 50 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 78.0 125.2 112.1 168.8 98.4 1.0 0.0 0.5 0.0 19.1 106.1 42.5 751.7 DAYS WITH PRECIPITATION >=10 3 5 4 8 5 0 0 0 0 1 4 2 32 DAYS WITH PRECIPITATION >= 5 5 5 9 12 8 0 0 0 0 2 6 3 50 DAYS WITH PRECIPITATION >= 1 12 8 16 15 9 1 0 0 0 4 12 5 82 DAYS WITH PRECIPITATION 16 12 20 15 13 4 1 2 1 6 16 7 113 GREATEST DAILY PRECIPITATION 16.0 39.0 27.0 31.0 29.0 1.0 0.0 0.5 0.0 11.0 27.0 21.0 39.0 DAY 9 27 31 28 7 6 ** 20 ** 17 18 5 DAY WITH THUNDER STORM 1 2 8 11 10 5 0 0 0 5 7 2 51 DAYS WITH SNOW OR SLEET 9 6 1 3 0 0 0 0 0 0 1 1 21 DAYS WITH DUST 0 0 0 1 0 0 0 0 0 0 1 0 2 WIND DIRECTION (PREVAILING) 135 135 135 135 135 135 135 135 135 135 135 135 135 PREVAILING WIND SPEED(KNOTS) 2.6 2.7 4.0 3.1 3.7 2.6 2.4 2.6 2.3 2.5 2.7 2.8 2.9 PREVAILING WIND PERCENT 37.9 37.9 52.0 47.1 40.7 44.6 42.7 41.9 45.4 43.1 35.4 39.1 42.4 CALMS PERCENT OF WIND 0.0 0.0 0.0 0.0 0.0 10.0 0.8 0.4 0.0 2.8 17.1 12.1 3.6 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 113 110 153 125 149 132 135 125 134 134 113 118 130 VECTOR WIND MAGNITUDE(KNOTS) 1.4 1.8 3.0 2.2 2.3 1.4 1.5 1.8 2.0 1.4 1.5 1.8 1.8 WIND STEADINESES (MEAN %) 43.7 64.3 62.5 64.7 53.5 46.7 55.6 54.5 71.4 48.3 65.2 78.3 58.1 WIND SPEED (MEAN KNOTS) 3.2 2.8 4.8 3.4 4.3 3.0 2.7 3.3 2.8 2.9 2.3 2.3 3.1 FASTEST WIND DIRECTION 230 180 310 360 180 310 230 230 90 180 230 130 310 FASTEST WIND SPEED (KNOTS) 24 18 28 24 16 24 9 24 24 25 17 11 28 DAY 7 25 14 21 6 11 3 19 1 10 5 20 DAYS WITH SKY CLEAR (0-2)/8 9 15 5 10 11 24 29 26 28 19 7 14 197 DAYS WITH P.CLOUDY (3-6)/8 6 5 12 7 11 5 2 5 2 8 11 13 87 DAYS WITH CLOUDY (7-8)/8 16 8 14 13 9 1 0 0 0 4 12 4 81 DAYS WITH VISIBILITY =< 2 KM 2 0 0 0 0 0 0 0 0 0 0 0 2 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 882.2 884.9 881.9 881.2 881.2 877.6 874.6 877.2 881.6 884.9 885.0 885.6 881.5 MAX. QFE PRESSURE IN HPA 891.6 892.8 889.1 886.4 887.2 882.3 880.6 881.7 887.0 890.5 890.0 891.2 892.8 DAY-HOUR 14- 6 8- 6 2- 6 17- 6 11- 6 17- 6 5- 3 4- 6 11-21 30- 6 24- 6 30- 6 MIN. QFE PRESSURE IN HPA 867.7 875.0 871.1 875.7 876.9 872.7 870.3 870.6 877.2 879.8 876.0 878.0 867.7 DAY-HOUR 19-12 26-15 14-12 7-15 21-15 29-15 14-12 8-15 1-12 11- 9 17-21 6-18 MEAN QNH PRESSURE IN HPA 1012.4 1015.4 1012.0 1011.2 1011.2 1007.2 1003.9 1006.7 1011.7 1015.3 1015.4 1016.1 1011.5 MAX. QNH PRESSURE IN HPA 1022.9 1024.2 1020.1 1017.0 1017.9 1012.5 1010.6 1011.8 1017.7 1021.6 1021.1 1022.4 1024.2 DAY-HOUR 14- 6 8- 6 2- 6 17- 6 11- 6 17- 6 5- 3 4- 6 11-21 30- 6 24- 6 30- 6 MIN. QNH PRESSURE IN HPA 996.1 1004.3 999.9 1005.1 1006.4 1001.7 999.0 999.4 1006.8 1009.7 1005.4 1007.7 996.1 DAY-HOUR 19-12 26-15 14-12 7-15 21-15 29-15 14-12 8-15 1-12 11- 9 17-21 6-18 MEAN QFF PRESSURE IN HPA 1014.5 1016.8 1010.0 1007.9 1005.7 998.1 993.0 996.4 1003.1 1009.6 1013.5 1016.5 1007.1 MAX. QFF PRESSURE IN HPA 1027.4 1031.1 1019.8 1014.1 1012.4 1004.6 1001.5 1002.1 1010.1 1016.9 1021.7 1027.1 1031.1 DAY-HOUR 14- 6 7- 6 2- 3 10- 6 11- 3 17- 6 5- 3 31- 3 30- 3 30- 3 24- 6 30- 6 MIN. QFF PRESSURE IN HPA 997.2 1004.6 998.2 1002.7 998.3 990.6 987.6 988.5 995.3 1002.5 1002.4 1007.0 987.6 DAY-HOUR 19-12 26-15 31- 9 19-15 31-12 30-12 21-12 8-12 1-12 3- 9 17-21 6-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 882.5 885.0 882.1 881.4 881.5 878.0 875.1 877.7 882.1 885.3 885.1 885.9 881.8 MAX. QFE PRESSURE IN HPA 890.8 892.1 886.6 885.6 886.5 881.8 880.0 881.0 885.0 889.7 888.6 890.6 892.1 DAY 14 8 1 17 11 18 5 4 22 30 14 30 MIN. QFE PRESSURE IN HPA 871.5 876.0 874.0 877.7 878.0 874.0 871.6 872.3 879.3 881.7 876.2 878.2 871.5 DAY 19 27 7 7 22 5 11 9 15 11 18 7 MEAN QNH PRESSURE IN HPA 1012.7 1015.5 1012.2 1011.4 1011.6 1007.7 1004.4 1007.3 1012.2 1015.8 1015.6 1016.5 1011.9 MAX. QNH PRESSURE IN HPA 1022.0 1023.4 1017.3 1016.2 1017.2 1011.9 1009.9 1011.0 1015.5 1020.7 1019.5 1021.7 1023.4 DAY 14 8 1 17 11 18 5 4 22 30 14 30 MIN. QNH PRESSURE IN HPA 1000.4 1005.4 1003.2 1007.3 1007.7 1003.2 1000.5 1001.3 1009.1 1011.8 1005.6 1007.9 1000.4 DAY 19 27 7 7 22 5 11 9 15 11 18 7 MEAN QFF PRESSURE IN HPA 1014.4 1016.5 1009.8 1007.8 1006.0 998.4 993.2 996.4 1003.0 1009.6 1013.2 1016.2 1007.0 MAX. QFF PRESSURE IN HPA 1024.9 1028.3 1017.4 1011.5 1011.6 1002.8 1000.5 999.9 1008.1 1015.3 1019.6 1024.2 1028.3 DAY 14 8 9 10 11 18 5 31 30 30 25 30 MIN. QFF PRESSURE IN HPA 1000.8 1006.7 998.8 1003.2 1000.0 992.5 988.7 990.1 998.2 1003.8 1002.8 1007.9 988.7 DAY 19 27 7 7 22 30 20 9 2 3 18 7 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 882.6 885.3 882.3 881.5 881.7 878.1 875.5 878.1 882.4 885.6 885.3 886.0 882.0 MAX. QFE PRESSURE IN HPA 890.7 891.9 889.0 886.0 886.7 881.7 880.6 881.6 885.5 890.2 889.1 890.8 891.9 DAY 14 8 2 17 11 17 5 4 30 30 24 30 MIN. QFE PRESSURE IN HPA 869.0 876.3 875.0 877.0 878.4 873.9 872.0 873.0 879.5 881.8 877.1 878.2 869.0 DAY 19 27 14 7 22 5 11 9 2 11 18 7 MEAN QNH PRESSURE IN HPA 1012.8 1015.8 1012.4 1011.6 1011.8 1007.8 1004.8 1007.8 1012.6 1016.2 1015.9 1016.6 1012.2 MAX. QNH PRESSURE IN HPA 1021.9 1023.2 1020.0 1016.6 1017.4 1011.8 1010.6 1011.7 1016.0 1021.3 1020.1 1022.0 1023.2 DAY 14 8 2 17 11 17 5 4 30 30 24 30 MIN. QNH PRESSURE IN HPA 997.6 1005.8 1004.3 1006.5 1008.1 1003.1 1000.9 1002.1 1009.3 1011.9 1006.7 1007.9 997.6 DAY 19 27 14 7 22 5 11 9 2 11 18 7 MEAN QFF PRESSURE IN HPA 1015.5 1017.9 1011.0 1008.9 1007.0 999.8 994.9 998.5 1005.3 1011.3 1014.4 1017.7 1008.5 MAX. QFF PRESSURE IN HPA 1026.6 1029.8 1019.8 1012.7 1012.4 1003.9 1001.5 1002.1 1010.1 1016.9 1021.3 1025.8 1029.8 DAY 14 8 2 10 11 17 5 31 30 30 25 30 MIN. QFF PRESSURE IN HPA 998.7 1007.0 1001.4 1003.8 1001.7 994.3 990.5 993.2 1000.0 1005.6 1004.4 1008.5 990.5 DAY 19 27 31 7 24 30 20 9 2 3 18 7 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 883.3 885.9 882.9 882.0 882.1 878.2 875.6 878.3 882.7 886.1 885.9 886.5 882.5 MAX. QFE PRESSURE IN HPA 891.6 892.8 889.1 886.4 887.2 882.3 880.6 881.7 885.8 890.5 890.0 891.2 892.8 DAY 14 8 2 17 11 17 5 4 30 30 24 30 MIN. QFE PRESSURE IN HPA 869.2 878.1 873.6 877.9 877.9 874.0 872.1 873.6 879.6 881.5 877.2 880.4 869.2 DAY 19 27 14 3 13 5 14 8 1 11 18 7 MEAN QNH PRESSURE IN HPA 1013.6 1016.5 1013.1 1012.2 1012.2 1007.9 1005.0 1008.0 1013.0 1016.7 1016.5 1017.2 1012.6 MAX. QNH PRESSURE IN HPA 1022.9 1024.2 1020.1 1017.0 1017.9 1012.5 1010.6 1011.8 1016.4 1021.6 1021.1 1022.4 1024.2 DAY 14 8 2 17 11 17 5 4 30 30 24 30 MIN. QNH PRESSURE IN HPA 997.8 1007.8 1002.7 1007.5 1007.5 1003.2 1001.1 1002.7 1009.4 1011.6 1006.8 1010.3 997.8 DAY 19 27 14 3 13 5 14 8 1 11 18 7 MEAN QFF PRESSURE IN HPA 1016.3 1018.6 1011.5 1009.1 1006.8 999.1 994.2 998.0 1004.9 1011.3 1015.0 1018.2 1008.6 MAX. QFF PRESSURE IN HPA 1027.4 1031.1 1019.5 1014.1 1012.2 1004.6 1001.2 1001.6 1009.7 1016.9 1021.7 1027.1 1031.1 DAY 14 7 2 10 11 17 5 31 30 29 24 30 MIN. QFF PRESSURE IN HPA 998.0 1008.4 1001.6 1005.6 1001.4 993.6 990.6 992.2 999.2 1005.4 1005.3 1010.8 990.6 DAY 19 26 31 3 13 29 21 8 1 11 18 7 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 882.5 885.2 882.2 881.4 881.3 877.6 874.7 877.1 881.5 884.6 885.3 885.9 881.6 MAX. QFE PRESSURE IN HPA 891.0 892.0 888.4 885.5 886.0 881.2 879.4 880.5 884.7 889.1 888.9 890.5 892.0 DAY 14 7 2 16 11 18 5 4 30 29 15 30 MIN. QFE PRESSURE IN HPA 869.0 878.5 872.0 876.2 877.0 873.9 871.1 871.9 878.2 879.8 879.0 880.0 869.0 DAY 19 11 31 3 13 29 14 31 1 11 18 6 MEAN QNH PRESSURE IN HPA 1012.7 1015.8 1012.3 1011.5 1011.4 1007.2 1004.0 1006.6 1011.6 1015.1 1015.8 1016.5 1011.7 MAX. QNH PRESSURE IN HPA 1022.2 1023.3 1019.3 1016.0 1016.6 1011.2 1009.2 1010.5 1015.1 1020.1 1019.8 1021.6 1023.3 DAY 14 7 2 16 11 18 5 4 30 29 15 30 MIN. QNH PRESSURE IN HPA 997.6 1008.2 1000.9 1005.6 1006.5 1003.1 999.9 1000.8 1007.9 1009.7 1008.8 1009.9 997.6 DAY 19 11 31 3 13 29 14 31 1 11 18 6 MEAN QFF PRESSURE IN HPA 1014.4 1016.7 1009.8 1007.7 1005.3 997.3 992.5 995.4 1002.1 1008.5 1013.3 1016.2 1006.6 MAX. QFF PRESSURE IN HPA 1024.9 1028.8 1017.7 1012.2 1009.8 1001.8 999.0 999.1 1007.1 1014.5 1019.2 1024.4 1028.8 DAY 25 7 1 10 11 17 4 30 30 29 25 30 MIN. QFF PRESSURE IN HPA 998.4 1008.8 998.2 1003.2 999.6 991.8 988.8 989.7 996.4 1002.5 1007.1 1008.9 988.8 DAY 19 26 31 3 31 29 20 31 1 3 4 6 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 880.9 883.8 880.7 880.4 880.5 876.8 873.7 876.3 880.4 883.9 883.9 884.2 880.5 MAX. QFE PRESSURE IN HPA 889.0 891.4 886.9 884.1 884.0 880.8 878.3 879.3 883.1 888.0 888.1 888.6 891.4 DAY 14 7 1 16 11 17 4 4 9 29 15 30 MIN. QFE PRESSURE IN HPA 867.7 876.2 871.1 876.0 877.1 873.1 870.3 871.2 877.2 880.0 879.3 879.2 867.7 DAY 19 26 14 7 21 29 14 8 1 22 17 4 MEAN QNH PRESSURE IN HPA 1010.9 1014.2 1010.7 1010.4 1010.4 1006.3 1002.9 1005.8 1010.3 1014.2 1014.2 1014.6 1010.4 MAX. QNH PRESSURE IN HPA 1020.0 1022.6 1017.6 1014.5 1014.4 1010.8 1008.0 1009.1 1013.4 1018.8 1019.0 1019.5 1022.6 DAY 14 7 1 16 11 17 4 4 9 29 15 30 MIN. QNH PRESSURE IN HPA 996.1 1005.6 999.9 1005.4 1006.7 1002.2 999.0 1000.1 1006.8 1009.9 1009.1 1009.0 996.1 DAY 19 26 14 7 21 29 14 8 1 22 17 4 MEAN QFF PRESSURE IN HPA 1012.6 1015.0 1008.3 1006.7 1004.4 996.6 991.5 994.8 1001.0 1007.9 1011.9 1014.2 1005.4 MAX. QFF PRESSURE IN HPA 1022.6 1027.6 1016.1 1010.8 1007.9 1003.8 998.3 997.8 1005.6 1013.1 1018.0 1021.5 1027.6 DAY 13 7 1 30 2 6 4 31 30 29 25 30 MIN. QFF PRESSURE IN HPA 997.2 1005.9 999.1 1003.0 998.3 990.6 987.6 988.5 995.3 1002.7 1004.7 1008.3 987.6 DAY 19 26 14 19 31 30 21 8 1 5 4 20 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 881.5 884.3 881.0 880.4 880.4 876.7 873.5 876.0 880.4 884.0 884.2 884.8 880.6 MAX. QFE PRESSURE IN HPA 889.6 891.9 887.0 883.6 885.2 880.4 878.2 879.2 884.0 887.8 887.4 889.0 891.9 DAY 14 7 1 17 10 17 4 3 30 29 24 10 MIN. QFE PRESSURE IN HPA 868.5 875.0 872.9 875.7 876.9 872.7 870.4 870.6 877.5 880.0 876.8 878.4 868.5 DAY 19 26 31 7 21 29 10 8 1 11 17 6 MEAN QNH PRESSURE IN HPA 1011.6 1014.7 1011.0 1010.4 1010.4 1006.2 1002.6 1005.5 1010.4 1014.4 1014.6 1015.3 1010.6 MAX. QNH PRESSURE IN HPA 1020.6 1023.2 1017.7 1013.9 1015.7 1010.3 1007.9 1009.0 1014.4 1018.6 1018.2 1020.0 1023.2 DAY 14 7 1 17 10 17 4 3 30 29 24 10 MIN. QNH PRESSURE IN HPA 997.0 1004.3 1002.0 1005.1 1006.4 1001.7 999.2 999.4 1007.1 1009.9 1006.3 1008.1 997.0 DAY 19 26 31 7 21 29 10 8 1 11 17 6 MEAN QFF PRESSURE IN HPA 1014.2 1016.6 1009.6 1007.5 1005.4 997.8 992.6 996.1 1002.9 1009.4 1013.1 1016.2 1006.8 MAX. QFF PRESSURE IN HPA 1025.0 1030.0 1017.6 1010.0 1011.0 1002.6 999.4 999.3 1008.2 1014.7 1019.3 1024.1 1030.0 DAY 13 7 1 10 15 6 4 30 30 30 24 30 MIN. QFF PRESSURE IN HPA 998.7 1004.6 1000.8 1002.7 998.3 992.0 987.7 990.0 997.7 1004.2 1004.0 1008.7 987.7 DAY 19 26 31 19 31 29 20 8 1 2 17 6 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 882.1 884.8 882.0 881.1 880.8 877.5 874.2 876.8 881.2 884.6 885.0 885.6 881.3 MAX. QFE PRESSURE IN HPA 890.0 892.2 887.3 884.8 885.9 881.3 879.0 879.6 884.4 888.8 888.5 890.3 892.2 DAY 13 7 1 16 10 17 4 3 30 29 13 29 MIN. QFE PRESSURE IN HPA 870.5 875.4 876.4 877.0 877.3 874.2 870.7 871.2 878.3 881.0 876.7 878.0 870.5 DAY 19 26 25 7 21 29 10 8 1 11 17 6 MEAN QNH PRESSURE IN HPA 1012.3 1015.3 1012.1 1011.1 1010.8 1007.1 1003.4 1006.3 1011.2 1015.0 1015.5 1016.1 1011.3 MAX. QNH PRESSURE IN HPA 1021.1 1023.5 1018.1 1015.3 1016.5 1011.3 1008.8 1009.4 1014.8 1019.7 1019.4 1021.4 1023.5 DAY 13 7 1 16 10 17 4 3 30 29 13 29 MIN. QNH PRESSURE IN HPA 999.3 1004.7 1005.9 1006.5 1006.9 1003.4 999.5 1000.1 1008.0 1011.0 1006.2 1007.7 999.3 DAY 19 26 25 7 21 29 10 8 1 11 17 6 MEAN QFF PRESSURE IN HPA 1014.9 1017.2 1010.6 1008.0 1005.3 998.2 992.7 996.3 1003.2 1009.7 1014.0 1017.2 1007.3 MAX. QFF PRESSURE IN HPA 1025.8 1030.8 1017.7 1011.7 1011.1 1003.1 1000.2 1000.3 1008.6 1015.1 1020.6 1026.1 1030.8 DAY 13 7 1 9 10 17 4 10 30 30 24 29 MIN. QFF PRESSURE IN HPA 999.8 1005.2 1003.7 1003.1 998.6 993.2 988.3 990.3 997.8 1003.9 1004.2 1008.0 988.3 DAY 19 26 25 19 31 28 19 8 1 2 17 6 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 882.4 885.0 882.0 881.4 881.2 877.8 874.7 877.3 882.1 885.0 885.1 885.9 881.7 MAX. QFE PRESSURE IN HPA 891.0 892.0 887.9 885.3 886.1 882.2 879.6 880.0 887.0 889.2 888.8 890.5 892.0 DAY 13 7 1 16 10 17 4 3 11 29 13 29 MIN. QFE PRESSURE IN HPA 871.0 876.0 875.4 877.5 877.6 874.4 871.0 871.8 879.0 881.5 876.0 878.0 871.0 DAY 19 26 6 7 21 29 10 8 14 10 17 6 MEAN QNH PRESSURE IN HPA 1012.5 1015.5 1012.1 1011.4 1011.3 1007.4 1004.0 1006.9 1012.2 1015.5 1015.6 1016.4 1011.7 MAX. QNH PRESSURE IN HPA 1022.2 1023.3 1018.7 1015.8 1016.7 1012.4 1009.4 1009.9 1017.7 1020.2 1019.7 1021.6 1023.3 DAY 13 7 1 16 10 17 4 3 11 29 13 29 MIN. QNH PRESSURE IN HPA 999.8 1005.4 1004.7 1007.1 1007.2 1003.6 999.8 1000.7 1008.8 1011.6 1005.4 1007.7 999.8 DAY 19 26 6 7 21 29 10 8 14 10 17 6 MEAN QFF PRESSURE IN HPA 1014.3 1016.4 1009.8 1007.7 1005.2 997.8 992.5 995.8 1002.9 1009.1 1013.3 1016.3 1006.7 MAX. QFF PRESSURE IN HPA 1025.4 1028.7 1016.9 1010.8 1010.8 1002.7 999.9 999.2 1008.1 1014.4 1019.4 1024.4 1028.7 DAY 13 7 1 9 10 17 4 29 30 29 24 29 MIN. QFF PRESSURE IN HPA 1001.1 1006.5 1000.9 1003.0 998.6 992.1 988.0 989.7 998.0 1002.8 1002.4 1007.0 988.0 DAY 19 26 6 19 31 29 19 8 1 2 17 6 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 M MEANS AND EXTREMES FOR THE YEAR 1958 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.5 6.6 13.2 17.9 23.1 26.9 31.0 30.5 24.6 18.9 11.3 6.9 18.0 MINIMUN AIR TEMPERATURE (C) 1.2 -0.6 6.0 9.6 13.9 16.4 20.0 19.8 13.4 10.1 5.4 3.2 9.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 1 14 11 0 0 0 0 26 DAYS WITH MINIMUM TEMP. <=-4 1 4 0 0 0 0 0 0 0 0 1 0 6 DAYS WITH FREEZING MIN.<= 0 15 17 0 0 0 0 0 0 0 0 4 5 41 TEMPERATURE RECORDS LOWEST(C) -4.0 -7.0 1.0 3.0 7.0 13.0 15.0 16.0 11.0 6.0 -4.0 0.0 -7.0 DAY 1 1 1 1 2 7 12 10 22 31 24 21 MAXIMUM AIR TEMPERATURE (C) 12.0 16.1 21.8 26.6 32.9 37.8 41.6 42.4 36.8 30.7 20.1 13.5 27.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 6 22 30 31 31 30 21 0 0 171 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 20.0 23.0 26.0 37.0 37.0 44.0 45.0 45.0 41.0 35.0 27.0 19.0 45.0 DAY 15 26 1 27 14 30 15 1 1 1 1 5 DIF. BETWEEN (MAX.-MIN.) (C) 10.8 16.7 15.8 17.0 19.0 21.4 21.6 22.6 23.4 20.6 14.7 10.3 17.8 MEAN DAILY TEMP. (MDT) (C) 6.6 7.7 13.9 18.1 23.4 27.1 30.8 31.1 25.1 20.4 12.7 8.4 18.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 10.0 94.0 183.0 305.0 313.0 122.5 18.0 0.0 0.0 1045.5 HEATING DEG. DAYS(BASE 18 0C) 353.0 287.0 127.0 39.0 1.5 0.0 0.0 0.0 0.0 3.0 158.0 298.5 1267.0 DEWPOINT (MEAN C) 0.5 -0.9 3.9 5.9 9.2 10.5 8.3 7.3 2.3 1.8 0.4 2.7 4.3 MIXING RATIO (G/KG) 4.58 4.14 5.86 6.81 8.49 9.38 7.98 7.46 5.24 5.02 4.81 5.39 6.26 VAPOUR PRESSURE (HPA) 6.46 5.85 8.23 9.54 11.87 13.02 11.07 10.37 7.34 7.08 6.79 7.61 8.77 SATURATION DEF. (HPA) 2.87 4.69 7.78 12.40 18.37 25.11 37.20 36.68 26.38 16.56 7.52 2.66 16.52 RELATIVE HUMIDITY (MEAN %) 72 61 57 50 44 38 26 25 25 34 51 76 47 RELATIVE HUMIDITY (MAX. %) 87 80 82 72 65 55 42 38 39 49 70 89 64 RELATIVE HUMIDITY (MIN. %) 53 40 34 29 27 23 16 15 15 20 31 57 30 RELATIVE HUMIDITY (MEAN% 03UTC) 83 76 79 69 62 55 42 38 39 47 64 86 62 RELATIVE HUMIDITY (MEAN% 09UTC) 59 46 42 37 31 28 18 17 17 22 36 66 35 RELATIVE HUMIDITY (MEAN% 15UTC) 68 51 45 38 37 28 20 17 18 29 46 71 39 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 94.8 6.6 38.0 45.7 8.2 4.0 0.0 0.0 0.0 7.3 36.4 177.4 418.4 DAYS WITH PRECIPITATION >=10 4 0 1 2 0 0 0 0 0 0 1 6 14 DAYS WITH PRECIPITATION >= 5 5 0 3 3 0 0 0 0 0 1 2 8 22 DAYS WITH PRECIPITATION >= 1 12 3 7 4 3 3 0 0 0 1 5 9 47 DAYS WITH PRECIPITATION 13 4 8 6 8 3 1 0 0 2 8 13 66 GREATEST DAILY PRECIPITATION 27.0 3.0 17.0 24.0 4.0 2.0 0.0 0.0 0.0 7.0 25.0 51.0 51.0 DAY 30 1 22 5 7 1 ** ** ** 30 30 7 DAY WITH THUNDER STORM 0 0 7 5 6 2 0 0 0 2 3 2 27 DAYS WITH SNOW OR SLEET 5 1 0 0 0 0 0 0 0 0 1 0 7 DAYS WITH DUST 0 0 2 3 1 0 0 0 0 0 0 0 6 WIND DIRECTION (PREVAILING) 135 90 135 135 135 315 315 315 315 315 360 360 135 PREVAILING WIND SPEED(KNOTS) 3.1 2.1 3.8 3.6 2.9 2.8 2.6 2.3 2.7 3.3 3.3 2.4 3.4 PREVAILING WIND PERCENT 45.6 37.5 50.4 52.9 21.4 33.8 27.8 28.2 22.5 24.2 30.8 35.5 19.0 CALMS PERCENT OF WIND 6.0 3.6 1.2 3.3 2.4 7.9 2.0 7.3 7.5 0.4 5.8 3.2 4.2 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 118 118 153 167 248 249 314 315 295 270 322 313 221 VECTOR WIND MAGNITUDE(KNOTS) 1.8 1.6 3.0 2.8 1.4 1.6 1.3 1.0 0.9 1.3 1.6 1.5 0.4 WIND STEADINESES (MEAN %) 64.3 59.3 66.7 54.9 26.9 39.0 40.6 43.5 36.0 34.2 40.0 53.6 11.1 WIND SPEED (MEAN KNOTS) 2.8 2.7 4.5 5.1 5.2 4.1 3.2 2.3 2.5 3.8 4.0 2.8 3.6 FASTEST WIND DIRECTION 130 230 180 270 50 130 50 180 310 180 50 230 130 FASTEST WIND SPEED (KNOTS) 30 15 28 28 26 20 18 11 9 24 26 20 30 DAY 31 23 24 20 29 1 16 23 10 28 22 7 DAYS WITH SKY CLEAR (0-2)/8 9 16 15 12 13 27 28 29 30 23 10 6 218 DAYS WITH P.CLOUDY (3-6)/8 10 9 9 8 14 3 3 2 0 7 12 14 91 DAYS WITH CLOUDY (7-8)/8 12 3 7 10 4 0 0 0 0 1 8 11 56 DAYS WITH VISIBILITY =< 2 KM 3 0 0 0 0 0 0 0 0 0 0 2 5 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 884.4 885.2 882.4 881.9 882.1 876.9 873.5 875.2 878.5 883.6 886.2 885.2 881.3 MAX. QFE PRESSURE IN HPA 891.0 891.7 889.7 888.7 889.7 882.6 878.0 879.2 883.8 890.7 891.6 891.7 891.7 DAY-HOUR 14- 6 18- 6 10- 6 2- 3 13- 6 2- 6 16- 6 19- 6 30- 6 22- 6 4- 6 5- 6 MIN. QFE PRESSURE IN HPA 874.7 876.7 873.4 874.5 875.9 870.4 867.0 871.7 873.4 878.8 876.2 878.1 867.0 DAY-HOUR 30- 9 1- 0 24-12 29-12 19-18 30-15 9-15 1-15 1-12 12-12 30-21 1-12 MEAN QNH PRESSURE IN HPA 1014.8 1015.7 1012.6 1012.1 1012.2 1006.5 1002.6 1004.6 1008.2 1013.9 1016.8 1015.7 1011.3 MAX. QNH PRESSURE IN HPA 1022.2 1023.0 1020.7 1019.6 1020.7 1012.8 1007.7 1009.0 1014.1 1021.9 1022.9 1023.0 1023.0 DAY-HOUR 14- 6 18- 6 10- 6 2- 3 13- 6 2- 6 16- 6 19- 6 30- 6 22- 6 4- 6 5- 6 MIN. QNH PRESSURE IN HPA 1004.0 1006.2 1002.5 1003.7 1005.3 999.2 995.4 1000.6 1002.5 1008.6 1005.6 1007.8 995.4 DAY-HOUR 30- 9 1- 0 24-12 29-12 19-18 30-15 9-15 1-15 1-12 12-12 30-21 1-12 MEAN QFF PRESSURE IN HPA 1015.6 1016.1 1009.5 1006.8 1004.5 996.9 991.4 993.6 999.9 1008.3 1014.8 1015.7 1006.1 MAX. QFF PRESSURE IN HPA 1024.2 1024.3 1019.5 1015.9 1012.9 1005.4 999.1 1000.4 1008.1 1018.3 1025.1 1022.5 1025.1 DAY-HOUR 12- 6 1- 6 10- 6 1- 3 13- 6 2- 3 12- 3 22- 3 30- 3 31- 3 23- 6 5- 6 MIN. QFF PRESSURE IN HPA 1004.9 1006.7 998.1 996.1 996.0 988.0 986.3 987.9 992.0 1001.3 1005.0 1006.8 986.3 DAY-HOUR 30- 9 23-12 24-12 3- 9 20-12 30-12 9-12 1-12 1-12 12- 9 30-21 1-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 884.9 885.4 882.8 882.3 882.3 877.6 874.4 875.8 879.0 883.9 886.6 885.3 881.7 MAX. QFE PRESSURE IN HPA 890.6 890.4 886.5 888.3 887.6 882.2 877.8 878.4 882.8 888.8 890.8 890.4 890.8 DAY 14 18 1 2 13 4 14 19 30 23 4 5 MIN. QFE PRESSURE IN HPA 877.0 876.7 877.0 876.6 877.0 873.5 869.3 874.0 875.8 880.7 883.5 878.2 869.3 DAY 30 1 24 29 20 28 10 2 1 12 21 1 MEAN QNH PRESSURE IN HPA 1015.4 1015.9 1013.1 1012.5 1012.5 1007.2 1003.6 1005.2 1008.8 1014.3 1017.3 1015.8 1011.8 MAX. QNH PRESSURE IN HPA 1021.7 1021.5 1017.2 1019.2 1018.4 1012.4 1007.4 1008.1 1013.0 1019.7 1022.0 1021.5 1022.0 DAY 14 18 1 2 13 4 14 19 30 23 4 5 MIN. QNH PRESSURE IN HPA 1006.5 1006.2 1006.5 1006.1 1006.5 1002.6 997.9 1003.2 1005.2 1010.7 1013.8 1007.9 997.9 DAY 30 1 24 29 20 28 10 2 1 12 21 1 MEAN QFF PRESSURE IN HPA 1015.7 1015.8 1009.6 1006.9 1004.4 997.6 992.0 993.8 1000.1 1007.9 1014.6 1015.3 1006.1 MAX. QFF PRESSURE IN HPA 1021.2 1022.1 1014.3 1013.8 1010.5 1003.1 997.7 997.7 1005.6 1014.4 1022.8 1019.9 1022.8 DAY 14 2 1 1 13 2 12 19 30 31 23 27 MIN. QFF PRESSURE IN HPA 1007.5 1007.6 1001.4 997.2 997.0 991.3 988.0 990.6 995.0 1003.3 1009.9 1006.8 988.0 DAY 30 23 24 29 20 28 10 2 1 12 12 1 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 884.9 885.5 883.0 882.5 882.6 877.8 874.7 876.4 879.7 884.4 886.9 885.5 882.0 MAX. QFE PRESSURE IN HPA 890.7 891.0 886.8 888.7 888.3 882.4 877.4 879.0 883.6 890.0 891.0 890.7 891.0 DAY 14 18 1 2 13 2 12 19 30 22 4 5 MIN. QFE PRESSURE IN HPA 875.0 877.6 876.6 876.7 877.5 873.6 869.6 874.3 875.9 881.0 882.7 879.4 869.6 DAY 30 1 9 29 20 28 10 1 1 12 30 1 MEAN QNH PRESSURE IN HPA 1015.3 1016.1 1013.2 1012.7 1012.8 1007.5 1003.9 1005.8 1009.6 1014.8 1017.6 1016.1 1012.1 MAX. QNH PRESSURE IN HPA 1021.9 1022.2 1017.5 1019.6 1019.2 1012.6 1007.0 1008.8 1013.9 1021.1 1022.2 1021.9 1022.2 DAY 14 18 1 2 13 2 12 19 30 22 4 5 MIN. QNH PRESSURE IN HPA 1004.3 1007.2 1006.1 1006.2 1007.1 1002.7 998.3 1003.5 1005.3 1011.0 1012.9 1009.2 998.3 DAY 30 1 9 29 20 28 10 1 1 12 30 1 MEAN QFF PRESSURE IN HPA 1016.5 1017.2 1011.0 1008.3 1006.2 998.7 994.0 996.1 1002.7 1010.5 1016.5 1016.5 1007.9 MAX. QFF PRESSURE IN HPA 1022.8 1023.4 1016.3 1015.9 1011.7 1005.4 999.1 1000.4 1008.1 1018.3 1024.7 1021.4 1024.7 DAY 14 18 17 1 13 2 12 22 30 31 23 5 MIN. QFF PRESSURE IN HPA 1005.4 1007.9 1001.6 999.9 998.7 992.1 989.9 992.6 996.8 1006.0 1010.2 1009.1 989.9 DAY 30 23 9 29 20 28 9 1 1 12 21 9 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 885.5 886.5 883.8 883.0 883.1 877.8 874.6 876.4 879.7 884.8 887.5 886.2 882.4 MAX. QFE PRESSURE IN HPA 891.0 891.7 889.7 888.7 889.7 882.6 878.0 879.2 883.8 890.7 891.6 891.7 891.7 DAY 14 18 10 2 13 2 16 19 30 22 4 5 MIN. QFE PRESSURE IN HPA 875.0 881.2 877.7 875.4 877.8 873.3 869.8 874.0 876.5 881.2 882.3 879.3 869.8 DAY 30 5 9 20 20 30 9 5 1 12 14 1 MEAN QNH PRESSURE IN HPA 1016.0 1017.2 1014.1 1013.3 1013.3 1007.5 1003.8 1005.9 1009.6 1015.3 1018.3 1016.9 1012.6 MAX. QNH PRESSURE IN HPA 1022.2 1023.0 1020.7 1019.6 1020.7 1012.8 1007.7 1009.0 1014.1 1021.9 1022.9 1023.0 1023.0 DAY 14 18 10 2 13 2 16 19 30 22 4 5 MIN. QNH PRESSURE IN HPA 1004.3 1011.2 1007.3 1004.7 1007.4 1002.4 998.5 1003.2 1006.0 1011.2 1012.5 1009.1 998.5 DAY 30 5 9 20 20 30 9 5 1 12 14 1 MEAN QFF PRESSURE IN HPA 1017.4 1018.4 1011.4 1008.2 1005.8 998.3 992.7 995.2 1001.6 1010.1 1016.9 1017.5 1007.8 MAX. QFF PRESSURE IN HPA 1024.2 1024.3 1019.5 1015.6 1012.9 1004.9 996.8 999.2 1007.1 1018.2 1025.1 1022.5 1025.1 DAY 12 1 10 1 13 2 12 23 30 31 23 5 MIN. QFF PRESSURE IN HPA 1005.5 1009.3 1002.4 999.0 998.5 991.6 987.7 991.1 996.6 1004.5 1009.7 1009.4 987.7 DAY 30 23 24 29 20 30 9 5 1 12 14 1 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 884.7 885.8 882.8 882.1 882.5 877.2 873.5 875.3 878.5 883.4 886.5 885.6 881.5 MAX. QFE PRESSURE IN HPA 890.4 891.3 886.0 887.4 888.9 881.9 877.0 879.0 882.5 889.1 890.5 890.6 891.3 DAY 14 18 27 1 13 4 29 6 29 22 23 5 MIN. QFE PRESSURE IN HPA 874.7 880.3 876.4 874.6 877.4 872.4 868.5 872.7 874.8 879.4 881.4 879.5 868.5 DAY 30 23 24 3 20 30 9 1 1 12 21 1 MEAN QNH PRESSURE IN HPA 1015.2 1016.4 1013.0 1012.2 1012.7 1006.7 1002.6 1004.6 1008.2 1013.7 1017.1 1016.2 1011.5 MAX. QNH PRESSURE IN HPA 1021.5 1022.5 1016.6 1018.2 1019.8 1012.0 1006.5 1008.8 1012.7 1020.1 1021.6 1021.7 1022.5 DAY 14 18 27 1 13 4 29 6 29 22 23 5 MIN. QNH PRESSURE IN HPA 1004.0 1010.2 1005.9 1003.9 1007.0 1001.4 997.0 1001.7 1004.1 1009.2 1011.5 1009.3 997.0 DAY 30 23 24 3 20 30 9 1 1 12 21 1 MEAN QFF PRESSURE IN HPA 1015.5 1016.1 1009.2 1006.3 1004.2 996.4 990.6 992.6 998.8 1006.9 1014.4 1015.7 1005.6 MAX. QFF PRESSURE IN HPA 1021.7 1023.8 1013.3 1013.3 1011.3 1002.4 995.0 996.7 1003.9 1014.2 1022.2 1019.4 1023.8 DAY 2 1 1 24 13 2 12 22 29 31 23 5 MIN. QFF PRESSURE IN HPA 1004.9 1006.9 1001.0 996.1 997.7 989.4 986.5 988.3 993.2 1001.3 1007.5 1008.6 986.5 DAY 30 23 24 3 20 30 9 1 1 12 21 9 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 883.2 884.1 881.2 881.3 881.4 875.9 872.6 873.9 877.2 882.4 885.2 884.4 880.2 MAX. QFE PRESSURE IN HPA 888.6 889.4 885.0 887.0 887.3 880.8 876.1 876.8 881.4 887.9 888.8 890.0 890.0 DAY 13 18 27 1 13 2 16 22 29 22 4 5 MIN. QFE PRESSURE IN HPA 875.2 878.5 873.4 874.5 876.2 871.2 867.9 871.9 873.4 878.8 879.0 878.1 867.9 DAY 30 5 24 29 20 30 9 1 1 12 30 1 MEAN QNH PRESSURE IN HPA 1013.4 1014.5 1011.2 1011.3 1011.4 1005.3 1001.7 1003.1 1006.8 1012.6 1015.7 1014.8 1010.1 MAX. QNH PRESSURE IN HPA 1019.5 1020.4 1015.5 1017.7 1018.1 1010.8 1005.5 1006.3 1011.5 1018.7 1019.7 1021.1 1021.1 DAY 13 18 27 1 13 2 16 22 29 22 4 5 MIN. QNH PRESSURE IN HPA 1004.5 1008.2 1002.5 1003.7 1005.6 1000.1 996.4 1000.8 1002.5 1008.6 1008.8 1007.8 996.4 DAY 30 5 24 29 20 30 9 1 1 12 30 1 MEAN QFF PRESSURE IN HPA 1013.7 1014.0 1007.6 1005.6 1003.2 995.4 989.9 991.4 997.9 1006.2 1012.9 1014.2 1004.3 MAX. QFF PRESSURE IN HPA 1020.0 1021.9 1012.3 1013.3 1009.9 1002.1 994.3 995.6 1003.8 1013.0 1018.7 1018.8 1021.9 DAY 2 1 27 1 7 2 8 22 30 22 23 5 MIN. QFF PRESSURE IN HPA 1005.0 1006.7 998.1 996.2 996.0 988.0 986.3 987.9 992.0 1001.6 1006.7 1006.8 986.3 DAY 30 23 24 29 20 30 9 1 1 9 21 1 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 883.7 884.6 881.4 881.0 881.0 875.4 872.0 873.9 877.0 882.8 885.2 884.3 880.2 MAX. QFE PRESSURE IN HPA 888.9 889.4 885.3 886.7 886.7 879.9 875.1 876.7 881.2 888.0 890.5 889.4 890.5 DAY 12 6 27 1 13 4 29 18 29 22 3 5 MIN. QFE PRESSURE IN HPA 875.0 879.0 874.7 875.4 876.2 870.4 867.0 871.7 873.8 879.3 879.4 879.6 867.0 DAY 31 5 24 29 20 30 9 1 4 12 30 1 MEAN QNH PRESSURE IN HPA 1014.0 1015.0 1011.5 1011.0 1011.0 1004.7 1001.0 1003.1 1006.5 1013.0 1015.8 1014.7 1010.1 MAX. QNH PRESSURE IN HPA 1019.8 1020.4 1015.8 1017.4 1017.4 1009.8 1004.4 1006.2 1011.2 1018.8 1021.6 1020.4 1021.6 DAY 12 6 27 1 13 4 29 18 29 22 3 5 MIN. QNH PRESSURE IN HPA 1004.3 1008.8 1004.0 1004.7 1005.6 999.2 995.4 1000.6 1003.0 1009.1 1009.2 1009.4 995.4 DAY 31 5 24 29 20 30 9 1 4 12 30 1 MEAN QFF PRESSURE IN HPA 1015.2 1015.9 1009.2 1006.5 1004.3 995.7 990.9 993.3 999.6 1008.6 1014.6 1015.1 1005.7 MAX. QFF PRESSURE IN HPA 1021.8 1023.5 1014.7 1014.4 1009.8 1002.0 994.3 997.7 1005.2 1016.0 1021.7 1020.2 1023.5 DAY 12 1 27 1 7 1 11 18 29 31 23 5 MIN. QFF PRESSURE IN HPA 1006.2 1009.1 1000.4 998.5 997.7 988.3 987.1 989.4 994.6 1003.8 1008.4 1007.5 987.1 DAY 31 23 24 29 19 30 9 1 1 2 30 9 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 884.2 884.7 882.0 881.6 881.7 876.6 872.8 874.8 878.0 883.3 885.9 884.9 880.9 MAX. QFE PRESSURE IN HPA 890.0 890.0 885.7 888.3 887.4 880.9 875.7 879.0 882.0 888.5 890.6 889.3 890.6 DAY 13 18 27 1 13 1 29 14 29 22 3 5 MIN. QFE PRESSURE IN HPA 875.6 877.0 874.9 876.5 875.9 871.7 868.0 872.4 875.0 880.0 879.8 881.0 868.0 DAY 31 1 24 20 19 30 9 1 1 12 30 1 MEAN QNH PRESSURE IN HPA 1014.6 1015.2 1012.1 1011.7 1011.8 1006.1 1001.8 1004.1 1007.6 1013.6 1016.5 1015.4 1010.9 MAX. QNH PRESSURE IN HPA 1021.1 1021.1 1016.3 1019.2 1018.2 1010.9 1005.1 1008.8 1012.1 1019.4 1021.7 1020.3 1021.7 DAY 13 18 27 1 13 1 29 14 29 22 3 5 MIN. QNH PRESSURE IN HPA 1005.0 1006.5 1004.2 1006.0 1005.3 1000.6 996.5 1001.4 1004.3 1009.9 1009.7 1011.0 996.5 DAY 31 1 24 20 19 30 9 1 1 12 30 1 MEAN QFF PRESSURE IN HPA 1015.9 1016.3 1009.4 1006.5 1004.1 996.9 990.6 993.4 999.7 1008.5 1015.1 1016.0 1006.0 MAX. QFF PRESSURE IN HPA 1022.0 1022.3 1014.0 1014.5 1010.9 1003.1 995.2 997.4 1005.1 1016.2 1022.8 1021.0 1022.8 DAY 13 18 27 1 7 1 11 14 30 31 22 26 MIN. QFF PRESSURE IN HPA 1007.0 1010.2 1000.2 998.1 996.7 990.0 986.5 989.5 994.9 1003.3 1009.5 1008.1 986.5 DAY 31 23 24 28 19 30 9 1 1 12 30 8 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 884.4 885.4 882.5 881.8 882.0 877.3 873.8 875.4 878.6 883.7 886.0 885.1 881.3 MAX. QFE PRESSURE IN HPA 890.4 889.7 886.4 888.3 887.2 881.8 877.2 878.0 882.6 888.6 890.7 889.2 890.7 DAY 13 17 31 1 13 3 1 22 29 22 3 5 MIN. QFE PRESSURE IN HPA 876.2 880.2 876.6 876.8 876.6 871.8 868.5 873.3 875.6 880.5 876.2 881.2 868.5 DAY 31 5 24 28 19 30 9 1 3 12 30 8 MEAN QNH PRESSURE IN HPA 1014.8 1015.9 1012.7 1011.9 1012.1 1006.9 1002.9 1004.7 1008.4 1014.1 1016.6 1015.6 1011.4 MAX. QNH PRESSURE IN HPA 1021.5 1020.7 1017.0 1019.2 1017.9 1011.9 1006.8 1007.7 1012.8 1019.5 1021.9 1020.2 1021.9 DAY 13 17 31 1 13 3 1 22 29 22 3 5 MIN. QNH PRESSURE IN HPA 1005.6 1010.1 1006.1 1006.3 1006.1 1000.7 997.0 1002.4 1005.0 1010.5 1005.6 1011.2 997.0 DAY 31 5 24 28 19 30 9 1 3 12 30 8 MEAN QFF PRESSURE IN HPA 1015.2 1015.7 1008.9 1006.0 1003.8 996.6 991.0 992.9 999.1 1007.4 1013.8 1015.2 1005.5 MAX. QFF PRESSURE IN HPA 1021.4 1022.6 1013.1 1013.4 1009.7 1002.2 995.8 996.8 1004.2 1014.8 1022.1 1019.1 1022.6 DAY 13 1 16 1 13 3 11 22 29 31 22 26 MIN. QFF PRESSURE IN HPA 1008.0 1008.2 1001.5 997.7 996.7 989.0 986.9 989.5 994.4 1002.4 1005.0 1008.7 986.9 DAY 31 22 23 28 19 30 9 1 1 2 30 8 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 M MEANS AND EXTREMES FOR THE YEAR 1959 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.6 2.2 9.7 17.9 20.6 26.9 30.8 28.4 23.3 18.0 10.3 5.8 16.6 MINIMUN AIR TEMPERATURE (C) 0.5 -2.1 4.0 10.1 12.1 16.0 20.9 17.8 12.3 9.8 4.6 0.2 8.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 18 1 0 0 0 0 19 DAYS WITH MINIMUM TEMP. <=-4 1 8 1 0 0 0 0 0 0 0 0 1 11 DAYS WITH FREEZING MIN.<= 0 15 21 9 0 0 0 0 0 0 0 2 17 64 TEMPERATURE RECORDS LOWEST(C) -4.0 -11.0 -6.0 4.0 7.0 11.0 17.0 15.0 9.0 6.0 -1.0 -5.0 -11.0 DAY 25 21 9 8 11 7 1 27 18 8 27 15 MAXIMUM AIR TEMPERATURE (C) 13.7 8.7 17.1 27.6 29.7 37.8 41.7 41.1 36.7 28.5 18.8 14.5 26.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 13 17 29 31 31 30 12 0 0 163 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 20.0 15.0 26.0 36.0 37.0 42.0 45.0 45.0 42.0 34.0 24.0 18.0 45.0 DAY 30 14 16 29 27 20 7 8 1 1 1 8 DIF. BETWEEN (MAX.-MIN.) (C) 13.2 10.8 13.1 17.5 17.6 21.8 20.8 23.3 24.4 18.7 14.2 14.3 17.4 MEAN DAILY TEMP. (MDT) (C) 7.1 3.3 10.6 18.9 20.9 26.9 31.3 29.5 24.5 19.2 11.7 7.4 17.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 16.5 40.5 177.0 320.0 262.0 105.5 7.5 0.0 0.0 929.0 HEATING DEG. DAYS(BASE 18 0C) 338.5 411.5 230.5 34.5 11.5 0.0 0.0 0.0 0.0 13.5 188.5 329.5 1558.0 DEWPOINT (MEAN C) -0.5 -3.4 1.6 7.0 8.0 10.4 12.9 7.6 2.3 4.0 0.4 -2.2 4.0 MIXING RATIO (G/KG) 4.29 3.53 5.04 7.42 7.78 9.57 11.19 7.71 5.26 6.10 4.55 3.79 6.35 VAPOUR PRESSURE (HPA) 6.05 4.96 7.08 10.40 10.87 13.26 15.40 10.68 7.35 8.58 6.42 5.37 8.87 SATURATION DEF. (HPA) 3.48 2.46 5.90 11.67 15.19 25.22 31.96 31.20 24.40 13.72 6.92 4.34 14.71 RELATIVE HUMIDITY (MEAN %) 67 68 61 54 49 38 35 29 28 44 54 59 49 RELATIVE HUMIDITY (MAX. %) 86 83 80 78 74 55 49 43 41 62 72 77 67 RELATIVE HUMIDITY (MIN. %) 47 51 41 32 29 24 25 16 14 26 34 38 31 RELATIVE HUMIDITY (MEAN% 03UTC) 80 72 76 74 71 54 49 43 41 59 68 74 63 RELATIVE HUMIDITY (MEAN% 09UTC) 53 62 48 40 35 27 27 20 19 33 43 44 38 RELATIVE HUMIDITY (MEAN% 15UTC) 59 63 51 41 37 27 28 20 17 33 45 47 39 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 64.6 52.6 60.4 51.2 82.0 0.0 0.0 0.0 0.0 31.0 32.4 6.0 380.2 DAYS WITH PRECIPITATION >=10 1 1 2 2 2 0 0 0 0 1 1 0 10 DAYS WITH PRECIPITATION >= 5 3 5 4 3 2 0 0 0 0 1 3 0 21 DAYS WITH PRECIPITATION >= 1 7 9 8 5 5 0 0 0 0 2 4 4 44 DAYS WITH PRECIPITATION 10 13 11 7 6 0 0 0 0 3 5 5 60 GREATEST DAILY PRECIPITATION 43.0 17.4 24.0 22.0 41.0 0.0 0.0 0.0 0.0 28.0 13.0 2.0 43.0 DAY 20 8 22 6 10 ** ** ** ** 23 25 1 DAY WITH THUNDER STORM 0 0 2 1 5 0 0 0 0 1 0 0 9 DAYS WITH SNOW OR SLEET 3 10 3 0 0 0 0 0 0 0 1 0 17 DAYS WITH DUST 0 0 2 4 2 6 6 8 4 7 4 2 45 WIND DIRECTION (PREVAILING) 360 315 360 360 315 360 360 225 315 315 360 360 360 PREVAILING WIND SPEED(KNOTS) 2.4 3.0 2.3 2.1 2.9 2.2 2.9 6.2 2.5 3.1 3.1 3.7 2.5 PREVAILING WIND PERCENT 36.3 31.7 31.5 27.1 35.5 27.5 22.6 25.8 23.3 27.0 25.0 30.2 26.1 CALMS PERCENT OF WIND 3.2 0.0 0.0 0.8 0.0 0.4 3.6 19.0 15.4 21.8 17.5 13.3 8.0 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 337 292 246 280 286 268 276 252 257 266 299 336 281 VECTOR WIND MAGNITUDE(KNOTS) 1.4 1.2 0.9 1.3 1.6 2.0 1.6 2.1 1.6 2.1 1.0 1.7 1.4 WIND STEADINESES (MEAN %) 48.3 32.4 20.0 39.4 47.1 51.3 38.1 60.0 45.7 56.8 26.3 50.0 38.9 WIND SPEED (MEAN KNOTS) 2.9 3.7 4.5 3.3 3.4 3.9 4.2 3.5 3.5 3.7 3.8 3.4 3.6 FASTEST WIND DIRECTION 90 180 130 230 270 230 230 230 230 230 230 360 130 FASTEST WIND SPEED (KNOTS) 15 30 34 34 34 25 15 15 12 30 25 30 34 DAY 31 25 17 6 19 3 10 9 3 22 7 14 DAYS WITH SKY CLEAR (0-2)/8 11 9 8 13 16 30 29 31 30 25 14 22 238 DAYS WITH P.CLOUDY (3-6)/8 12 7 10 8 10 0 2 0 0 4 12 5 70 DAYS WITH CLOUDY (7-8)/8 8 12 13 9 5 0 0 0 0 2 4 4 57 DAYS WITH VISIBILITY =< 2 KM 3 5 1 0 4 1 0 0 0 1 1 0 16 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 884.5 880.8 882.5 882.9 879.4 877.3 872.9 873.4 877.6 884.1 884.8 887.2 880.6 MAX. QFE PRESSURE IN HPA 889.5 888.5 890.0 890.3 885.5 883.6 876.1 878.8 883.3 891.1 890.5 893.4 893.4 DAY-HOUR 3- 6 22- 6 9- 9 8- 6 1- 9 12- 6 1- 3 29- 6 23- 6 26- 6 9- 6 16- 6 MIN. QFE PRESSURE IN HPA 877.4 870.2 875.9 872.1 871.0 868.1 866.7 869.5 872.0 879.1 875.9 882.1 866.7 DAY-HOUR 22-15 25- 6 1- 0 6-12 9-12 28-15 3-15 3-12 2-15 4-12 25- 9 11-15 MEAN QNH PRESSURE IN HPA 1014.9 1010.8 1012.7 1013.1 1009.3 1006.9 1002.0 1002.5 1007.2 1014.5 1015.3 1018.0 1010.6 MAX. QNH PRESSURE IN HPA 1020.5 1019.4 1021.1 1021.4 1016.0 1013.9 1005.5 1008.6 1013.6 1022.3 1021.6 1024.9 1024.9 DAY-HOUR 3- 6 22- 6 9- 9 8- 6 1- 9 12- 6 1- 3 29- 6 23- 6 26- 6 9- 6 16- 6 MIN. QNH PRESSURE IN HPA 1007.0 998.9 1005.3 1001.1 999.8 996.6 995.0 998.1 1000.9 1008.9 1005.3 1012.2 995.0 DAY-HOUR 22-15 25- 6 1- 0 6-12 9-12 28-15 3-15 3-12 2-15 4-12 25- 9 11-15 MEAN QFF PRESSURE IN HPA 1015.7 1013.2 1011.4 1007.8 1002.6 997.4 990.6 992.3 999.5 1009.2 1013.7 1018.8 1006.0 MAX. QFF PRESSURE IN HPA 1024.7 1026.6 1025.3 1019.9 1009.6 1005.1 996.0 1001.2 1008.0 1017.9 1020.6 1028.7 1028.7 DAY-HOUR 3- 6 22- 6 9- 3 8- 6 1- 9 7- 6 1- 3 29- 6 27- 6 26- 6 9- 6 16- 6 MIN. QFF PRESSURE IN HPA 1008.1 999.5 1002.7 997.6 993.6 985.3 982.4 986.4 990.7 1001.7 1004.3 1011.5 982.4 DAY-HOUR 22-12 25- 6 22-12 6-12 31-12 28-12 3-12 3-12 2-12 4-12 25- 6 9-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 884.8 881.0 882.7 883.0 879.8 877.7 873.3 873.9 878.1 884.5 885.2 887.4 880.9 MAX. QFE PRESSURE IN HPA 889.0 887.6 889.2 889.0 884.2 881.8 875.7 878.4 882.7 890.4 889.6 892.6 892.6 DAY 3 3 11 8 1 13 1 29 27 26 10 17 MIN. QFE PRESSURE IN HPA 878.7 873.0 875.9 876.8 874.6 870.2 869.2 871.0 874.2 880.2 879.0 882.7 869.2 DAY 23 20 1 6 19 28 3 3 3 12 25 1 MEAN QNH PRESSURE IN HPA 1015.2 1011.0 1012.9 1013.2 1009.6 1007.4 1002.4 1003.1 1007.7 1014.9 1015.8 1018.2 1010.9 MAX. QNH PRESSURE IN HPA 1020.0 1018.4 1020.2 1020.0 1014.6 1011.9 1005.1 1008.1 1012.9 1021.5 1020.6 1024.0 1024.0 DAY 3 3 11 8 1 13 1 29 27 26 10 17 MIN. QNH PRESSURE IN HPA 1008.4 1002.1 1005.3 1006.3 1003.9 998.9 997.8 999.8 1003.4 1010.1 1008.8 1012.9 997.8 DAY 23 20 1 6 19 28 3 3 3 12 25 1 MEAN QFF PRESSURE IN HPA 1015.4 1013.1 1011.2 1007.6 1002.8 997.5 990.6 992.2 999.2 1008.9 1013.6 1018.3 1005.9 MAX. QFF PRESSURE IN HPA 1022.4 1022.1 1023.0 1017.4 1008.8 1002.8 994.6 999.0 1005.5 1016.1 1018.6 1025.3 1025.3 DAY 3 23 9 8 11 8 1 29 27 26 23 16 MIN. QFF PRESSURE IN HPA 1009.7 1002.2 1002.7 1000.8 995.4 987.6 984.9 988.5 992.8 1003.2 1006.9 1013.6 984.9 DAY 20 25 31 6 31 28 3 10 3 12 25 10 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 885.0 881.1 882.8 883.4 880.0 878.1 873.7 874.1 878.5 884.5 885.3 887.5 881.2 MAX. QFE PRESSURE IN HPA 889.1 887.6 889.5 889.3 884.0 882.4 876.1 878.5 883.0 890.8 889.8 892.7 892.7 DAY 3 3 9 8 1 12 1 29 23 26 10 16 MIN. QFE PRESSURE IN HPA 879.0 872.0 876.1 876.7 875.0 870.2 869.5 870.8 874.6 879.8 877.5 883.7 869.5 DAY 23 20 1 6 19 28 3 3 3 4 25 12 MEAN QNH PRESSURE IN HPA 1015.5 1011.2 1013.0 1013.7 1009.9 1007.7 1002.8 1003.3 1008.2 1015.0 1015.9 1018.3 1011.2 MAX. QNH PRESSURE IN HPA 1020.1 1018.4 1020.5 1020.3 1014.4 1012.6 1005.5 1008.2 1013.2 1022.0 1020.9 1024.1 1024.1 DAY 3 3 9 8 1 12 1 29 23 26 10 16 MIN. QNH PRESSURE IN HPA 1008.8 1000.9 1005.5 1006.2 1004.3 998.9 998.1 999.6 1003.9 1009.7 1007.1 1014.0 998.1 DAY 23 20 1 6 19 28 3 3 3 4 25 12 MEAN QFF PRESSURE IN HPA 1016.8 1014.0 1012.4 1009.2 1004.2 999.1 992.3 993.9 1001.3 1010.2 1014.6 1019.6 1007.3 MAX. QFF PRESSURE IN HPA 1024.1 1024.0 1025.3 1019.0 1009.2 1005.0 996.0 1000.3 1007.2 1017.4 1019.3 1027.3 1027.3 DAY 3 22 9 8 6 12 1 29 23 26 9 16 MIN. QFF PRESSURE IN HPA 1009.9 1001.8 1004.0 1001.9 996.8 988.9 986.1 989.8 994.9 1003.3 1005.7 1014.0 986.1 DAY 20 25 31 6 31 28 3 3 3 4 25 29 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 885.7 881.7 883.5 884.0 880.7 878.3 874.0 874.0 878.6 885.2 885.9 888.4 881.7 MAX. QFE PRESSURE IN HPA 889.5 888.5 889.8 890.3 884.4 883.6 876.0 878.8 883.3 891.1 890.5 893.4 893.4 DAY 3 22 9 8 1 12 8 29 23 26 9 16 MIN. QFE PRESSURE IN HPA 879.7 870.2 877.2 874.9 875.4 870.0 870.3 870.6 875.3 880.1 876.9 884.6 870.0 DAY 23 25 1 6 31 28 3 5 5 4 25 12 MEAN QNH PRESSURE IN HPA 1016.3 1011.8 1013.8 1014.4 1010.7 1008.0 1003.2 1003.2 1008.4 1015.7 1016.5 1019.3 1011.8 MAX. QNH PRESSURE IN HPA 1020.5 1019.4 1020.9 1021.4 1014.8 1013.9 1005.4 1008.6 1013.6 1022.3 1021.6 1024.9 1024.9 DAY 3 22 9 8 1 12 8 29 23 26 9 16 MIN. QNH PRESSURE IN HPA 1009.6 998.9 1006.8 1004.2 1004.7 998.7 999.0 999.4 1004.6 1010.0 1006.4 1015.0 998.7 DAY 23 25 1 6 31 28 3 5 5 4 25 12 MEAN QFF PRESSURE IN HPA 1017.9 1014.7 1013.0 1009.4 1004.1 998.9 992.3 993.7 1001.4 1011.1 1015.5 1021.1 1007.8 MAX. QFF PRESSURE IN HPA 1024.7 1026.6 1024.9 1019.9 1008.9 1005.1 995.8 1001.2 1008.0 1017.9 1020.6 1028.7 1028.7 DAY 3 22 9 8 11 7 1 29 27 26 9 16 MIN. QFF PRESSURE IN HPA 1012.1 999.5 1005.0 1000.4 996.7 989.0 987.9 989.3 995.5 1003.6 1004.3 1016.1 987.9 DAY 22 25 26 6 31 28 3 5 5 4 25 10 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 884.9 881.1 882.9 883.3 879.7 877.5 873.2 873.3 877.6 884.4 884.9 887.7 880.9 MAX. QFE PRESSURE IN HPA 888.0 888.4 890.0 889.7 885.5 882.8 875.3 877.7 882.1 890.4 889.4 892.7 892.7 DAY 14 22 9 8 1 12 8 29 23 25 9 16 MIN. QFE PRESSURE IN HPA 877.9 872.6 877.0 873.6 874.6 869.2 869.5 869.9 874.2 879.5 875.9 883.8 869.2 DAY 22 25 26 6 31 28 3 4 11 4 25 10 MEAN QNH PRESSURE IN HPA 1015.4 1011.1 1013.1 1013.6 1009.6 1007.1 1002.3 1002.4 1007.2 1014.8 1015.3 1018.5 1010.9 MAX. QNH PRESSURE IN HPA 1018.8 1019.3 1021.1 1020.7 1016.0 1013.0 1004.6 1007.3 1012.2 1021.5 1020.4 1024.1 1024.1 DAY 14 22 9 8 1 12 8 29 23 25 9 16 MIN. QNH PRESSURE IN HPA 1007.5 1001.6 1006.5 1002.7 1003.9 997.8 998.1 998.6 1003.4 1009.3 1005.3 1014.1 997.8 DAY 22 25 26 6 31 28 3 4 11 4 25 10 MEAN QFF PRESSURE IN HPA 1015.6 1012.9 1011.3 1007.6 1002.1 996.9 990.2 991.7 998.8 1008.9 1013.3 1018.8 1005.7 MAX. QFF PRESSURE IN HPA 1020.6 1024.7 1023.8 1017.3 1009.6 1003.3 993.4 998.2 1005.0 1017.0 1018.3 1025.5 1025.5 DAY 26 22 9 8 1 12 1 29 26 24 26 16 MIN. QFF PRESSURE IN HPA 1008.2 1003.6 1003.4 999.1 995.1 986.3 985.3 986.7 993.1 1001.7 1005.1 1013.1 985.3 DAY 22 25 26 6 31 28 3 4 5 4 25 10 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 883.4 880.4 881.7 882.2 878.7 876.6 872.0 872.4 876.1 883.0 883.6 885.9 879.7 MAX. QFE PRESSURE IN HPA 887.2 887.2 889.3 888.0 883.0 880.8 873.9 876.8 880.8 889.7 888.3 890.3 890.3 DAY 14 1 9 8 1 12 30 28 23 25 22 16 MIN. QFE PRESSURE IN HPA 877.5 873.9 876.1 872.1 871.0 868.4 867.6 869.5 872.5 879.1 877.3 882.3 867.6 DAY 22 25 1 6 9 28 3 3 2 4 25 13 MEAN QNH PRESSURE IN HPA 1013.7 1010.3 1011.8 1012.3 1008.4 1006.1 1001.0 1001.3 1005.5 1013.3 1013.9 1016.5 1009.5 MAX. QNH PRESSURE IN HPA 1017.9 1017.9 1020.3 1018.8 1013.2 1010.8 1003.1 1006.3 1010.8 1020.7 1019.2 1021.4 1021.4 DAY 14 1 9 8 1 12 30 28 23 25 22 16 MIN. QNH PRESSURE IN HPA 1007.1 1003.1 1005.5 1001.1 999.8 996.9 996.0 998.1 1001.5 1008.9 1006.9 1012.5 996.0 DAY 22 25 1 6 9 28 3 3 2 4 25 13 MEAN QFF PRESSURE IN HPA 1013.8 1012.3 1010.1 1006.5 1001.5 995.9 988.8 990.4 996.8 1007.2 1011.8 1016.5 1004.3 MAX. QFF PRESSURE IN HPA 1019.8 1022.0 1022.8 1015.1 1007.6 1002.8 992.0 997.0 1003.3 1015.1 1019.2 1022.1 1022.8 DAY 26 22 9 7 1 8 30 28 23 24 22 16 MIN. QFF PRESSURE IN HPA 1008.1 1005.1 1002.7 997.6 993.6 985.3 982.4 986.4 990.7 1001.7 1006.5 1011.5 982.4 DAY 22 25 22 6 31 28 3 3 2 4 13 9 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 883.6 880.2 881.6 881.7 878.5 876.2 871.7 872.2 876.2 883.1 883.7 886.1 879.6 MAX. QFE PRESSURE IN HPA 888.0 886.8 887.6 887.4 883.0 880.3 873.5 876.8 880.5 889.7 888.1 891.2 891.2 DAY 2 2 9 8 1 12 30 28 23 25 22 16 MIN. QFE PRESSURE IN HPA 877.4 875.4 876.2 872.7 872.8 868.1 866.7 869.5 872.0 879.1 879.0 882.1 866.7 DAY 22 28 26 6 31 28 3 3 2 6 25 11 MEAN QNH PRESSURE IN HPA 1013.9 1010.1 1011.6 1011.8 1008.2 1005.6 1000.6 1001.2 1005.7 1013.3 1014.1 1016.7 1009.4 MAX. QNH PRESSURE IN HPA 1018.8 1017.5 1018.4 1018.2 1013.2 1010.2 1002.6 1006.3 1010.5 1020.7 1019.0 1022.4 1022.4 DAY 2 2 9 8 1 12 30 28 23 25 22 16 MIN. QNH PRESSURE IN HPA 1007.0 1004.7 1005.6 1001.7 1001.8 996.6 995.0 998.1 1000.9 1008.9 1008.8 1012.2 995.0 DAY 22 28 26 6 31 28 3 3 2 6 25 11 MEAN QFF PRESSURE IN HPA 1015.0 1013.0 1010.8 1007.3 1002.4 996.7 989.8 991.7 998.7 1008.5 1012.8 1017.8 1005.4 MAX. QFF PRESSURE IN HPA 1022.2 1023.1 1021.7 1016.1 1008.7 1002.2 992.9 998.3 1004.5 1015.5 1018.8 1024.7 1024.7 DAY 2 22 9 7 10 7 30 28 22 25 22 16 MIN. QFF PRESSURE IN HPA 1009.3 1007.1 1003.5 999.0 993.7 986.3 983.3 988.2 991.8 1003.2 1007.3 1012.8 983.3 DAY 22 16 22 6 31 28 3 5 2 4 13 9 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 884.3 880.6 882.3 882.6 879.0 877.1 872.7 873.4 877.6 884.0 884.9 887.4 880.5 MAX. QFE PRESSURE IN HPA 888.5 887.6 888.4 889.0 882.9 881.0 874.4 878.2 882.3 890.3 889.0 892.7 892.7 DAY 2 2 10 7 1 12 30 28 25 25 9 16 MIN. QFE PRESSURE IN HPA 878.0 875.0 877.3 877.4 874.0 869.0 867.8 870.1 873.3 880.0 880.5 883.8 867.8 DAY 22 19 26 5 18 28 3 5 2 6 30 11 MEAN QNH PRESSURE IN HPA 1014.7 1010.6 1012.5 1012.8 1008.7 1006.6 1001.7 1002.5 1007.2 1014.4 1015.4 1018.1 1010.4 MAX. QNH PRESSURE IN HPA 1019.4 1018.4 1019.3 1020.0 1013.1 1011.0 1003.6 1007.9 1012.5 1021.4 1020.0 1024.1 1024.1 DAY 2 2 10 7 1 12 30 28 25 25 9 16 MIN. QNH PRESSURE IN HPA 1007.7 1004.3 1006.9 1007.0 1003.2 997.6 996.2 998.8 1002.4 1009.9 1010.5 1014.1 996.2 DAY 22 19 26 5 18 28 3 5 2 6 30 11 MEAN QFF PRESSURE IN HPA 1016.3 1013.5 1011.6 1007.8 1002.2 997.4 990.8 993.0 1000.3 1009.9 1014.5 1019.8 1006.4 MAX. QFF PRESSURE IN HPA 1023.0 1024.7 1021.4 1018.4 1007.4 1002.9 993.6 1000.6 1006.9 1017.1 1019.3 1027.2 1027.2 DAY 2 22 9 7 10 7 1 28 26 25 26 16 MIN. QFF PRESSURE IN HPA 1009.9 1006.7 1003.9 1002.9 995.9 987.5 985.2 988.8 993.7 1005.0 1009.0 1014.6 985.2 DAY 22 19 17 5 31 28 3 5 2 3 13 9 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 884.5 880.7 882.6 882.8 879.3 877.4 873.0 873.8 878.0 884.2 885.2 887.6 880.8 MAX. QFE PRESSURE IN HPA 888.7 887.6 888.8 889.3 882.8 881.6 874.8 878.3 882.6 890.2 889.4 893.0 893.0 DAY 2 2 10 7 1 12 7 28 25 25 9 16 MIN. QFE PRESSURE IN HPA 878.3 874.0 877.3 877.3 874.0 869.6 868.6 870.9 873.8 880.2 880.5 883.9 868.6 DAY 22 19 25 5 18 28 3 2 2 6 24 11 MEAN QNH PRESSURE IN HPA 1015.0 1010.7 1012.8 1013.1 1009.1 1007.0 1002.1 1002.9 1007.7 1014.6 1015.7 1018.3 1010.7 MAX. QNH PRESSURE IN HPA 1019.6 1018.4 1019.7 1020.3 1013.0 1011.7 1004.1 1008.0 1012.8 1021.3 1020.4 1024.4 1024.4 DAY 2 2 10 7 1 12 7 28 25 25 9 16 MIN. QNH PRESSURE IN HPA 1008.0 1003.2 1006.9 1006.9 1003.2 998.3 997.1 999.7 1003.0 1010.1 1010.5 1014.3 997.1 DAY 22 19 25 5 18 28 3 2 2 6 24 11 MEAN QFF PRESSURE IN HPA 1015.2 1012.6 1010.9 1007.0 1001.7 996.9 990.2 992.3 999.5 1008.8 1013.8 1018.7 1005.6 MAX. QFF PRESSURE IN HPA 1021.6 1022.8 1021.6 1017.9 1008.1 1002.1 993.2 999.1 1006.0 1016.7 1018.6 1025.8 1025.8 DAY 2 22 8 7 1 7 30 28 26 25 26 15 MIN. QFF PRESSURE IN HPA 1009.1 1003.7 1003.0 1001.6 995.9 987.1 985.0 988.4 993.0 1003.5 1007.6 1013.7 985.0 DAY 22 24 30 5 30 28 2 5 2 3 13 9 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 M MEANS AND EXTREMES FOR THE YEAR 1960 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.7 9.0 8.8 14.5 22.2 27.1 30.2 29.5 25.7 18.4 12.0 6.9 17.6 MINIMUN AIR TEMPERATURE (C) 1.6 3.1 3.6 9.2 13.2 16.9 21.2 18.9 15.8 8.6 6.8 1.9 10.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 3 16 6 2 0 0 0 27 DAYS WITH MINIMUM TEMP. <=-4 1 0 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH FREEZING MIN.<= 0 12 6 5 0 0 0 0 0 0 0 0 4 27 TEMPERATURE RECORDS LOWEST(C) -4.0 -2.0 -2.0 4.0 8.0 12.0 18.0 14.0 10.0 6.0 2.0 -1.0 -4.0 DAY 30 1 14 14 2 7 2 28 25 24 23 26 MAXIMUM AIR TEMPERATURE (C) 15.1 17.3 16.6 22.2 32.8 38.4 40.7 41.4 38.2 30.4 18.9 14.7 27.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 28 30 31 31 30 19 0 0 169 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 22.0 25.0 23.0 28.0 39.0 45.0 45.0 47.0 42.0 35.0 27.0 18.0 47.0 DAY 19 28 5 7 26 25 18 14 11 1 3 6 DIF. BETWEEN (MAX.-MIN.) (C) 13.5 14.2 13.0 13.0 19.6 21.5 19.5 22.5 22.4 21.8 12.1 12.8 17.1 MEAN DAILY TEMP. (MDT) (C) 8.4 10.2 10.1 15.7 23.0 27.6 30.9 30.1 27.0 19.5 12.9 8.3 18.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 74.5 199.5 308.0 283.0 180.0 9.0 0.0 0.0 1054.0 HEATING DEG. DAYS(BASE 18 0C) 299.0 227.0 243.5 78.5 1.5 0.0 0.0 0.0 0.0 6.5 155.0 300.5 1311.5 DEWPOINT (MEAN C) -0.8 -0.3 -0.7 5.3 5.6 5.1 5.7 5.7 3.8 0.5 4.3 0.5 2.9 MIXING RATIO (G/KG) 4.18 4.34 4.25 6.49 6.65 6.39 6.79 6.70 5.88 4.56 6.05 4.52 5.57 VAPOUR PRESSURE (HPA) 5.91 6.12 5.97 9.10 9.32 8.91 9.43 9.32 8.24 6.44 8.53 6.40 7.81 SATURATION DEF. (HPA) 4.48 6.13 6.02 8.18 19.78 30.15 36.35 35.50 27.89 16.67 6.21 3.92 16.77 RELATIVE HUMIDITY (MEAN %) 62 56 56 58 38 27 23 24 26 32 63 66 44 RELATIVE HUMIDITY (MAX. %) 79 75 74 79 59 42 35 36 38 45 80 82 60 RELATIVE HUMIDITY (MIN. %) 41 36 36 35 19 14 13 13 14 18 43 47 27 RELATIVE HUMIDITY (MEAN% 03UTC) 75 71 70 76 59 41 34 35 38 44 78 79 58 RELATIVE HUMIDITY (MEAN% 09UTC) 50 46 42 46 24 19 17 17 19 23 49 53 34 RELATIVE HUMIDITY (MEAN% 15UTC) 48 42 48 45 24 16 16 16 18 22 53 56 34 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 61.8 41.0 96.8 41.4 4.0 0.0 0.4 0.0 0.0 0.0 107.7 46.4 399.5 DAYS WITH PRECIPITATION >=10 2 1 4 0 0 0 0 0 0 0 6 2 15 DAYS WITH PRECIPITATION >= 5 4 3 7 3 0 0 0 0 0 0 6 2 25 DAYS WITH PRECIPITATION >= 1 5 6 12 15 2 0 0 0 0 0 7 2 49 DAYS WITH PRECIPITATION 6 6 13 16 5 0 1 0 0 0 10 3 60 GREATEST DAILY PRECIPITATION 26.0 20.0 26.0 7.0 2.0 0.0 0.4 0.0 0.0 0.0 36.0 28.0 36.0 DAY 27 5 24 9 8 ** 24 ** ** ** 6 20 DAY WITH THUNDER STORM 0 0 2 8 6 0 0 0 0 0 3 0 19 DAYS WITH SNOW OR SLEET 2 0 3 0 0 0 0 0 0 0 0 0 5 DAYS WITH DUST 0 1 0 0 2 0 4 0 0 1 0 0 8 WIND DIRECTION (PREVAILING) 360 360 315 315 315 315 360 315 315 315 315 315 315 PREVAILING WIND SPEED(KNOTS) 3.0 2.7 3.6 3.1 2.9 2.5 3.0 2.4 2.4 2.4 2.4 2.4 2.6 PREVAILING WIND PERCENT 28.6 27.6 29.8 27.5 33.9 31.3 29.4 29.0 35.4 31.9 46.3 33.9 31.2 CALMS PERCENT OF WIND 11.7 8.2 2.0 5.8 8.1 6.3 4.4 6.9 10.4 10.9 15.0 21.8 9.3 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 248 240 248 2928 VECTOR WIND DIRECTION (MEAN) 263 275 266 246 313 264 273 288 293 291 304 318 282 VECTOR WIND MAGNITUDE(KNOTS) 1.8 1.1 2.1 1.0 1.4 1.6 1.5 1.1 1.3 1.4 1.5 1.1 1.3 WIND STEADINESES (MEAN %) 41.9 28.2 42.0 21.7 45.2 47.1 38.5 37.9 48.1 48.3 60.0 52.4 38.2 WIND SPEED (MEAN KNOTS) 4.3 3.9 5.0 4.6 3.1 3.4 3.9 2.9 2.7 2.9 2.5 2.1 3.4 FASTEST WIND DIRECTION 230 230 230 330 330 230 230 230 330 90 210 230 230 FASTEST WIND SPEED (KNOTS) 37 30 30 25 12 15 15 15 12 30 15 10 37 DAY 7 3 2 10 7 17 2 2 2 25 3 18 DAYS WITH SKY CLEAR (0-2)/8 20 12 11 9 24 30 25 31 30 30 13 20 255 DAYS WITH P.CLOUDY (3-6)/8 4 11 11 10 6 0 6 0 0 1 10 8 67 DAYS WITH CLOUDY (7-8)/8 7 6 9 11 1 0 0 0 0 0 7 3 44 DAYS WITH VISIBILITY =< 2 KM 3 2 4 2 1 3 2 0 0 0 2 1 20 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 885.8 885.0 880.6 881.2 881.6 877.1 873.8 874.7 880.2 885.1 886.2 886.6 881.5 MAX. QFE PRESSURE IN HPA 891.1 890.4 887.7 889.3 887.9 883.9 878.7 880.6 884.9 890.6 890.8 892.2 892.2 DAY-HOUR 19- 6 2- 6 20- 6 7- 6 7-18 3- 3 17- 6 31- 6 26- 6 30- 6 26- 6 6- 6 MIN. QFE PRESSURE IN HPA 874.2 874.3 869.8 875.0 876.0 869.7 868.2 870.0 872.7 871.7 877.1 879.0 868.2 DAY-HOUR 7-12 29-12 11-12 10-12 30-15 29-15 8-15 11-15 3-12 7-18 19-15 20- 3 MEAN QNH PRESSURE IN HPA 1016.3 1015.5 1010.5 1011.2 1011.7 1006.6 1003.0 1003.9 1010.1 1015.6 1016.8 1017.3 1011.6 MAX. QNH PRESSURE IN HPA 1022.3 1021.5 1018.5 1020.3 1018.7 1014.3 1008.4 1010.6 1015.4 1021.7 1022.0 1023.5 1023.5 DAY-HOUR 19- 6 2- 6 20- 6 7- 6 7-18 3- 3 17- 6 31- 6 26- 6 30- 6 26- 6 6- 6 MIN. QNH PRESSURE IN HPA 1003.4 1003.5 998.5 1004.3 1005.4 998.4 996.7 998.7 1001.7 1000.6 1006.7 1008.8 996.7 DAY-HOUR 7-12 29-12 11-12 10-12 30-15 29-15 8-15 11-15 3-12 7-18 19-15 20- 3 MEAN QFF PRESSURE IN HPA 1016.6 1014.7 1009.6 1007.5 1004.5 997.2 992.2 993.4 1001.4 1010.3 1014.3 1017.4 1006.6 MAX. QFF PRESSURE IN HPA 1023.1 1023.6 1018.1 1017.3 1013.6 1006.4 998.7 1001.4 1008.8 1018.3 1021.2 1024.2 1024.2 DAY-HOUR 19- 6 2- 6 20- 6 7- 6 2- 3 2- 3 17- 6 31- 6 26- 6 31- 6 25- 6 6- 6 MIN. QFF PRESSURE IN HPA 1001.9 998.1 996.1 1000.3 996.5 987.4 985.2 986.6 989.9 994.7 1003.9 1008.9 985.2 DAY-HOUR 7-12 29-12 11-12 19- 0 30-15 29-12 8-12 12-12 3-12 7-18 19-12 29-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 886.0 885.3 880.8 881.3 882.0 877.6 874.3 875.1 880.6 885.6 886.5 887.0 881.8 MAX. QFE PRESSURE IN HPA 890.2 889.6 886.6 887.9 886.0 883.3 878.1 879.2 884.5 889.8 889.8 891.3 891.3 DAY 19 2 30 7 2 3 17 31 26 31 26 7 MIN. QFE PRESSURE IN HPA 877.1 878.7 869.8 876.7 878.3 871.7 870.7 873.0 875.3 881.8 880.2 879.5 869.8 DAY 7 29 12 19 21 30 8 1 4 8 19 20 MEAN QNH PRESSURE IN HPA 1016.6 1015.8 1010.8 1011.3 1012.1 1007.2 1003.5 1004.4 1010.5 1016.1 1017.1 1017.7 1011.9 MAX. QNH PRESSURE IN HPA 1021.3 1020.6 1017.3 1018.7 1016.6 1013.6 1007.8 1009.0 1014.9 1020.9 1020.9 1022.5 1022.5 DAY 19 2 30 7 2 3 17 31 26 31 26 7 MIN. QNH PRESSURE IN HPA 1006.7 1008.4 998.5 1006.2 1008.0 1000.6 999.5 1002.1 1004.6 1011.9 1010.1 1009.3 998.5 DAY 7 29 12 19 21 30 8 1 4 8 19 20 MEAN QFF PRESSURE IN HPA 1016.1 1014.5 1009.4 1007.1 1004.5 997.5 992.4 993.2 1001.1 1010.1 1014.2 1017.2 1006.4 MAX. QFF PRESSURE IN HPA 1020.7 1020.9 1016.5 1014.5 1012.2 1004.8 996.9 998.7 1006.2 1015.7 1018.8 1021.1 1021.1 DAY 29 2 30 7 2 3 17 30 26 31 30 6 MIN. QFF PRESSURE IN HPA 1004.5 1003.1 996.6 1000.3 997.9 989.8 987.5 990.1 993.5 1005.8 1007.6 1010.8 987.5 DAY 7 29 12 19 30 29 8 15 3 8 19 20 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 886.1 885.5 880.6 881.2 882.2 877.9 874.4 875.4 881.0 885.8 886.5 886.8 881.9 MAX. QFE PRESSURE IN HPA 890.5 890.3 886.8 888.2 886.5 883.9 878.3 879.9 884.4 890.0 889.7 891.1 891.1 DAY 19 15 30 7 2 3 17 31 26 31 26 6 MIN. QFE PRESSURE IN HPA 875.2 878.0 872.0 876.6 878.5 872.0 870.5 872.2 875.5 882.2 880.2 879.0 870.5 DAY 7 29 12 19 30 29 8 12 3 12 19 20 MEAN QNH PRESSURE IN HPA 1016.7 1016.0 1010.6 1011.2 1012.3 1007.6 1003.6 1004.7 1011.0 1016.4 1017.1 1017.5 1012.1 MAX. QNH PRESSURE IN HPA 1021.6 1021.4 1017.5 1019.1 1017.2 1014.3 1008.0 1009.8 1014.8 1021.1 1020.7 1022.3 1022.3 DAY 19 15 30 7 2 3 17 31 26 31 26 6 MIN. QNH PRESSURE IN HPA 1004.5 1007.7 1000.9 1006.1 1008.2 1000.9 999.3 1001.2 1004.9 1012.4 1010.1 1008.8 999.3 DAY 7 29 12 19 30 29 8 12 3 12 19 20 MEAN QFF PRESSURE IN HPA 1017.2 1015.4 1010.2 1007.9 1005.8 998.7 993.5 995.0 1003.1 1012.0 1015.1 1018.0 1007.7 MAX. QFF PRESSURE IN HPA 1022.2 1022.3 1017.5 1016.0 1013.6 1006.4 998.0 1001.4 1007.9 1017.1 1019.5 1022.6 1022.6 DAY 29 2 30 7 2 2 17 31 26 30 30 6 MIN. QFF PRESSURE IN HPA 1003.3 1003.3 999.2 1001.1 999.0 990.7 988.2 990.5 994.5 1007.6 1007.7 1010.2 988.2 DAY 7 22 2 19 30 29 8 12 3 7 19 20 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 886.8 886.2 881.5 882.1 882.8 878.2 874.7 875.6 881.4 886.5 887.4 888.0 882.6 MAX. QFE PRESSURE IN HPA 891.1 890.4 887.7 889.3 887.4 883.8 878.7 880.6 884.9 890.6 890.8 892.2 892.2 DAY 19 2 20 7 8 3 17 31 26 30 26 6 MIN. QFE PRESSURE IN HPA 876.4 878.7 873.0 876.8 878.8 872.0 870.6 872.2 876.0 882.7 880.2 881.1 870.6 DAY 7 29 12 10 30 29 8 12 4 12 19 20 MEAN QNH PRESSURE IN HPA 1017.5 1016.8 1011.6 1012.2 1013.0 1007.8 1004.0 1005.0 1011.4 1017.2 1018.1 1018.8 1012.8 MAX. QNH PRESSURE IN HPA 1022.3 1021.5 1018.5 1020.3 1018.2 1014.1 1008.4 1010.6 1015.4 1021.7 1022.0 1023.5 1023.5 DAY 19 2 20 7 8 3 17 31 26 30 26 6 MIN. QNH PRESSURE IN HPA 1005.9 1008.4 1002.1 1006.3 1008.6 1000.9 999.4 1001.2 1005.4 1012.9 1010.1 1011.1 999.4 DAY 7 29 12 10 30 29 8 12 4 12 19 20 MEAN QFF PRESSURE IN HPA 1018.7 1016.8 1011.1 1008.8 1006.2 999.0 993.6 995.3 1003.4 1012.9 1016.3 1019.9 1008.5 MAX. QFF PRESSURE IN HPA 1023.1 1023.6 1018.1 1017.3 1013.3 1006.2 998.7 1001.4 1008.8 1018.3 1021.2 1024.2 1024.2 DAY 19 2 20 7 2 2 17 31 26 31 25 6 MIN. QFF PRESSURE IN HPA 1004.9 1003.9 1000.7 1003.1 999.6 990.7 988.6 990.3 995.7 1007.2 1007.7 1012.4 988.6 DAY 7 29 2 19 30 29 8 12 4 7 19 20 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 886.2 885.7 881.0 881.7 882.1 877.4 874.0 874.9 880.6 885.4 886.6 887.0 881.9 MAX. QFE PRESSURE IN HPA 890.0 890.4 886.8 888.1 886.5 883.0 878.2 880.2 884.4 889.7 889.9 890.5 890.5 DAY 19 15 20 7 8 3 17 31 25 30 26 6 MIN. QFE PRESSURE IN HPA 875.5 877.3 873.4 876.5 878.3 871.4 869.8 871.4 875.4 881.3 880.6 881.4 869.8 DAY 7 29 11 10 30 29 8 12 3 12 19 20 MEAN QNH PRESSURE IN HPA 1016.9 1016.3 1011.0 1011.8 1012.2 1007.0 1003.2 1004.2 1010.6 1015.9 1017.3 1017.8 1012.0 MAX. QNH PRESSURE IN HPA 1021.1 1021.5 1017.5 1019.0 1017.2 1013.2 1007.9 1010.1 1014.8 1020.7 1021.0 1021.6 1021.6 DAY 19 15 20 7 8 3 17 31 25 30 26 6 MIN. QNH PRESSURE IN HPA 1004.9 1006.9 1002.5 1006.0 1008.0 1000.3 998.5 1000.3 1004.7 1011.3 1010.6 1011.5 998.5 DAY 7 29 11 10 30 29 8 12 3 12 19 20 MEAN QFF PRESSURE IN HPA 1016.8 1015.1 1009.7 1007.7 1004.5 996.9 991.6 992.9 1000.8 1009.5 1014.2 1017.5 1006.4 MAX. QFF PRESSURE IN HPA 1021.5 1022.0 1016.5 1014.7 1012.1 1004.3 996.8 999.7 1006.7 1015.6 1019.8 1021.4 1022.0 DAY 29 6 20 7 2 2 17 31 25 31 30 27 MIN. QFF PRESSURE IN HPA 1004.0 1003.0 1000.0 1001.6 998.7 989.0 986.7 988.6 993.3 1003.3 1007.8 1011.4 986.7 DAY 7 29 11 19 30 28 8 12 3 7 19 29 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 884.6 883.7 879.6 880.2 880.7 876.1 872.9 873.6 879.0 883.7 884.8 885.3 880.3 MAX. QFE PRESSURE IN HPA 888.1 888.8 885.5 886.4 884.9 881.4 876.5 878.7 882.0 888.0 888.0 888.8 888.8 DAY 15 15 29 7 2 3 17 31 25 30 6 5 MIN. QFE PRESSURE IN HPA 874.2 874.3 869.8 875.0 876.8 869.9 868.3 870.1 872.7 879.4 877.3 879.5 868.3 DAY 7 29 11 10 30 29 8 12 3 12 19 29 MEAN QNH PRESSURE IN HPA 1015.0 1014.0 1009.5 1010.2 1010.6 1005.5 1001.9 1002.7 1008.8 1014.0 1015.2 1015.8 1010.3 MAX. QNH PRESSURE IN HPA 1019.0 1019.7 1016.0 1017.0 1015.4 1011.5 1006.0 1008.4 1012.1 1018.8 1018.8 1019.7 1019.7 DAY 15 15 29 7 2 3 17 31 25 30 6 5 MIN. QNH PRESSURE IN HPA 1003.4 1003.5 998.5 1004.3 1006.3 998.6 996.8 998.8 1001.7 1009.2 1006.9 1009.3 996.8 DAY 7 29 11 10 30 29 8 12 3 12 19 29 MEAN QFF PRESSURE IN HPA 1014.4 1012.5 1008.1 1006.0 1002.9 995.7 990.7 991.3 999.2 1007.9 1012.3 1015.2 1004.7 MAX. QFF PRESSURE IN HPA 1018.7 1019.3 1015.5 1012.0 1010.3 1002.1 995.9 998.2 1003.6 1013.3 1017.4 1018.6 1019.3 DAY 29 15 29 7 1 3 23 31 25 30 25 5 MIN. QFF PRESSURE IN HPA 1001.9 998.1 996.1 1000.4 996.8 987.4 985.2 986.6 989.9 1002.3 1003.9 1008.9 985.2 DAY 7 29 11 18 30 29 8 12 3 7 19 29 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 884.9 883.9 879.7 880.4 880.3 875.6 872.5 873.3 878.8 883.8 885.0 885.3 880.3 MAX. QFE PRESSURE IN HPA 888.6 888.8 885.2 886.4 886.6 880.8 875.9 878.1 881.8 888.0 888.5 889.1 889.1 DAY 18 15 29 7 7 3 16 31 19 30 25 5 MIN. QFE PRESSURE IN HPA 875.4 874.8 871.1 875.4 876.0 869.7 868.2 870.0 873.4 879.6 877.1 880.1 868.2 DAY 7 29 11 10 30 29 8 11 3 12 19 19 MEAN QNH PRESSURE IN HPA 1015.4 1014.3 1009.6 1010.3 1010.2 1004.9 1001.5 1002.5 1008.5 1014.1 1015.5 1015.8 1010.2 MAX. QNH PRESSURE IN HPA 1019.5 1019.7 1015.7 1017.0 1017.3 1010.8 1005.3 1007.8 1011.9 1018.8 1019.4 1020.1 1020.1 DAY 18 15 29 7 7 3 16 31 19 30 25 5 MIN. QNH PRESSURE IN HPA 1004.7 1004.1 999.9 1004.7 1005.4 998.4 996.7 998.7 1002.5 1009.4 1006.7 1010.0 996.7 DAY 7 29 11 10 30 29 8 11 3 12 19 19 MEAN QFF PRESSURE IN HPA 1015.8 1013.6 1009.1 1007.0 1003.5 996.0 991.3 992.6 1000.6 1009.6 1013.4 1016.2 1005.7 MAX. QFF PRESSURE IN HPA 1019.8 1020.4 1015.8 1013.3 1011.7 1002.2 995.4 999.2 1005.9 1014.7 1018.6 1020.1 1020.4 DAY 15 1 29 6 7 3 16 31 25 30 25 5 MIN. QFF PRESSURE IN HPA 1004.3 999.9 998.6 1000.7 996.5 988.2 986.6 987.8 992.1 1004.0 1004.8 1009.9 986.6 DAY 7 29 11 18 30 29 8 1 3 7 19 29 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 885.9 885.0 880.7 881.4 881.4 876.5 873.7 874.5 880.0 884.8 886.2 886.5 881.4 MAX. QFE PRESSURE IN HPA 890.1 889.6 886.7 888.1 887.9 882.0 877.4 878.3 883.5 889.3 889.4 890.4 890.4 DAY 18 15 29 7 7 3 16 30 25 30 5 5 MIN. QFE PRESSURE IN HPA 877.8 876.1 871.8 876.5 876.9 871.2 869.9 871.3 874.4 871.7 878.6 879.6 869.9 DAY 7 29 11 18 20 29 8 11 3 7 19 19 MEAN QNH PRESSURE IN HPA 1016.5 1015.4 1010.7 1011.4 1011.4 1006.0 1002.9 1003.7 1009.9 1015.2 1016.8 1017.2 1011.4 MAX. QNH PRESSURE IN HPA 1021.2 1020.6 1017.4 1019.0 1018.7 1012.1 1007.0 1008.0 1013.8 1020.3 1020.4 1021.5 1021.5 DAY 18 15 29 7 7 3 16 30 25 30 5 5 MIN. QNH PRESSURE IN HPA 1007.4 1005.5 1000.7 1006.0 1006.4 1000.1 998.6 1000.2 1003.6 1000.6 1008.3 1009.4 998.6 DAY 7 29 11 18 20 29 8 11 3 7 19 19 MEAN QFF PRESSURE IN HPA 1017.6 1015.3 1010.2 1008.0 1004.6 997.1 992.5 994.0 1002.0 1010.8 1015.0 1018.2 1007.1 MAX. QFF PRESSURE IN HPA 1021.9 1022.7 1016.8 1015.8 1012.6 1003.7 997.4 999.6 1008.0 1017.1 1019.6 1022.3 1022.7 DAY 18 1 29 6 7 2 16 29 25 30 30 26 MIN. QFF PRESSURE IN HPA 1007.5 1001.0 999.3 1001.3 999.7 989.7 988.3 989.4 993.8 994.7 1007.4 1010.5 988.3 DAY 7 29 11 18 29 28 8 1 3 7 19 19 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 885.7 885.0 880.7 881.4 882.0 877.4 874.3 875.1 880.6 885.6 886.6 887.0 881.8 MAX. QFE PRESSURE IN HPA 890.4 889.8 886.8 887.8 886.1 882.6 878.2 879.1 884.5 889.6 890.0 891.2 891.2 DAY 18 15 29 6 7 2 16 31 25 30 25 5 MIN. QFE PRESSURE IN HPA 877.7 877.1 870.3 876.8 877.5 871.5 870.4 872.8 875.3 881.1 879.9 880.0 870.3 DAY 31 29 11 18 20 29 8 10 3 7 19 19 MEAN QNH PRESSURE IN HPA 1016.3 1015.5 1010.7 1011.4 1012.1 1007.0 1003.6 1004.4 1010.6 1016.1 1017.3 1017.7 1011.9 MAX. QNH PRESSURE IN HPA 1021.5 1020.9 1017.5 1018.6 1016.7 1012.8 1007.9 1008.9 1014.9 1020.6 1021.1 1022.4 1022.4 DAY 18 15 29 6 7 2 16 31 25 30 25 5 MIN. QNH PRESSURE IN HPA 1007.3 1006.7 999.0 1006.3 1007.1 1000.4 999.2 1001.8 1004.6 1011.1 1009.8 1009.9 999.0 DAY 31 29 11 18 20 29 8 10 3 7 19 19 MEAN QFF PRESSURE IN HPA 1016.3 1014.3 1009.3 1007.4 1004.4 997.0 992.1 993.3 1001.0 1009.9 1014.4 1017.5 1006.4 MAX. QFF PRESSURE IN HPA 1020.7 1021.2 1016.2 1015.4 1011.8 1004.0 997.1 999.0 1006.9 1015.4 1019.4 1022.3 1022.3 DAY 28 1 29 6 1 1 16 29 25 30 30 5 MIN. QFF PRESSURE IN HPA 1007.0 1002.8 997.0 1000.6 999.5 988.9 987.9 989.9 993.5 1004.0 1008.0 1011.2 987.9 DAY 6 29 11 18 20 29 8 1 3 7 18 19 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 M MEANS AND EXTREMES FOR THE YEAR 1961 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.6 6.3 9.1 13.9 21.9 27.6 31.9 31.3 25.3 21.4 13.2 9.5 18.0 MINIMUN AIR TEMPERATURE (C) 0.9 1.8 3.1 8.1 13.2 18.3 22.1 21.2 14.8 11.6 6.6 4.1 10.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 7 27 20 0 0 0 0 54 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 17 9 4 0 0 0 0 0 0 0 5 3 38 TEMPERATURE RECORDS LOWEST(C) -3.0 -2.0 -2.0 4.0 8.0 12.0 20.0 17.0 12.0 10.0 -3.0 -2.0 -3.0 DAY 25 1 10 2 31 1 10 30 24 29 26 1 MAXIMUM AIR TEMPERATURE (C) 11.0 13.5 16.8 21.5 32.2 38.3 42.8 42.2 37.1 31.8 20.3 15.5 26.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 2 24 30 31 31 30 29 0 0 177 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 17.0 18.0 24.0 31.0 37.0 43.0 47.0 46.0 42.0 37.0 29.0 19.0 47.0 DAY 1 7 25 27 23 22 23 11 8 1 1 3 DIF. BETWEEN (MAX.-MIN.) (C) 10.1 11.7 13.7 13.4 19.0 20.0 20.7 21.0 22.3 20.2 13.7 11.4 16.4 MEAN DAILY TEMP. (MDT) (C) 6.0 7.6 10.0 14.8 22.7 28.3 32.4 31.7 25.9 21.7 13.4 9.8 18.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.5 64.0 218.0 354.5 331.0 148.5 28.0 0.0 0.0 1144.5 HEATING DEG. DAYS(BASE 18 0C) 373.0 290.0 249.0 105.5 1.5 0.0 0.0 0.0 0.0 0.0 141.5 254.5 1415.0 DEWPOINT (MEAN C) -0.8 -0.6 -1.1 5.5 5.7 5.1 8.9 10.3 6.3 4.2 2.5 1.3 3.9 MIXING RATIO (G/KG) 4.23 4.21 4.17 6.61 6.68 6.35 8.39 9.13 6.91 5.93 5.41 4.93 6.08 VAPOUR PRESSURE (HPA) 5.97 5.94 5.87 9.27 9.35 8.87 11.60 12.66 9.66 8.37 7.64 6.96 8.51 SATURATION DEF. (HPA) 2.76 3.97 6.31 7.55 18.88 30.98 38.58 35.99 25.32 19.04 8.45 5.33 16.93 RELATIVE HUMIDITY (MEAN %) 70 64 53 61 39 26 26 29 31 34 51 59 45 RELATIVE HUMIDITY (MAX. %) 86 85 77 84 61 40 38 40 46 47 65 73 62 RELATIVE HUMIDITY (MIN. %) 52 46 33 38 20 14 16 18 19 23 36 43 30 RELATIVE HUMIDITY (MEAN% 03UTC) 80 78 74 78 59 39 37 38 44 46 60 68 58 RELATIVE HUMIDITY (MEAN% 09UTC) 61 56 43 47 28 17 20 20 21 24 39 45 35 RELATIVE HUMIDITY (MEAN% 15UTC) 61 51 38 46 24 16 18 23 24 26 47 59 36 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 144.0 55.0 55.0 107.0 10.0 0.0 0.0 0.0 0.0 0.0 26.9 59.5 457.4 DAYS WITH PRECIPITATION >=10 5 2 1 4 1 0 0 0 0 0 1 2 16 DAYS WITH PRECIPITATION >= 5 10 6 4 7 1 0 0 0 0 0 2 5 35 DAYS WITH PRECIPITATION >= 1 12 9 10 15 1 0 0 0 0 0 5 9 61 DAYS WITH PRECIPITATION 12 9 10 15 1 0 0 0 0 0 7 11 65 GREATEST DAILY PRECIPITATION 29.0 12.0 23.0 24.0 10.0 0.0 0.0 0.0 0.0 0.0 14.0 17.0 29.0 DAY 11 2 12 30 30 ** ** ** ** ** 6 14 DAY WITH THUNDER STORM 2 1 2 4 2 0 0 0 0 0 0 8 19 DAYS WITH SNOW OR SLEET 1 1 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH DUST 1 0 9 1 5 5 0 0 0 1 0 1 23 WIND DIRECTION (PREVAILING) 315 315 225 315 360 315 315 270 270 270 270 270 315 PREVAILING WIND SPEED(KNOTS) 3.1 3.2 9.3 2.9 2.3 3.4 4.0 7.0 8.1 9.5 11.3 11.4 4.6 PREVAILING WIND PERCENT 37.9 36.2 29.0 30.4 32.3 36.3 24.2 13.7 16.7 16.5 14.6 14.1 23.9 CALMS PERCENT OF WIND 19.4 11.6 7.3 12.5 9.3 7.9 27.4 45.2 47.5 44.8 41.3 38.3 26.1 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 315 319 243 291 296 328 283 264 277 280 258 241 277 VECTOR WIND MAGNITUDE(KNOTS) 1.6 1.1 2.6 1.3 1.3 1.9 0.9 1.3 2.5 2.7 2.9 2.6 1.7 WIND STEADINESES (MEAN %) 48.5 32.4 52.0 41.9 39.4 50.0 25.0 31.7 58.1 56.3 48.3 40.6 40.5 WIND SPEED (MEAN KNOTS) 3.3 3.4 5.0 3.1 3.3 3.8 3.6 4.1 4.3 4.8 6.0 6.4 4.2 FASTEST WIND DIRECTION 230 130 230 230 230 50 330 340 270 230 150 150 230 FASTEST WIND SPEED (KNOTS) 25 20 25 15 15 20 12 15 17 16 18 18 25 DAY 20 24 16 13 27 23 17 16 9 12 23 4 DAYS WITH SKY CLEAR (0-2)/8 12 13 11 7 26 30 29 31 29 28 12 14 242 DAYS WITH P.CLOUDY (3-6)/8 8 7 16 14 5 0 2 0 1 3 14 10 80 DAYS WITH CLOUDY (7-8)/8 11 8 4 9 0 0 0 0 0 0 4 7 43 DAYS WITH VISIBILITY =< 2 KM 11 2 0 1 2 1 0 0 0 0 0 0 17 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 884.9 883.3 882.1 881.6 880.3 877.8 872.7 875.8 879.5 886.9 887.7 886.5 881.6 MAX. QFE PRESSURE IN HPA 890.6 889.9 891.0 888.6 885.8 885.6 878.1 880.2 884.3 893.0 893.8 893.0 893.8 DAY-HOUR 25- 6 22- 6 4- 6 26- 6 1- 9 11- 3 24- 9 26- 6 25- 6 24- 6 2- 6 30- 6 MIN. QFE PRESSURE IN HPA 876.1 872.2 869.6 873.5 873.8 869.9 868.5 871.0 875.3 879.7 878.0 876.0 868.5 DAY-HOUR 20-21 2-12 12-15 8-12 30- 6 30-15 10-15 6-15 3-15 1-15 22-15 13-21 MEAN QNH PRESSURE IN HPA 1015.4 1013.5 1012.2 1011.7 1010.3 1007.4 1001.7 1005.1 1009.4 1017.6 1018.5 1017.1 1011.7 MAX. QNH PRESSURE IN HPA 1021.7 1021.0 1022.2 1019.5 1016.4 1016.2 1007.8 1010.1 1014.7 1024.4 1025.3 1024.4 1025.3 DAY-HOUR 25- 6 22- 6 4- 6 26- 6 1- 9 11- 3 24- 9 26- 6 25- 6 24- 6 2- 6 30- 6 MIN. QNH PRESSURE IN HPA 1005.5 1001.2 998.3 1002.6 1003.0 998.6 997.0 999.8 1004.6 1009.6 1007.7 1005.4 997.0 DAY-HOUR 20-21 2-12 12-15 8-12 30- 6 30-15 10-15 6-15 3-15 1-15 22-15 13-21 MEAN QFF PRESSURE IN HPA 1016.7 1013.9 1011.2 1008.2 1003.2 997.8 990.1 993.7 1000.7 1010.8 1015.6 1016.0 1006.5 MAX. QFF PRESSURE IN HPA 1025.2 1022.3 1023.5 1014.6 1012.6 1007.4 995.7 999.6 1007.5 1019.2 1026.8 1025.2 1026.8 DAY-HOUR 25- 6 22- 6 3- 6 26- 6 1- 3 11- 3 24- 6 30- 6 25- 6 24- 6 29- 6 30- 6 MIN. QFF PRESSURE IN HPA 1003.8 1002.2 997.0 1000.3 997.0 987.7 985.2 987.9 995.4 1000.7 1003.0 1002.7 985.2 DAY-HOUR 20-21 2-12 12-15 8-12 30- 6 30-15 17-12 1-12 3-12 1-12 22-12 22-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 885.2 883.4 882.4 881.8 880.6 878.2 873.0 875.7 879.6 886.8 887.6 886.5 881.7 MAX. QFE PRESSURE IN HPA 889.7 888.8 889.9 887.3 885.3 885.0 877.0 878.1 883.8 891.5 892.9 891.8 892.9 DAY 25 22 4 26 2 11 25 26 25 25 30 3 MIN. QFE PRESSURE IN HPA 877.2 878.0 871.7 874.7 874.4 873.8 870.4 871.7 876.8 880.4 880.0 877.2 870.4 DAY 21 2 13 8 30 30 17 7 2 3 23 22 MEAN QNH PRESSURE IN HPA 1015.7 1013.7 1012.5 1011.9 1010.5 1007.9 1002.0 1005.1 1009.5 1017.5 1018.4 1017.2 1011.8 MAX. QNH PRESSURE IN HPA 1020.7 1019.7 1021.0 1018.1 1015.8 1015.5 1006.5 1007.8 1014.1 1022.8 1024.3 1023.1 1024.3 DAY 25 22 4 26 2 11 25 26 25 25 30 3 MIN. QNH PRESSURE IN HPA 1006.8 1007.7 1000.6 1004.0 1003.6 1003.0 999.2 1000.6 1006.3 1010.3 1009.9 1006.8 999.2 DAY 21 2 13 8 30 30 17 7 2 3 23 22 MEAN QFF PRESSURE IN HPA 1016.4 1013.7 1011.1 1008.0 1003.0 998.1 989.9 993.1 1000.2 1010.2 1015.1 1015.6 1006.2 MAX. QFF PRESSURE IN HPA 1022.8 1019.6 1020.6 1012.3 1010.0 1006.1 992.9 996.9 1005.8 1016.4 1024.0 1022.6 1024.0 DAY 25 22 4 11 2 11 25 31 25 25 30 30 MIN. QFF PRESSURE IN HPA 1005.0 1007.8 1000.5 1001.4 997.3 991.2 986.9 988.6 995.8 1002.1 1004.6 1003.5 986.9 DAY 21 2 13 8 28 30 17 1 1 2 23 22 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 884.9 883.4 882.5 881.8 880.7 878.6 873.3 876.2 879.9 887.1 887.8 886.6 881.9 MAX. QFE PRESSURE IN HPA 889.6 889.0 889.8 887.5 885.2 885.6 877.2 878.6 883.8 891.8 892.7 891.8 892.7 DAY 25 22 4 26 2 11 25 25 25 25 30 1 MIN. QFE PRESSURE IN HPA 877.1 877.0 872.9 873.7 874.0 873.6 870.2 872.0 877.0 880.7 879.8 877.3 870.2 DAY 21 2 13 8 30 30 17 1 4 3 22 22 MEAN QNH PRESSURE IN HPA 1015.4 1013.7 1012.7 1011.9 1010.7 1008.3 1002.4 1005.6 1009.8 1017.8 1018.6 1017.2 1012.0 MAX. QNH PRESSURE IN HPA 1020.6 1020.0 1020.9 1018.3 1015.7 1016.2 1006.8 1008.3 1014.1 1023.1 1024.1 1023.1 1024.1 DAY 25 22 4 26 2 11 25 25 25 25 30 1 MIN. QNH PRESSURE IN HPA 1006.7 1006.5 1002.0 1002.9 1003.2 1002.7 998.9 1000.9 1006.5 1010.7 1009.7 1006.9 998.9 DAY 21 2 13 8 30 30 17 1 4 3 22 22 MEAN QFF PRESSURE IN HPA 1016.8 1014.2 1012.1 1008.8 1004.2 999.3 991.5 995.0 1002.0 1011.9 1016.5 1016.9 1007.4 MAX. QFF PRESSURE IN HPA 1023.5 1020.6 1021.3 1013.4 1012.6 1007.4 995.2 998.9 1006.9 1017.9 1025.6 1024.7 1025.6 DAY 25 22 3 26 1 11 24 30 25 25 30 1 MIN. QFF PRESSURE IN HPA 1005.0 1007.1 1001.7 1001.1 997.7 991.9 987.8 990.0 997.8 1003.8 1005.6 1004.7 987.8 DAY 21 2 13 8 30 30 17 1 1 2 23 22 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 886.0 884.6 883.6 882.6 881.4 879.0 873.8 877.0 880.5 888.0 888.7 887.4 882.7 MAX. QFE PRESSURE IN HPA 890.6 889.9 891.0 888.6 885.7 884.3 877.8 880.2 884.3 893.0 893.8 893.0 893.8 DAY 25 22 4 26 1 11 24 26 25 24 2 30 MIN. QFE PRESSURE IN HPA 878.9 875.5 875.0 874.2 873.8 873.8 870.8 872.6 877.3 881.7 879.5 877.8 870.8 DAY 21 2 13 8 30 30 17 7 4 2 22 22 MEAN QNH PRESSURE IN HPA 1016.6 1015.1 1013.9 1012.8 1011.5 1008.7 1002.9 1006.6 1010.4 1018.8 1019.6 1018.1 1012.9 MAX. QNH PRESSURE IN HPA 1021.7 1021.0 1022.2 1019.5 1016.3 1014.7 1007.4 1010.1 1014.7 1024.4 1025.3 1024.4 1025.3 DAY 25 22 4 26 1 11 24 26 25 24 2 30 MIN. QNH PRESSURE IN HPA 1008.7 1004.9 1004.3 1003.4 1003.0 1003.0 999.6 1001.6 1006.9 1011.8 1009.3 1007.4 999.6 DAY 21 2 13 8 30 30 17 7 4 2 22 22 MEAN QFF PRESSURE IN HPA 1018.5 1016.2 1013.5 1009.8 1004.8 999.7 991.8 995.8 1002.3 1012.7 1017.2 1017.4 1008.3 MAX. QFF PRESSURE IN HPA 1025.2 1022.3 1023.5 1014.6 1012.5 1005.7 995.7 999.6 1007.5 1019.2 1026.8 1025.2 1026.8 DAY 25 22 3 26 1 11 24 30 25 24 29 30 MIN. QFF PRESSURE IN HPA 1007.1 1006.7 1003.8 1001.3 997.0 992.6 988.5 990.1 998.8 1004.1 1005.6 1005.3 988.5 DAY 21 2 13 8 30 30 17 1 1 1 22 22 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 885.7 884.2 882.8 882.2 880.9 878.2 873.1 876.7 880.0 887.4 888.2 887.1 882.2 MAX. QFE PRESSURE IN HPA 889.7 889.4 890.4 887.8 885.8 882.9 878.1 879.8 884.0 892.3 893.4 892.3 893.4 DAY 25 22 3 26 1 11 24 26 25 23 30 1 MIN. QFE PRESSURE IN HPA 878.9 874.7 875.2 874.0 874.6 873.3 870.1 872.3 877.1 881.2 879.5 877.7 870.1 DAY 21 2 13 8 30 30 17 1 4 2 22 22 MEAN QNH PRESSURE IN HPA 1016.3 1014.6 1013.1 1012.3 1011.0 1007.8 1002.2 1006.2 1009.9 1018.2 1019.1 1017.9 1012.4 MAX. QNH PRESSURE IN HPA 1020.7 1020.4 1021.5 1018.6 1016.4 1013.1 1007.8 1009.7 1014.4 1023.6 1024.9 1023.6 1024.9 DAY 25 22 3 26 1 11 24 26 25 23 30 1 MIN. QNH PRESSURE IN HPA 1008.7 1004.0 1004.5 1003.2 1003.9 1002.4 998.8 1001.3 1006.7 1011.2 1009.3 1007.3 998.8 DAY 21 2 13 8 30 30 17 1 4 2 22 22 MEAN QFF PRESSURE IN HPA 1017.3 1014.8 1011.5 1008.4 1003.3 997.6 989.9 994.2 1000.6 1010.6 1015.3 1016.0 1006.6 MAX. QFF PRESSURE IN HPA 1022.5 1020.1 1021.5 1012.7 1011.4 1003.7 994.8 999.0 1005.5 1016.5 1024.0 1022.9 1024.0 DAY 25 22 3 18 1 11 24 30 25 24 29 30 MIN. QFF PRESSURE IN HPA 1006.4 1007.1 1003.5 1000.7 998.7 990.7 986.3 989.1 996.8 1002.8 1004.5 1003.9 986.3 DAY 21 2 30 8 30 30 17 1 1 2 22 22 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 883.8 882.0 880.8 880.7 879.4 876.9 871.9 875.3 878.8 886.1 886.9 885.8 880.7 MAX. QFE PRESSURE IN HPA 886.9 886.9 888.5 886.0 884.0 881.8 876.0 878.3 882.6 890.8 892.0 890.9 892.0 DAY 7 22 3 26 1 10 24 26 25 24 29 1 MIN. QFE PRESSURE IN HPA 877.3 872.2 871.5 873.5 874.8 872.7 868.7 871.2 875.8 880.0 878.3 876.8 868.7 DAY 21 2 12 8 29 30 10 1 3 2 22 22 MEAN QNH PRESSURE IN HPA 1014.1 1012.2 1010.8 1010.7 1009.2 1006.4 1000.8 1004.6 1008.5 1016.7 1017.7 1016.3 1010.7 MAX. QNH PRESSURE IN HPA 1017.6 1017.6 1019.4 1016.6 1014.4 1011.9 1005.4 1008.0 1012.8 1022.0 1023.3 1022.1 1023.3 DAY 7 22 3 26 1 10 24 26 25 24 29 1 MIN. QNH PRESSURE IN HPA 1006.9 1001.2 1000.4 1002.6 1004.1 1001.7 997.3 1000.1 1005.2 1009.9 1008.0 1006.3 997.3 DAY 21 2 12 8 29 30 10 1 3 2 22 22 MEAN QFF PRESSURE IN HPA 1014.9 1012.0 1009.3 1006.8 1001.7 996.4 988.6 992.4 999.0 1009.3 1014.3 1014.7 1004.9 MAX. QFF PRESSURE IN HPA 1019.4 1017.5 1018.6 1011.2 1008.6 1002.7 992.0 996.7 1004.1 1015.7 1022.7 1021.3 1022.7 DAY 24 22 3 11 1 10 24 30 24 24 29 1 MIN. QFF PRESSURE IN HPA 1004.7 1002.2 999.0 1000.3 997.8 989.9 985.2 987.9 995.4 1000.7 1003.0 1002.7 985.2 DAY 21 2 12 8 29 30 17 1 3 1 22 22 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 884.0 881.9 880.6 880.4 879.0 876.2 871.2 874.5 878.5 885.9 887.0 885.8 880.4 MAX. QFE PRESSURE IN HPA 887.4 886.7 888.7 885.0 883.5 882.9 875.0 877.2 882.2 890.5 891.8 891.6 891.8 DAY 24 21 3 25 1 10 24 24 25 24 29 4 MIN. QFE PRESSURE IN HPA 878.3 873.2 869.6 874.2 874.7 869.9 868.5 871.0 875.3 879.7 878.0 877.3 868.5 DAY 20 2 12 8 29 30 10 6 3 1 22 22 MEAN QNH PRESSURE IN HPA 1014.4 1012.0 1010.6 1010.3 1008.8 1005.6 1000.0 1003.8 1008.2 1016.5 1017.7 1016.4 1010.4 MAX. QNH PRESSURE IN HPA 1018.2 1017.4 1019.6 1015.5 1013.8 1013.1 1004.3 1006.8 1012.4 1021.6 1023.1 1022.9 1023.1 DAY 24 21 3 25 1 10 24 24 25 24 29 4 MIN. QNH PRESSURE IN HPA 1008.0 1002.3 998.3 1003.4 1004.0 998.6 997.0 999.8 1004.6 1009.6 1007.7 1006.9 997.0 DAY 20 2 12 8 29 30 10 6 3 1 22 22 MEAN QFF PRESSURE IN HPA 1015.7 1012.4 1010.0 1007.2 1002.2 996.5 989.0 992.9 1000.2 1010.5 1015.5 1016.0 1005.7 MAX. QFF PRESSURE IN HPA 1021.0 1017.7 1019.8 1011.1 1008.9 1004.5 991.9 996.9 1005.0 1016.6 1024.2 1023.1 1024.2 DAY 24 22 3 20 1 10 24 30 24 24 29 1 MIN. QFF PRESSURE IN HPA 1006.7 1004.0 997.0 1001.3 998.0 987.7 986.7 989.1 995.9 1002.4 1003.6 1004.9 986.7 DAY 20 2 12 8 22 30 16 6 1 1 22 22 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 884.9 883.0 881.8 881.6 880.1 877.4 872.2 874.9 879.2 886.6 887.5 886.3 881.3 MAX. QFE PRESSURE IN HPA 888.9 888.4 889.5 886.7 884.9 884.0 877.0 877.6 882.9 891.0 892.3 892.3 892.3 DAY 24 21 3 25 1 10 24 31 24 24 29 4 MIN. QFE PRESSURE IN HPA 878.2 877.2 869.9 876.4 875.8 871.5 870.0 871.3 876.0 880.2 879.0 876.8 869.9 DAY 20 2 12 8 29 30 16 6 1 1 22 13 MEAN QNH PRESSURE IN HPA 1015.4 1013.3 1011.9 1011.7 1010.0 1007.0 1001.2 1004.2 1009.0 1017.3 1018.3 1017.0 1011.4 MAX. QNH PRESSURE IN HPA 1019.8 1019.3 1020.5 1017.4 1015.4 1014.4 1006.5 1007.2 1013.1 1022.2 1023.6 1023.6 1023.6 DAY 24 21 3 25 1 10 24 31 24 24 29 4 MIN. QNH PRESSURE IN HPA 1007.9 1006.8 998.6 1005.9 1005.2 1000.4 998.7 1000.2 1005.4 1010.1 1008.8 1006.3 998.6 DAY 20 2 12 8 29 30 16 6 1 1 22 13 MEAN QFF PRESSURE IN HPA 1017.3 1014.3 1011.5 1008.7 1003.4 997.9 990.1 993.3 1000.8 1011.1 1016.0 1016.2 1006.7 MAX. QFF PRESSURE IN HPA 1023.4 1020.0 1022.2 1013.3 1011.1 1005.3 994.2 997.9 1005.9 1017.2 1024.6 1023.3 1024.6 DAY 24 21 3 17 1 10 24 31 24 24 30 1 MIN. QFF PRESSURE IN HPA 1006.4 1008.5 997.5 1003.6 998.1 989.8 987.0 989.5 996.2 1002.8 1004.4 1005.0 987.0 DAY 20 8 12 29 27 30 30 6 1 2 22 13 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 885.1 883.5 882.2 882.1 880.6 878.0 873.0 875.8 879.8 887.2 887.8 886.5 881.8 MAX. QFE PRESSURE IN HPA 889.8 888.9 890.1 887.2 885.6 884.0 877.2 878.0 883.7 891.5 893.0 892.0 893.0 DAY 24 21 3 25 1 10 24 24 24 24 29 2 MIN. QFE PRESSURE IN HPA 876.1 877.8 870.8 877.0 876.2 872.0 870.4 871.7 876.7 880.5 880.0 876.0 870.4 DAY 20 2 12 8 29 30 16 6 16 2 22 13 MEAN QNH PRESSURE IN HPA 1015.6 1013.9 1012.3 1012.3 1010.6 1007.6 1002.1 1005.2 1009.6 1017.9 1018.6 1017.1 1011.9 MAX. QNH PRESSURE IN HPA 1020.9 1019.8 1021.2 1017.9 1016.2 1014.4 1006.8 1007.7 1014.0 1022.8 1024.4 1023.3 1024.4 DAY 24 21 3 25 1 10 24 24 24 24 29 2 MIN. QNH PRESSURE IN HPA 1005.5 1007.4 999.6 1006.5 1005.6 1000.9 999.2 1000.6 1006.2 1010.5 1009.9 1005.4 999.2 DAY 20 2 12 8 29 30 16 6 16 2 22 13 MEAN QFF PRESSURE IN HPA 1016.6 1014.1 1010.8 1008.4 1003.0 997.3 989.9 993.3 1000.4 1010.5 1014.9 1015.3 1006.2 MAX. QFF PRESSURE IN HPA 1022.8 1019.8 1021.0 1013.4 1010.7 1004.4 993.2 997.7 1005.5 1015.9 1023.6 1022.1 1023.6 DAY 24 21 3 17 1 10 19 30 24 24 29 29 MIN. QFF PRESSURE IN HPA 1003.8 1008.0 999.5 1002.8 997.1 989.0 986.9 989.0 995.8 1002.4 1004.8 1003.3 986.9 DAY 20 8 12 29 27 30 16 6 1 2 22 13 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 M MEANS AND EXTREMES FOR THE YEAR 1962 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.4 9.7 14.1 15.7 23.3 27.5 31.7 30.2 25.7 19.4 12.5 8.0 18.6 MINIMUN AIR TEMPERATURE (C) 0.9 3.9 6.6 9.4 14.4 17.8 22.7 21.9 16.9 11.8 6.3 3.8 11.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 1 1 25 24 2 0 0 0 53 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 12 4 0 0 0 0 0 0 0 0 1 4 21 TEMPERATURE RECORDS LOWEST(C) -3.0 -2.0 3.0 6.0 7.0 14.0 18.0 19.0 12.0 9.0 0.0 -2.0 -3.0 DAY 31 23 3 6 1 10 1 25 27 13 30 2 MAXIMUM AIR TEMPERATURE (C) 10.7 16.5 22.8 23.5 33.2 38.5 41.7 39.8 36.5 28.6 20.5 14.2 27.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 1 3 24 30 31 31 30 8 0 0 158 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 15.0 24.0 31.0 31.0 41.0 41.0 45.0 42.0 41.0 33.0 28.0 18.0 45.0 DAY 1 17 24 9 24 23 18 1 2 1 1 4 DIF. BETWEEN (MAX.-MIN.) (C) 9.8 12.6 16.2 14.1 18.8 20.7 19.0 17.9 19.6 16.8 14.2 10.4 15.8 MEAN DAILY TEMP. (MDT) (C) 5.8 10.2 14.7 16.4 23.8 28.1 32.2 30.9 26.7 20.2 13.4 9.0 19.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 97.5 214.5 346.5 306.0 171.0 11.5 0.0 0.0 1147.0 HEATING DEG. DAYS(BASE 18 0C) 378.0 219.0 104.5 57.5 2.0 0.0 0.0 0.0 0.0 1.5 139.5 279.5 1181.5 DEWPOINT (MEAN C) 0.1 1.8 3.7 6.8 8.8 9.4 7.5 7.5 6.8 5.0 2.7 1.6 5.1 MIXING RATIO (G/KG) 4.42 5.11 5.76 7.15 8.19 8.53 7.59 7.57 7.20 6.33 5.50 5.06 6.53 VAPOUR PRESSURE (HPA) 6.26 7.20 8.12 10.04 11.48 11.93 10.54 10.54 10.06 8.93 7.77 7.14 9.17 SATURATION DEF. (HPA) 2.94 5.40 9.08 8.80 19.51 27.80 38.75 34.77 25.45 14.98 7.56 3.92 16.58 RELATIVE HUMIDITY (MEAN %) 70 60 52 58 42 34 24 25 31 40 53 66 46 RELATIVE HUMIDITY (MAX. %) 82 73 65 75 57 47 35 35 41 49 64 79 59 RELATIVE HUMIDITY (MIN. %) 58 46 36 41 28 22 13 16 21 29 39 51 33 RELATIVE HUMIDITY (MEAN% 03UTC) 76 70 63 67 56 46 33 35 39 48 61 74 56 RELATIVE HUMIDITY (MEAN% 09UTC) 60 47 37 44 30 22 17 18 21 30 39 53 35 RELATIVE HUMIDITY (MEAN% 15UTC) 70 58 48 56 34 29 18 22 28 37 55 67 44 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 109.4 38.7 4.8 187.4 1.7 4.0 0.0 0.0 0.0 5.9 33.0 76.6 461.5 DAYS WITH PRECIPITATION >=10 4 1 0 7 0 0 0 0 0 0 1 2 15 DAYS WITH PRECIPITATION >= 5 7 3 0 10 0 0 0 0 0 0 3 5 28 DAYS WITH PRECIPITATION >= 1 10 7 3 11 1 1 0 0 0 2 4 10 49 DAYS WITH PRECIPITATION 12 11 6 13 2 1 0 0 0 4 4 13 66 GREATEST DAILY PRECIPITATION 27.0 18.0 2.0 43.0 1.4 4.0 0.0 0.0 0.0 3.0 18.0 27.0 43.0 DAY 2 18 29 2 6 5 ** ** ** 27 7 23 DAY WITH THUNDER STORM 0 2 1 7 2 0 0 0 0 0 0 0 12 DAYS WITH SNOW OR SLEET 2 0 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH DUST 0 1 5 1 2 5 1 5 1 0 0 0 21 WIND DIRECTION (PREVAILING) 315 270 270 315 270 270 315 315 180 180 180 180 315 PREVAILING WIND SPEED(KNOTS) 9.8 11.2 14.0 9.1 11.9 11.9 3.1 5.9 7.2 8.1 8.3 8.5 8.6 PREVAILING WIND PERCENT 19.0 14.3 15.7 15.0 13.3 12.5 14.1 11.3 12.1 10.1 12.5 13.3 12.4 CALMS PERCENT OF WIND 40.3 39.7 39.1 55.4 52.0 54.2 61.7 51.6 59.6 66.9 53.8 55.6 52.6 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 284 239 274 284 266 253 334 308 251 216 239 231 264 VECTOR WIND MAGNITUDE(KNOTS) 2.9 3.0 3.8 2.8 2.5 2.5 0.7 1.0 1.4 1.1 1.4 1.2 1.8 WIND STEADINESES (MEAN %) 50.0 46.9 55.1 60.9 51.0 54.3 46.7 32.3 37.8 34.4 35.0 30.0 40.9 WIND SPEED (MEAN KNOTS) 5.8 6.4 6.9 4.6 4.9 4.6 1.5 3.1 3.7 3.2 4.0 4.0 4.4 FASTEST WIND DIRECTION 240 180 260 240 260 270 30 360 120 270 330 300 260 FASTEST WIND SPEED (KNOTS) 18 20 25 22 24 22 20 20 20 20 20 18 25 DAY 5 20 28 4 10 4 27 5 26 9 9 6 DAYS WITH SKY CLEAR (0-2)/8 13 10 10 11 23 27 28 28 30 22 24 12 238 DAYS WITH P.CLOUDY (3-6)/8 8 10 20 15 8 3 3 3 0 9 3 12 94 DAYS WITH CLOUDY (7-8)/8 10 8 1 4 0 0 0 0 0 0 3 7 33 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 0 0 0 0 0 0 0 0 0 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 887.5 883.8 884.8 884.1 884.3 882.0 875.0 877.1 879.9 886.3 887.8 885.3 883.2 MAX. QFE PRESSURE IN HPA 894.7 890.4 893.6 890.2 889.6 886.3 881.1 883.0 888.2 893.2 892.8 891.0 894.7 DAY-HOUR 19- 6 1- 9 3- 6 24- 6 17- 6 2- 6 31- 6 9- 6 29- 6 28- 6 23- 6 1- 6 MIN. QFE PRESSURE IN HPA 880.5 871.2 874.0 877.3 878.0 876.9 868.7 871.3 873.0 877.4 883.8 878.6 868.7 DAY-HOUR 22-12 20-15 28- 0 4-15 25-15 29-15 13-15 3-15 16-12 10-12 14-12 9-12 MEAN QNH PRESSURE IN HPA 1018.3 1014.2 1015.2 1014.5 1014.7 1012.2 1004.2 1006.7 1009.8 1016.9 1018.6 1015.8 1013.4 MAX. QNH PRESSURE IN HPA 1026.3 1021.5 1025.1 1021.3 1020.6 1016.9 1011.1 1013.2 1019.1 1024.7 1024.2 1022.2 1026.3 DAY-HOUR 19- 6 1- 9 3- 6 24- 6 17- 6 2- 6 31- 6 9- 6 29- 6 28- 6 23- 6 1- 6 MIN. QNH PRESSURE IN HPA 1010.5 1000.1 1003.2 1006.9 1007.7 1006.4 997.3 1000.2 1002.1 1007.0 1014.1 1008.3 997.3 DAY-HOUR 22-12 20-15 28- 0 4-15 25-15 29-15 13-15 3-15 16-12 10-12 14-12 9-12 MEAN QFF PRESSURE IN HPA 1019.2 1012.9 1011.8 1010.1 1006.9 1002.5 992.8 995.8 1001.0 1011.0 1016.0 1015.4 1008.0 MAX. QFF PRESSURE IN HPA 1027.8 1022.9 1024.4 1018.0 1014.3 1008.0 1000.5 1003.6 1012.5 1020.0 1022.5 1023.2 1027.8 DAY-HOUR 19- 6 1- 6 3- 6 24- 6 1- 6 2- 6 31- 6 25- 3 29- 6 28- 3 23- 6 2- 6 MIN. QFF PRESSURE IN HPA 1009.9 996.5 996.6 1002.7 998.0 996.1 985.8 988.7 992.5 1000.2 1010.5 1006.9 985.8 DAY-HOUR 27- 0 18- 0 27-21 4-12 25-12 29-18 13-12 5-12 16-12 10-12 14-12 9-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 887.5 884.1 884.8 884.2 884.3 882.2 875.0 877.4 880.2 886.4 888.0 885.5 883.3 MAX. QFE PRESSURE IN HPA 894.0 889.9 892.1 889.2 888.7 885.7 879.6 882.2 886.4 892.0 891.7 890.0 894.0 DAY 19 1 4 24 16 2 31 25 29 28 23 2 MIN. QFE PRESSURE IN HPA 880.8 872.2 874.0 879.8 878.6 878.1 870.0 872.0 876.2 880.8 885.0 881.0 870.0 DAY 27 18 28 5 10 30 14 3 16 10 15 9 MEAN QNH PRESSURE IN HPA 1018.3 1014.5 1015.3 1014.6 1014.8 1012.3 1004.3 1007.0 1010.1 1017.0 1018.8 1016.1 1013.6 MAX. QNH PRESSURE IN HPA 1025.5 1021.0 1023.4 1020.2 1019.6 1016.3 1009.4 1012.4 1017.0 1023.3 1023.0 1021.1 1025.5 DAY 19 1 4 24 16 2 31 25 29 28 23 2 MIN. QNH PRESSURE IN HPA 1010.8 1001.2 1003.2 1009.7 1008.3 1007.8 998.7 1000.9 1005.6 1010.8 1015.5 1011.0 998.7 DAY 27 18 28 5 10 30 14 3 16 10 15 9 MEAN QFF PRESSURE IN HPA 1018.9 1012.7 1011.5 1009.7 1006.8 1002.3 992.3 995.7 1000.7 1010.8 1015.6 1015.2 1007.7 MAX. QFF PRESSURE IN HPA 1025.9 1021.8 1021.4 1015.6 1012.6 1006.0 998.0 1001.9 1008.8 1018.1 1020.0 1020.7 1025.9 DAY 19 1 3 24 1 2 2 25 29 28 23 2 MIN. QFF PRESSURE IN HPA 1009.9 996.5 996.8 1003.9 998.9 997.4 986.9 989.6 995.9 1004.2 1010.6 1009.5 986.9 DAY 27 18 28 16 10 30 14 3 16 11 6 9 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 887.4 884.1 885.0 884.1 884.7 882.7 875.4 877.7 880.7 886.7 888.4 885.5 883.5 MAX. QFE PRESSURE IN HPA 893.8 889.4 892.6 889.0 889.0 886.0 880.2 882.4 887.3 892.4 892.1 890.0 893.8 DAY 19 1 3 24 17 2 31 25 29 28 23 1 MIN. QFE PRESSURE IN HPA 880.5 876.0 874.3 879.2 878.4 878.4 870.3 872.0 875.7 880.3 885.3 880.6 870.3 DAY 27 18 28 16 10 30 14 3 16 10 15 9 MEAN QNH PRESSURE IN HPA 1018.2 1014.4 1015.5 1014.5 1015.1 1012.9 1004.7 1007.3 1010.7 1017.4 1019.3 1016.1 1013.8 MAX. QNH PRESSURE IN HPA 1025.3 1020.4 1024.0 1020.0 1020.0 1016.6 1010.1 1012.6 1018.1 1023.8 1023.4 1021.1 1025.3 DAY 19 1 3 24 17 2 31 25 29 28 23 1 MIN. QNH PRESSURE IN HPA 1010.5 1005.4 1003.5 1009.0 1008.1 1008.1 999.0 1000.9 1005.1 1010.2 1015.8 1010.6 999.0 DAY 27 18 28 16 10 30 14 3 16 10 15 9 MEAN QFF PRESSURE IN HPA 1019.6 1013.8 1013.2 1011.2 1008.3 1004.4 993.9 997.3 1003.1 1012.5 1017.6 1016.3 1009.3 MAX. QFF PRESSURE IN HPA 1026.8 1021.9 1023.5 1016.9 1014.2 1007.8 1000.0 1003.6 1011.9 1020.0 1022.5 1022.6 1026.8 DAY 19 1 3 23 1 2 2 25 29 28 24 2 MIN. QFF PRESSURE IN HPA 1010.9 1001.9 998.4 1003.4 1000.2 999.2 988.4 990.5 996.8 1004.3 1013.6 1009.4 988.4 DAY 27 18 28 16 10 30 14 3 16 10 4 9 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 888.3 884.8 885.9 884.8 885.2 883.1 876.4 878.4 881.3 887.3 889.1 886.3 884.3 MAX. QFE PRESSURE IN HPA 894.7 890.0 893.6 890.2 889.6 886.3 881.1 883.0 888.2 893.2 892.8 891.0 894.7 DAY 19 1 3 24 17 2 31 9 29 28 23 1 MIN. QFE PRESSURE IN HPA 881.8 876.3 875.0 880.0 879.0 879.0 871.1 872.8 875.3 880.8 886.0 881.2 871.1 DAY 27 18 28 16 10 29 14 3 16 10 14 9 MEAN QNH PRESSURE IN HPA 1019.2 1015.3 1016.5 1015.3 1015.7 1013.4 1005.9 1008.1 1011.4 1018.1 1020.0 1017.0 1014.6 MAX. QNH PRESSURE IN HPA 1026.3 1021.1 1025.1 1021.3 1020.6 1016.9 1011.1 1013.2 1019.1 1024.7 1024.2 1022.2 1026.3 DAY 19 1 3 24 17 2 31 9 29 28 23 1 MIN. QNH PRESSURE IN HPA 1011.9 1005.8 1004.3 1009.9 1008.8 1008.8 999.9 1001.8 1004.6 1010.8 1016.6 1011.2 999.9 DAY 27 18 28 16 10 29 14 3 16 10 14 9 MEAN QFF PRESSURE IN HPA 1020.6 1014.7 1013.7 1011.4 1008.5 1004.3 995.1 997.8 1003.2 1012.8 1018.0 1017.1 1009.8 MAX. QFF PRESSURE IN HPA 1027.8 1022.9 1024.4 1018.0 1014.3 1008.0 1000.5 1002.6 1012.5 1020.0 1022.5 1023.2 1027.8 DAY 19 1 3 24 1 2 31 25 29 28 23 2 MIN. QFF PRESSURE IN HPA 1012.9 1001.9 999.3 1004.2 1001.3 998.4 989.0 991.8 995.7 1005.9 1014.0 1010.3 989.0 DAY 27 18 28 16 25 30 13 3 16 10 14 9 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 888.0 884.5 885.4 884.6 884.7 882.4 875.7 877.6 880.1 886.4 887.9 885.4 883.6 MAX. QFE PRESSURE IN HPA 894.0 890.4 892.8 889.4 888.8 885.8 880.1 882.2 886.7 892.6 891.4 889.7 894.0 DAY 19 1 3 24 16 1 31 9 25 28 23 1 MIN. QFE PRESSURE IN HPA 881.7 875.6 874.5 880.3 879.3 878.2 871.0 872.2 874.2 879.8 884.7 880.3 871.0 DAY 27 20 28 4 10 29 14 3 16 10 14 9 MEAN QNH PRESSURE IN HPA 1018.8 1014.9 1015.9 1015.0 1015.2 1012.6 1005.1 1007.2 1010.0 1017.1 1018.7 1015.9 1013.9 MAX. QNH PRESSURE IN HPA 1025.5 1021.5 1024.2 1020.4 1019.7 1016.4 1010.0 1012.4 1017.4 1024.0 1022.6 1020.7 1025.5 DAY 19 1 3 24 16 1 31 9 25 28 23 1 MIN. QNH PRESSURE IN HPA 1011.8 1005.0 1003.7 1010.2 1009.1 1007.9 999.8 1001.2 1003.4 1009.7 1015.1 1010.2 999.8 DAY 27 20 28 4 10 29 14 3 16 10 14 9 MEAN QFF PRESSURE IN HPA 1019.2 1012.9 1011.5 1009.7 1006.6 1001.9 993.2 995.7 1000.2 1010.1 1015.1 1014.7 1007.5 MAX. QFF PRESSURE IN HPA 1025.6 1022.5 1021.8 1016.7 1012.1 1006.6 998.2 1000.6 1008.8 1017.8 1018.8 1019.7 1025.6 DAY 19 1 3 20 1 1 27 25 29 28 23 1 MIN. QFF PRESSURE IN HPA 1012.2 1001.1 997.9 1004.0 998.9 996.7 988.1 989.5 993.1 1002.7 1011.2 1009.2 988.1 DAY 27 20 28 10 25 29 14 3 16 10 14 9 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 886.6 883.0 884.0 883.6 884.0 881.6 874.4 876.1 878.6 885.3 886.7 884.4 882.4 MAX. QFE PRESSURE IN HPA 892.6 888.8 891.6 889.0 888.0 885.5 878.8 880.9 885.2 891.0 890.6 888.3 892.6 DAY 18 1 3 23 16 1 31 9 25 28 23 1 MIN. QFE PRESSURE IN HPA 880.5 873.2 874.0 878.3 878.5 877.8 869.3 871.5 873.0 877.4 883.8 878.6 869.3 DAY 22 20 28 4 25 30 13 3 16 10 14 9 MEAN QNH PRESSURE IN HPA 1017.3 1013.3 1014.4 1014.0 1014.4 1011.7 1003.7 1005.5 1008.4 1015.8 1017.4 1014.8 1012.5 MAX. QNH PRESSURE IN HPA 1024.0 1019.7 1022.9 1020.0 1018.8 1016.0 1008.6 1010.9 1015.7 1022.2 1021.7 1019.2 1024.0 DAY 18 1 3 23 16 1 31 9 25 28 23 1 MIN. QNH PRESSURE IN HPA 1010.5 1002.3 1003.2 1008.0 1008.2 1007.4 997.9 1000.4 1002.1 1007.0 1014.1 1008.3 997.9 DAY 22 20 28 4 25 30 13 3 16 10 14 9 MEAN QFF PRESSURE IN HPA 1017.8 1011.4 1010.3 1008.8 1005.9 1001.4 991.6 994.1 998.7 1009.4 1014.2 1013.8 1006.4 MAX. QFF PRESSURE IN HPA 1024.1 1020.4 1020.0 1016.1 1011.7 1005.9 997.4 998.8 1006.7 1016.0 1018.6 1018.5 1024.1 DAY 18 1 3 20 12 16 1 24 25 28 23 3 MIN. QFF PRESSURE IN HPA 1010.8 999.0 998.1 1002.7 998.0 996.7 985.8 988.7 992.5 1000.2 1010.5 1006.9 985.8 DAY 27 20 28 4 25 30 13 5 16 10 14 9 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 886.9 882.8 883.9 883.4 883.3 881.0 873.6 875.6 878.6 885.5 887.0 884.7 882.2 MAX. QFE PRESSURE IN HPA 892.8 888.0 891.0 888.9 887.3 884.5 877.6 879.7 885.2 891.3 890.9 889.0 892.8 DAY 18 10 3 24 16 1 31 9 25 28 23 3 MIN. QFE PRESSURE IN HPA 880.8 871.2 875.0 877.3 878.0 876.9 868.7 871.3 874.5 878.2 884.1 879.6 868.7 DAY 22 20 27 4 25 29 13 3 16 10 14 9 MEAN QNH PRESSURE IN HPA 1017.6 1013.1 1014.2 1013.7 1013.6 1011.0 1002.7 1004.9 1008.3 1016.0 1017.7 1015.1 1012.3 MAX. QNH PRESSURE IN HPA 1024.2 1018.8 1022.2 1019.8 1018.1 1014.9 1007.2 1009.6 1015.7 1022.5 1022.1 1020.0 1024.2 DAY 18 10 3 24 16 1 31 9 25 28 23 3 MIN. QNH PRESSURE IN HPA 1010.8 1000.1 1004.3 1006.9 1007.7 1006.4 997.3 1000.2 1003.7 1007.9 1014.5 1009.4 997.3 DAY 22 20 27 4 25 29 13 3 16 10 14 9 MEAN QFF PRESSURE IN HPA 1019.0 1012.3 1011.7 1010.2 1006.4 1002.3 991.7 994.8 1000.5 1010.9 1016.0 1015.2 1007.6 MAX. QFF PRESSURE IN HPA 1025.6 1019.8 1020.7 1016.4 1011.9 1006.2 997.3 1000.0 1008.6 1017.9 1020.9 1020.6 1025.6 DAY 18 1 3 24 12 16 1 24 29 28 23 3 MIN. QFF PRESSURE IN HPA 1011.5 998.3 1000.4 1003.6 998.5 997.2 986.0 989.5 996.0 1001.6 1011.3 1008.4 986.0 DAY 22 20 27 4 25 29 13 6 16 10 5 9 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 887.6 883.4 884.4 883.8 883.6 881.4 874.3 876.8 879.8 886.2 887.6 885.3 882.9 MAX. QFE PRESSURE IN HPA 893.8 889.1 891.4 889.3 888.0 884.6 878.7 881.5 886.0 891.5 891.2 889.7 893.8 DAY 18 10 3 23 16 1 1 24 25 28 23 2 MIN. QFE PRESSURE IN HPA 881.4 873.0 874.2 877.8 878.7 877.1 869.8 872.0 876.2 878.6 884.7 881.0 869.8 DAY 22 20 27 4 25 29 13 2 21 10 14 9 MEAN QNH PRESSURE IN HPA 1018.4 1013.7 1014.9 1014.1 1013.9 1011.5 1003.5 1006.3 1009.6 1016.9 1018.4 1015.8 1013.1 MAX. QNH PRESSURE IN HPA 1025.3 1020.1 1022.6 1020.3 1018.8 1015.0 1008.4 1011.6 1016.6 1022.8 1022.4 1020.7 1025.3 DAY 18 10 3 23 16 1 1 24 25 28 23 2 MIN. QNH PRESSURE IN HPA 1011.5 1002.1 1003.4 1007.4 1008.4 1006.7 998.5 1000.9 1005.6 1008.3 1015.1 1011.0 998.5 DAY 22 20 27 4 25 29 13 2 21 10 14 9 MEAN QFF PRESSURE IN HPA 1019.8 1013.0 1011.9 1010.2 1006.6 1002.3 992.6 996.0 1001.4 1011.5 1016.4 1015.9 1008.1 MAX. QFF PRESSURE IN HPA 1027.0 1020.8 1021.5 1016.8 1011.6 1006.2 998.4 1002.1 1009.5 1018.1 1020.7 1022.0 1027.0 DAY 18 10 3 23 12 16 1 24 28 28 30 2 MIN. QFF PRESSURE IN HPA 1012.5 1000.0 998.5 1002.9 999.1 996.1 987.4 990.6 996.4 1002.4 1012.1 1009.9 987.4 DAY 22 20 27 4 25 29 13 3 21 10 5 9 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 887.7 884.0 885.0 884.3 884.4 882.0 875.0 877.5 880.3 886.5 888.0 885.4 883.3 MAX. QFE PRESSURE IN HPA 894.0 889.1 892.4 889.8 889.0 885.7 879.3 882.3 886.3 892.0 891.5 890.0 894.0 DAY 18 10 3 23 16 1 1 24 28 27 23 1 MIN. QFE PRESSURE IN HPA 881.8 875.7 874.6 879.0 879.3 878.0 870.0 872.3 876.2 879.8 885.0 881.7 870.0 DAY 22 17 27 4 9 28 13 2 21 10 14 8 MEAN QNH PRESSURE IN HPA 1018.5 1014.3 1015.5 1014.7 1014.9 1012.1 1004.3 1007.1 1010.3 1017.1 1018.8 1016.0 1013.6 MAX. QNH PRESSURE IN HPA 1025.5 1020.1 1023.8 1020.9 1020.0 1016.3 1009.1 1012.5 1016.9 1023.3 1022.8 1021.1 1025.5 DAY 18 10 3 23 16 1 1 24 28 27 23 1 MIN. QNH PRESSURE IN HPA 1011.9 1005.1 1003.9 1008.8 1009.1 1007.7 998.7 1001.3 1005.6 1009.7 1015.5 1011.8 998.7 DAY 22 17 27 4 9 28 13 2 21 10 14 8 MEAN QFF PRESSURE IN HPA 1019.0 1012.3 1011.1 1009.4 1006.4 1001.6 992.4 995.7 1000.6 1010.3 1015.4 1014.9 1007.4 MAX. QFF PRESSURE IN HPA 1025.7 1020.0 1021.3 1015.9 1012.2 1006.6 997.3 1001.8 1008.6 1017.6 1019.5 1020.3 1025.7 DAY 18 1 3 23 15 1 1 24 28 27 30 1 MIN. QFF PRESSURE IN HPA 1011.8 999.8 996.6 1003.1 999.4 996.5 986.9 989.6 996.4 1002.2 1010.8 1010.4 986.9 DAY 26 17 27 4 25 28 13 2 11 10 5 19 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 M MEANS AND EXTREMES FOR THE YEAR 1963 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 7.6 9.7 10.7 15.4 16.9 25.7 29.8 29.5 24.9 20.5 11.5 4.9 17.2 MINIMUN AIR TEMPERATURE (C) 3.0 5.2 5.3 10.1 11.2 15.9 20.1 19.5 15.9 13.2 6.2 1.0 10.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 1 11 9 0 0 0 0 21 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 2 2 DAYS WITH FREEZING MIN.<= 0 11 0 1 0 0 0 0 0 0 0 0 10 22 TEMPERATURE RECORDS LOWEST(C) -2.0 1.0 -3.0 5.0 5.0 12.0 16.0 15.0 12.0 9.0 1.0 -6.0 -6.0 DAY 17 7 9 13 3 1 7 30 30 30 29 29 MAXIMUM AIR TEMPERATURE (C) 14.2 16.2 17.7 22.7 24.5 36.3 41.1 40.3 35.5 29.0 18.9 11.8 25.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 6 30 31 31 30 15 0 0 143 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 18.0 22.0 25.0 28.0 34.0 40.0 44.0 43.0 40.0 32.0 26.0 18.0 44.0 DAY 22 24 24 21 24 27 21 1 1 1 1 21 DIF. BETWEEN (MAX.-MIN.) (C) 11.2 11.0 12.4 12.6 13.3 20.4 21.0 20.8 19.6 15.8 12.7 10.8 15.2 MEAN DAILY TEMP. (MDT) (C) 8.6 10.7 11.5 16.4 17.9 26.1 30.6 29.9 25.7 21.1 12.5 6.4 18.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 12.0 152.5 297.5 276.0 142.0 18.0 0.0 0.0 898.0 HEATING DEG. DAYS(BASE 18 0C) 292.0 205.0 201.5 53.5 52.0 0.0 0.0 0.0 0.0 0.5 166.5 359.5 1330.5 DEWPOINT (MEAN C) 2.0 3.5 1.9 7.1 9.3 7.4 6.9 7.8 5.4 4.1 3.0 -1.1 4.8 MIXING RATIO (G/KG) 5.14 5.67 5.11 7.31 8.46 7.43 7.23 7.79 6.54 5.88 5.57 4.15 6.36 VAPOUR PRESSURE (HPA) 7.26 7.98 7.19 10.22 11.82 10.37 10.07 10.82 9.16 8.28 7.85 5.85 8.91 SATURATION DEF. (HPA) 3.54 4.57 6.27 7.89 8.77 25.10 34.98 33.13 24.46 17.00 6.43 3.20 14.61 RELATIVE HUMIDITY (MEAN %) 69 67 57 60 65 34 25 28 30 35 57 67 50 RELATIVE HUMIDITY (MAX. %) 81 83 72 80 83 51 36 42 39 44 69 79 63 RELATIVE HUMIDITY (MIN. %) 52 50 40 43 47 20 15 15 20 26 44 52 35 RELATIVE HUMIDITY (MEAN% 03UTC) 78 77 68 75 80 50 35 41 37 43 65 69 60 RELATIVE HUMIDITY (MEAN% 09UTC) 56 53 42 46 51 21 17 20 20 26 46 56 38 RELATIVE HUMIDITY (MEAN% 15UTC) 68 62 54 53 56 24 20 21 27 31 56 71 45 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 68.7 58.0 32.7 150.5 173.2 0.0 0.0 0.0 0.0 0.0 71.2 83.3 637.6 DAYS WITH PRECIPITATION >=10 3 1 2 3 6 0 0 0 0 0 1 3 19 DAYS WITH PRECIPITATION >= 5 5 5 3 6 9 0 0 0 0 0 1 4 33 DAYS WITH PRECIPITATION >= 1 7 11 4 10 13 0 0 0 0 0 2 12 59 DAYS WITH PRECIPITATION 9 12 8 13 16 0 0 0 0 1 3 12 74 GREATEST DAILY PRECIPITATION 21.0 27.0 10.0 46.3 39.0 0.0 0.0 0.0 0.0 0.0 68.0 33.0 68.0 DAY 27 10 11 12 10 ** ** ** ** ** 3 11 DAY WITH THUNDER STORM 0 0 2 6 1 0 0 0 0 0 0 2 11 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 5 5 DAYS WITH DUST 0 0 2 6 2 2 6 4 0 0 0 0 22 WIND DIRECTION (PREVAILING) 315 315 315 270 270 180 180 360 90 180 315 270 315 PREVAILING WIND SPEED(KNOTS) 9.3 11.6 12.5 12.6 11.2 7.7 8.9 3.3 7.3 8.5 10.6 12.8 10.9 PREVAILING WIND PERCENT 16.1 12.9 13.7 10.0 11.7 7.9 7.7 18.1 7.5 9.7 8.8 9.7 9.0 CALMS PERCENT OF WIND 65.3 64.3 50.8 59.6 60.5 70.8 71.8 50.4 63.8 61.7 67.1 55.2 61.7 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 268 277 269 267 244 237 245 269 231 230 255 241 254 VECTOR WIND MAGNITUDE(KNOTS) 1.4 1.8 2.9 1.8 2.5 0.8 0.9 0.8 1.1 1.3 1.1 2.3 1.5 WIND STEADINESES (MEAN %) 43.7 46.2 47.5 36.7 58.1 32.0 36.0 34.8 33.3 36.1 35.5 44.2 40.5 WIND SPEED (MEAN KNOTS) 3.2 3.9 6.1 4.9 4.3 2.5 2.5 2.3 3.3 3.6 3.1 5.2 3.7 FASTEST WIND DIRECTION 210 330 330 330 180 330 270 230 310 330 260 330 330 FASTEST WIND SPEED (KNOTS) 16 18 18 22 18 15 16 10 16 16 16 25 25 DAY 3 24 1 28 29 9 9 1 20 5 22 26 DAYS WITH SKY CLEAR (0-2)/8 16 11 15 7 13 30 29 30 30 22 21 19 243 DAYS WITH P.CLOUDY (3-6)/8 7 12 14 19 10 0 2 1 0 9 8 6 88 DAYS WITH CLOUDY (7-8)/8 8 5 2 4 8 0 0 0 0 0 1 6 34 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 0 1 0 0 0 0 0 3 4 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 886.1 884.1 882.3 880.8 880.6 879.5 876.7 874.9 880.7 884.3 885.0 884.1 881.6 MAX. QFE PRESSURE IN HPA 889.8 890.8 890.2 887.0 886.7 884.4 881.3 879.7 889.1 888.4 888.8 892.1 892.1 DAY-HOUR 21- 6 4- 6 23- 6 1- 6 15-21 2- 6 25- 3 5- 6 24- 6 12- 6 5- 0 21- 6 MIN. QFE PRESSURE IN HPA 882.4 877.2 874.6 874.0 874.2 873.6 870.3 869.7 874.1 881.0 881.1 871.6 869.7 DAY-HOUR 4- 3 10-12 5-12 16- 3 1-15 30-15 30-18 12-12 9-15 10-12 16-15 30-18 MEAN QNH PRESSURE IN HPA 1016.7 1014.5 1012.5 1010.8 1010.6 1009.3 1006.2 1004.2 1010.6 1014.7 1015.4 1014.5 1011.7 MAX. QNH PRESSURE IN HPA 1020.9 1022.0 1021.3 1017.7 1017.4 1014.8 1011.3 1009.6 1020.1 1019.3 1019.7 1023.4 1023.4 DAY-HOUR 21- 6 4- 6 23- 6 1- 6 15-21 2- 6 25- 3 5- 6 24- 6 12- 6 5- 0 21- 6 MIN. QNH PRESSURE IN HPA 1012.6 1006.8 1003.9 1003.2 1003.4 1002.7 999.0 998.4 1003.3 1011.0 1011.1 1000.5 998.4 DAY-HOUR 4- 3 10-12 5-12 16- 3 1-15 30-15 30-18 12-12 9-15 10-12 16-15 30-18 MEAN QFF PRESSURE IN HPA 1016.5 1013.1 1010.7 1006.6 1005.6 1000.5 995.6 993.6 1002.2 1008.4 1013.2 1015.6 1006.8 MAX. QFF PRESSURE IN HPA 1021.9 1022.8 1019.5 1015.7 1013.6 1007.7 1002.4 1000.5 1013.2 1013.7 1018.9 1025.1 1025.1 DAY-HOUR 21- 6 4- 6 23- 3 1- 6 15-21 1- 6 25- 3 30- 3 24- 3 16- 6 30- 3 21- 6 MIN. QFF PRESSURE IN HPA 1011.9 1004.6 999.8 997.8 996.0 992.0 986.9 986.6 993.8 1003.6 1005.7 1001.5 986.6 DAY-HOUR 4- 0 25-12 5-12 16- 9 29- 0 30-12 30-18 12-12 3-12 10-12 1-12 30-18 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 886.3 884.0 882.3 880.7 880.5 879.7 876.8 875.3 880.9 885.0 885.6 884.5 881.8 MAX. QFE PRESSURE IN HPA 889.0 888.8 889.0 886.0 886.4 883.8 880.0 878.6 887.6 887.3 888.8 890.4 890.4 DAY 22 4 23 2 16 2 25 5 24 13 5 22 MIN. QFE PRESSURE IN HPA 882.8 878.7 877.8 874.2 875.3 875.0 874.0 871.9 875.5 883.1 883.4 872.0 871.9 DAY 4 12 5 16 2 16 1 12 3 1 1 31 MEAN QNH PRESSURE IN HPA 1016.9 1014.4 1012.5 1010.7 1010.4 1009.6 1006.4 1004.6 1010.9 1015.4 1016.2 1014.9 1011.9 MAX. QNH PRESSURE IN HPA 1020.0 1019.7 1020.0 1016.6 1017.0 1014.1 1009.9 1008.3 1018.4 1018.1 1019.7 1021.5 1021.5 DAY 22 4 23 2 16 2 25 5 24 13 5 22 MIN. QNH PRESSURE IN HPA 1013.0 1008.4 1007.4 1003.4 1004.6 1004.3 1003.2 1000.8 1004.9 1013.4 1013.7 1000.9 1000.8 DAY 4 12 5 16 2 16 1 12 3 1 1 31 MEAN QFF PRESSURE IN HPA 1016.3 1012.5 1010.3 1006.1 1005.1 1000.6 995.3 993.2 1002.1 1008.8 1013.5 1015.4 1006.6 MAX. QFF PRESSURE IN HPA 1018.7 1018.8 1017.7 1012.8 1013.1 1005.9 999.0 998.0 1010.2 1011.9 1016.5 1022.1 1022.1 DAY 14 4 23 2 16 2 25 5 24 21 5 28 MIN. QFF PRESSURE IN HPA 1011.9 1005.2 1003.9 998.7 996.0 993.8 990.7 989.0 995.3 1006.1 1007.6 1003.1 989.0 DAY 4 25 31 16 29 30 31 2 4 1 1 31 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 886.4 884.3 882.6 881.0 880.7 880.2 877.4 875.7 881.5 885.4 885.8 884.7 882.1 MAX. QFE PRESSURE IN HPA 889.0 889.7 889.4 886.3 885.8 884.0 881.3 879.1 888.8 887.6 888.4 891.8 891.8 DAY 22 4 23 2 16 27 25 5 24 21 5 21 MIN. QFE PRESSURE IN HPA 882.4 879.2 876.0 874.0 875.1 875.0 874.3 871.8 875.8 882.9 883.2 871.8 871.8 DAY 4 12 5 16 2 16 31 12 3 25 1 31 MEAN QNH PRESSURE IN HPA 1017.0 1014.7 1012.8 1011.0 1010.7 1010.1 1007.0 1005.1 1011.5 1015.9 1016.4 1015.1 1012.3 MAX. QNH PRESSURE IN HPA 1020.0 1020.7 1020.4 1016.9 1016.4 1014.4 1011.3 1008.9 1019.7 1018.4 1019.3 1023.1 1023.1 DAY 22 4 23 2 16 27 25 5 24 21 5 21 MIN. QNH PRESSURE IN HPA 1012.6 1009.0 1005.4 1003.2 1004.4 1004.3 1003.5 1000.7 1005.2 1013.1 1013.5 1000.7 1000.7 DAY 4 12 5 16 2 16 31 12 3 25 1 31 MEAN QFF PRESSURE IN HPA 1017.6 1014.0 1011.8 1007.6 1006.4 1002.2 997.5 995.8 1004.4 1010.4 1014.8 1016.9 1008.3 MAX. QFF PRESSURE IN HPA 1020.6 1021.4 1019.5 1014.8 1013.5 1007.3 1002.4 1000.5 1013.2 1013.3 1018.9 1024.6 1024.6 DAY 16 4 23 1 16 1 25 30 24 21 30 21 MIN. QFF PRESSURE IN HPA 1012.2 1005.7 1002.4 999.8 999.0 995.2 992.6 991.0 997.9 1006.6 1008.7 1002.8 991.0 DAY 4 25 5 16 29 30 31 12 3 25 1 31 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 887.3 885.2 883.4 881.6 881.1 880.5 877.8 876.2 882.0 885.7 886.2 885.3 882.7 MAX. QFE PRESSURE IN HPA 889.8 890.8 890.2 887.0 886.0 884.4 881.3 879.7 889.1 888.4 888.8 892.1 892.1 DAY 21 4 23 1 16 2 25 5 24 12 5 21 MIN. QFE PRESSURE IN HPA 883.2 879.8 876.0 874.6 876.2 875.6 875.2 872.2 876.3 883.8 884.1 873.3 872.2 DAY 4 10 5 16 1 16 1 12 3 6 1 31 MEAN QNH PRESSURE IN HPA 1018.0 1015.7 1013.7 1011.7 1011.2 1010.5 1007.4 1005.6 1012.2 1016.2 1016.9 1015.8 1012.9 MAX. QNH PRESSURE IN HPA 1020.9 1022.0 1021.3 1017.7 1016.6 1014.8 1011.3 1009.6 1020.1 1019.3 1019.7 1023.4 1023.4 DAY 21 4 23 1 16 2 25 5 24 12 5 21 MIN. QNH PRESSURE IN HPA 1013.5 1009.7 1005.4 1003.9 1005.6 1005.0 1004.5 1001.2 1005.8 1014.1 1014.5 1002.4 1001.2 DAY 4 10 5 16 1 16 1 12 3 6 1 31 MEAN QFF PRESSURE IN HPA 1018.4 1015.1 1012.2 1007.9 1006.6 1002.2 997.4 995.5 1004.2 1010.4 1015.3 1017.6 1008.6 MAX. QFF PRESSURE IN HPA 1021.9 1022.8 1019.4 1015.7 1012.7 1007.7 1001.4 1000.0 1012.5 1013.7 1018.6 1025.1 1025.1 DAY 21 4 23 1 16 1 25 30 24 16 29 21 MIN. QFF PRESSURE IN HPA 1012.9 1007.7 1002.5 999.6 999.9 995.9 992.5 990.8 997.4 1007.3 1009.2 1004.3 990.8 DAY 4 25 5 16 29 30 22 12 3 6 1 31 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 886.2 884.4 882.5 881.1 881.0 879.8 877.0 875.0 880.8 884.1 885.0 884.4 881.8 MAX. QFE PRESSURE IN HPA 888.4 889.0 888.8 885.8 885.1 883.7 880.6 878.2 887.5 886.8 887.4 890.2 890.2 DAY 21 4 23 1 16 2 25 5 24 12 5 14 MIN. QFE PRESSURE IN HPA 883.3 878.6 875.0 874.0 876.5 875.0 874.5 870.9 874.8 881.8 883.0 874.5 870.9 DAY 4 10 5 16 6 30 31 12 3 25 16 31 MEAN QNH PRESSURE IN HPA 1016.8 1014.8 1012.6 1011.2 1011.0 1009.7 1006.5 1004.3 1010.7 1014.5 1015.5 1014.9 1011.9 MAX. QNH PRESSURE IN HPA 1019.3 1020.0 1019.7 1016.4 1015.6 1014.0 1010.6 1007.9 1018.3 1017.5 1018.2 1021.3 1021.3 DAY 21 4 23 1 16 2 25 5 24 12 5 14 MIN. QNH PRESSURE IN HPA 1013.6 1008.3 1004.3 1003.2 1006.0 1004.3 1003.7 999.7 1004.1 1011.9 1013.2 1003.7 999.7 DAY 4 10 5 16 6 30 31 12 3 25 16 31 MEAN QFF PRESSURE IN HPA 1015.8 1012.7 1010.0 1006.3 1005.3 1000.0 994.8 992.8 1001.2 1007.1 1012.4 1015.3 1006.1 MAX. QFF PRESSURE IN HPA 1018.7 1018.9 1016.4 1012.4 1011.0 1006.3 999.2 996.9 1009.5 1010.4 1015.3 1021.6 1021.6 DAY 16 4 22 1 15 1 25 5 25 19 13 14 MIN. QFF PRESSURE IN HPA 1012.3 1006.8 1000.2 997.8 999.6 992.4 990.1 988.2 993.8 1004.1 1006.4 1004.9 988.2 DAY 4 25 5 16 29 30 31 12 3 10 1 25 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 885.2 883.3 881.5 880.4 880.3 879.0 876.1 873.8 879.6 883.2 883.8 883.0 880.8 MAX. QFE PRESSURE IN HPA 888.4 887.4 887.2 885.5 884.6 883.6 880.0 877.4 886.2 885.6 886.1 889.0 889.0 DAY 27 4 22 1 15 2 25 5 24 19 5 20 MIN. QFE PRESSURE IN HPA 882.7 877.2 874.6 874.0 876.0 874.2 872.2 869.7 874.3 881.0 881.4 874.8 869.7 DAY 3 10 5 16 10 30 31 12 3 10 16 2 MEAN QNH PRESSURE IN HPA 1015.7 1013.6 1011.6 1010.3 1010.2 1008.7 1005.6 1003.0 1009.5 1013.5 1014.1 1013.2 1010.7 MAX. QNH PRESSURE IN HPA 1019.3 1018.2 1017.9 1016.0 1015.0 1013.9 1009.9 1007.0 1016.8 1016.2 1016.7 1020.0 1020.0 DAY 27 4 22 1 15 2 25 5 24 19 5 20 MIN. QNH PRESSURE IN HPA 1012.9 1006.8 1003.9 1003.2 1005.4 1003.4 1001.2 998.4 1003.5 1011.0 1011.5 1004.1 998.4 DAY 3 10 5 16 10 30 31 12 3 10 16 2 MEAN QFF PRESSURE IN HPA 1014.8 1011.7 1009.3 1005.6 1004.7 999.5 994.4 991.5 1000.5 1006.7 1011.3 1013.6 1005.3 MAX. QFF PRESSURE IN HPA 1018.1 1017.1 1015.3 1012.0 1010.4 1006.0 999.2 996.2 1007.9 1010.3 1014.6 1019.7 1019.7 DAY 27 4 22 1 15 1 25 5 25 19 29 28 MIN. QFF PRESSURE IN HPA 1012.0 1004.6 999.8 998.8 998.5 992.0 987.8 986.6 993.8 1003.6 1005.7 1003.6 986.6 DAY 31 25 5 16 29 30 31 12 3 10 1 2 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 885.4 883.6 881.6 880.1 879.9 878.4 875.6 873.4 879.4 883.1 883.8 883.4 880.6 MAX. QFE PRESSURE IN HPA 888.8 887.8 887.5 885.6 884.0 883.0 879.3 876.2 885.7 885.7 886.8 889.1 889.1 DAY 27 4 22 1 15 2 24 5 24 12 5 21 MIN. QFE PRESSURE IN HPA 883.0 877.6 875.4 874.8 874.2 873.6 871.5 869.9 874.1 881.2 881.1 872.9 869.9 DAY 3 10 5 29 1 30 30 12 9 6 16 30 MEAN QNH PRESSURE IN HPA 1015.9 1013.9 1011.7 1010.0 1009.8 1008.1 1005.0 1002.5 1009.3 1013.4 1014.2 1013.7 1010.6 MAX. QNH PRESSURE IN HPA 1019.7 1018.6 1018.3 1016.2 1014.4 1013.2 1009.1 1005.6 1016.3 1016.3 1017.5 1020.1 1020.1 DAY 27 4 22 1 15 2 24 5 24 12 5 21 MIN. QNH PRESSURE IN HPA 1013.2 1007.2 1004.7 1004.1 1003.4 1002.7 1000.4 998.6 1003.3 1011.2 1011.1 1002.0 998.6 DAY 3 10 5 29 1 30 30 12 9 6 16 30 MEAN QFF PRESSURE IN HPA 1016.3 1013.1 1010.6 1006.4 1005.3 1000.0 995.4 993.1 1001.9 1007.8 1012.5 1015.4 1006.5 MAX. QFF PRESSURE IN HPA 1020.0 1018.9 1016.8 1013.8 1010.9 1006.5 1000.0 997.4 1009.0 1011.0 1016.2 1021.3 1021.3 DAY 21 4 21 1 15 1 24 30 24 19 29 21 MIN. QFF PRESSURE IN HPA 1013.1 1005.0 1001.8 1000.6 999.4 992.7 989.2 988.7 995.6 1004.8 1006.6 1004.2 988.7 DAY 3 25 5 29 29 30 30 12 9 10 1 30 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 886.1 884.0 882.3 880.8 880.6 879.0 876.3 874.7 880.4 883.8 884.4 883.8 881.4 MAX. QFE PRESSURE IN HPA 889.1 888.1 888.1 886.6 885.0 883.7 879.7 877.7 886.4 886.6 886.7 890.0 890.0 DAY 27 4 22 1 15 2 24 4 24 12 4 21 MIN. QFE PRESSURE IN HPA 883.0 878.8 876.9 875.3 876.0 873.8 870.3 871.2 875.3 882.3 881.8 871.6 870.3 DAY 3 10 30 29 1 30 30 7 9 5 16 30 MEAN QNH PRESSURE IN HPA 1016.7 1014.4 1012.5 1010.8 1010.5 1008.8 1005.8 1004.0 1010.3 1014.2 1014.9 1014.1 1011.4 MAX. QNH PRESSURE IN HPA 1020.1 1019.0 1019.0 1017.3 1015.5 1014.0 1009.6 1007.3 1017.0 1017.3 1017.4 1021.1 1021.1 DAY 27 4 22 1 15 2 24 4 24 12 4 21 MIN. QNH PRESSURE IN HPA 1013.2 1008.6 1006.4 1004.6 1005.4 1003.0 999.0 1000.1 1004.6 1012.5 1011.9 1000.5 999.0 DAY 3 10 30 29 1 30 30 7 9 5 16 30 MEAN QFF PRESSURE IN HPA 1017.1 1013.6 1011.0 1007.0 1006.0 1000.4 995.7 994.0 1002.3 1008.3 1013.3 1015.9 1007.0 MAX. QFF PRESSURE IN HPA 1020.2 1019.8 1016.9 1015.0 1011.0 1006.7 999.7 998.2 1009.1 1011.4 1016.4 1022.6 1022.6 DAY 21 4 21 1 15 1 24 29 24 12 29 21 MIN. QFF PRESSURE IN HPA 1012.4 1006.8 1003.6 1000.7 1001.1 993.3 986.9 990.0 996.3 1005.9 1007.6 1001.5 986.9 DAY 3 25 30 29 29 30 30 7 9 23 1 30 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 886.2 884.0 882.6 880.9 880.8 879.5 876.8 875.3 880.9 884.5 885.1 884.2 881.7 MAX. QFE PRESSURE IN HPA 889.0 888.4 888.8 886.9 886.7 884.0 880.0 878.8 886.8 887.2 887.5 890.4 890.4 DAY 21 3 22 1 15 3 24 4 23 12 4 21 MIN. QFE PRESSURE IN HPA 883.0 878.0 877.3 875.6 875.6 874.0 873.5 871.9 876.1 882.1 883.0 872.0 871.9 DAY 3 11 19 15 1 30 30 12 9 24 1 30 MEAN QNH PRESSURE IN HPA 1016.8 1014.4 1012.8 1010.9 1010.8 1009.3 1006.3 1004.6 1010.9 1015.0 1015.6 1014.6 1011.8 MAX. QNH PRESSURE IN HPA 1020.0 1019.3 1019.7 1017.6 1017.4 1014.4 1009.9 1008.6 1017.5 1017.9 1018.3 1021.5 1021.5 DAY 21 3 22 1 15 3 24 4 23 12 4 21 MIN. QNH PRESSURE IN HPA 1013.2 1007.7 1006.9 1005.0 1005.0 1003.2 1002.6 1000.8 1005.5 1012.2 1013.2 1000.9 1000.8 DAY 3 11 19 15 1 30 30 12 9 24 1 30 MEAN QFF PRESSURE IN HPA 1015.8 1012.3 1010.2 1006.0 1005.2 999.6 994.7 993.3 1001.5 1007.7 1012.7 1015.2 1006.2 MAX. QFF PRESSURE IN HPA 1018.8 1018.0 1016.8 1014.0 1013.6 1006.0 998.1 997.6 1008.8 1010.7 1016.2 1021.3 1021.3 DAY 16 4 22 1 15 1 24 31 23 20 29 28 MIN. QFF PRESSURE IN HPA 1012.0 1005.9 1002.6 999.7 998.7 992.1 988.9 989.3 994.8 1005.1 1007.1 1002.1 988.9 DAY 3 25 30 15 28 30 30 12 9 24 1 30 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 M MEANS AND EXTREMES FOR THE YEAR 1964 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -1.2 6.4 12.7 15.4 21.3 26.2 30.2 28.3 26.4 20.9 14.1 6.8 17.3 MINIMUN AIR TEMPERATURE (C) -5.9 1.9 7.7 9.3 12.2 16.6 20.9 18.1 14.9 9.3 6.9 1.5 9.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 15 4 1 0 0 0 20 DAYS WITH MINIMUM TEMP. <=-4 27 0 0 0 0 0 0 0 0 0 0 3 30 DAYS WITH FREEZING MIN.<= 0 29 9 0 0 0 0 0 0 0 0 1 10 49 TEMPERATURE RECORDS LOWEST(C) -13.0 -2.0 3.0 5.0 6.0 15.0 16.0 15.0 11.0 5.0 0.0 -4.0 -13.0 DAY 20 8 5 10 2 1 2 28 11 28 29 21 MAXIMUM AIR TEMPERATURE (C) 5.8 12.9 19.6 23.1 30.9 36.6 40.5 39.2 35.5 28.6 19.9 12.1 25.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 3 23 30 31 31 30 12 0 0 160 DAYS WITH MAXIMUM TEMP. <= 0 2 0 0 0 0 0 0 0 0 0 0 0 2 TEMPERATURE RECORDS HIGHEST(C) 10.0 18.0 27.0 31.0 35.0 39.0 45.0 42.0 40.0 34.0 25.0 19.0 45.0 DAY 8 22 18 26 30 3 12 10 1 1 18 5 DIF. BETWEEN (MAX.-MIN.) (C) 11.7 11.0 11.9 13.8 18.7 20.0 19.6 21.1 20.6 19.3 13.0 10.6 15.9 MEAN DAILY TEMP. (MDT) (C) -0.0 7.4 13.6 16.2 21.6 26.6 30.7 28.7 25.2 19.0 13.4 6.8 17.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 1.0 46.5 168.5 300.0 237.5 126.5 5.5 0.0 0.0 885.5 HEATING DEG. DAYS(BASE 18 0C) 559.0 307.0 136.5 66.0 6.5 0.0 0.0 0.0 0.0 15.0 137.5 348.0 1575.5 DEWPOINT (MEAN C) -6.0 1.3 4.5 4.5 5.0 5.2 5.8 4.8 3.8 2.4 2.2 -1.8 2.7 MIXING RATIO (G/KG) 2.88 4.88 6.07 6.08 6.31 6.42 6.75 6.30 5.83 5.25 5.27 3.98 5.50 VAPOUR PRESSURE (HPA) 4.08 6.87 8.53 8.52 8.86 8.97 9.39 8.76 8.16 7.39 7.43 5.63 7.71 SATURATION DEF. (HPA) 1.82 3.08 6.88 9.89 18.31 27.38 36.47 32.65 28.94 19.35 9.63 4.73 16.59 RELATIVE HUMIDITY (MEAN %) 71 71 60 51 36 27 23 24 25 31 47 56 44 RELATIVE HUMIDITY (MAX. %) 82 83 76 67 51 37 31 33 36 44 59 67 56 RELATIVE HUMIDITY (MIN. %) 56 58 45 36 24 18 15 14 17 23 37 49 33 RELATIVE HUMIDITY (MEAN% 03UTC) 76 78 70 62 49 37 31 32 36 44 54 59 52 RELATIVE HUMIDITY (MEAN% 09UTC) 59 61 49 39 26 18 16 19 19 23 40 50 35 RELATIVE HUMIDITY (MEAN% 15UTC) 71 71 55 48 30 23 19 16 21 30 51 64 42 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 3.7 87.7 45.3 11.8 6.8 0.0 0.1 0.0 0.0 0.0 77.7 109.5 342.6 DAYS WITH PRECIPITATION >=10 0 2 1 0 0 0 0 0 0 0 1 3 7 DAYS WITH PRECIPITATION >= 5 0 5 6 2 1 0 0 0 0 0 4 3 21 DAYS WITH PRECIPITATION >= 1 2 6 8 2 1 0 0 0 0 0 8 6 33 DAYS WITH PRECIPITATION 4 12 11 6 4 0 1 0 0 0 10 6 54 GREATEST DAILY PRECIPITATION 2.4 40.0 10.0 6.0 6.0 0.0 0.1 0.0 0.0 0.0 48.0 48.0 48.0 DAY 17 3 1 7 11 ** 16 ** ** ** 22 12 DAY WITH THUNDER STORM 0 1 1 1 1 0 0 0 0 0 1 0 5 DAYS WITH SNOW OR SLEET 0 2 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH DUST 0 0 3 8 1 1 0 0 1 0 0 0 14 WIND DIRECTION (PREVAILING) 180 90 180 180 180 180 180 360 360 180 315 315 180 PREVAILING WIND SPEED(KNOTS) 10.2 7.5 11.3 17.0 11.1 8.0 7.0 4.0 4.2 8.1 10.3 10.7 10.5 PREVAILING WIND PERCENT 17.7 9.1 12.1 12.5 7.7 6.3 4.0 25.8 23.8 11.6 11.3 11.6 8.9 CALMS PERCENT OF WIND 48.8 72.0 63.3 52.5 66.5 78.3 82.7 30.2 28.6 53.5 55.3 58.1 58.3 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 185 155 150 155 2597 VECTOR WIND DIRECTION (MEAN) 213 189 197 209 215 201 193 292 289 245 231 235 229 VECTOR WIND MAGNITUDE(KNOTS) 2.3 0.9 1.7 3.0 1.0 0.8 0.4 2.1 1.9 1.3 1.0 1.6 1.2 WIND STEADINESES (MEAN %) 41.8 34.6 37.8 39.0 27.0 47.1 30.8 50.0 38.8 35.1 23.8 37.2 30.0 WIND SPEED (MEAN KNOTS) 5.5 2.6 4.5 7.7 3.7 1.7 1.3 4.2 4.9 3.7 4.2 4.3 4.0 FASTEST WIND DIRECTION 210 260 260 80 300 250 100 220 240 320 260 180 80 FASTEST WIND SPEED (KNOTS) 20 18 20 25 20 16 12 18 15 15 20 15 25 DAY 19 11 19 8 11 6 15 17 14 3 27 8 DAYS WITH SKY CLEAR (0-2)/8 22 9 11 11 21 28 31 31 30 31 19 16 260 DAYS WITH P.CLOUDY (3-6)/8 7 14 16 18 9 2 0 0 0 0 7 8 81 DAYS WITH CLOUDY (7-8)/8 2 6 4 1 1 0 0 0 0 0 4 7 25 DAYS WITH VISIBILITY =< 2 KM 0 1 0 8 0 0 0 0 0 0 0 0 9 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 885.4 882.5 882.0 879.9 882.3 877.7 874.8 873.9 879.2 884.2 885.3 886.0 881.1 MAX. QFE PRESSURE IN HPA 893.0 889.0 886.8 887.1 885.3 884.3 879.1 878.9 886.8 889.0 890.1 893.3 893.3 DAY-HOUR 30- 6 1- 0 15- 3 25- 6 10- 3 3- 6 21- 3 28- 6 29- 6 21- 6 9- 6 4- 6 MIN. QFE PRESSURE IN HPA 869.6 875.9 876.4 869.0 875.8 872.0 870.4 869.0 873.8 878.6 873.1 878.4 869.0 DAY-HOUR 18-15 10-12 1- 3 9-12 6-15 30-15 5-15 12-15 2-15 2-15 27-12 24-15 MEAN QNH PRESSURE IN HPA 1015.9 1012.6 1012.1 1009.7 1012.4 1007.4 1004.0 1003.1 1009.0 1014.6 1015.9 1016.6 1011.1 MAX. QNH PRESSURE IN HPA 1024.4 1020.0 1017.5 1017.8 1015.8 1014.7 1008.9 1008.7 1017.5 1020.0 1021.2 1024.8 1024.8 DAY-HOUR 30- 6 1- 0 15- 3 25- 6 10- 3 3- 6 21- 3 28- 6 29- 6 21- 6 9- 6 4- 6 MIN. QNH PRESSURE IN HPA 998.3 1005.3 1005.9 997.6 1005.2 1000.9 999.2 997.6 1003.0 1008.3 1002.2 1008.1 997.6 DAY-HOUR 18-15 10-12 1- 3 9-12 6-15 30-15 5-15 12-15 2-15 2-15 27-12 24-15 MEAN QFF PRESSURE IN HPA 1020.3 1012.9 1009.3 1005.6 1005.7 998.3 993.3 993.1 999.7 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1029.0 1023.1 1016.9 1015.6 1010.7 1007.2 999.5 1000.4 1010.4 ****** ****** ****** ****** DAY-HOUR 30- 6 1- 6 15- 3 25- 3 18- 3 2- 3 21- 3 28- 6 29- 3 **-** **-** **-** MIN. QFF PRESSURE IN HPA 998.7 1004.8 1003.3 993.8 998.8 991.8 988.1 986.1 992.8 ****** ****** ****** ****** DAY-HOUR 18-15 10- 9 19- 9 17-12 6-12 13-12 6-12 13-12 2-12 **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 885.8 883.1 882.4 880.5 882.9 878.8 875.7 874.5 ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 892.0 889.0 886.4 886.0 884.6 884.0 879.0 877.7 ****** ****** ****** ****** ****** DAY 31 1 15 26 10 4 22 28 ** ** ** ** MIN. QFE PRESSURE IN HPA 872.4 879.0 877.2 873.6 879.0 874.8 874.0 871.0 ****** ****** ****** ****** ****** DAY 19 10 1 9 7 30 5 13 ** ** ** ** MEAN QNH PRESSURE IN HPA 1016.4 1013.4 1012.6 1010.5 1013.1 1008.5 1005.1 1003.7 ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1023.3 1020.0 1017.0 1016.6 1015.0 1014.4 1008.8 1007.3 ****** ****** ****** ****** ****** DAY 31 1 15 26 10 4 22 28 ** ** ** ** MIN. QNH PRESSURE IN HPA 1001.4 1008.8 1006.8 1002.7 1008.8 1004.1 1003.2 999.8 ****** ****** ****** ****** ****** DAY 19 10 1 9 7 30 5 13 ** ** ** ** MEAN QFF PRESSURE IN HPA 1020.2 1013.3 1009.5 1006.0 1006.1 999.3 994.2 993.3 ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1026.7 1022.7 1015.4 1013.4 1008.3 1004.9 998.1 998.4 ****** ****** ****** ****** ****** DAY 31 1 15 24 3 1 22 28 ** ** ** ** MIN. QFF PRESSURE IN HPA 1003.9 1007.1 1005.9 996.9 1001.2 994.8 991.7 988.1 ****** ****** ****** ****** ****** DAY 19 10 12 22 7 29 13 13 ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 885.9 882.9 882.7 880.5 883.0 878.9 876.0 874.8 880.4 885.0 886.1 886.7 881.9 MAX. QFE PRESSURE IN HPA 892.1 888.6 886.8 887.0 885.3 884.2 879.1 878.1 886.0 888.6 889.6 892.8 892.8 DAY 30 1 15 25 10 2 21 28 29 21 9 4 MIN. QFE PRESSURE IN HPA 873.1 878.8 876.4 872.4 879.8 875.1 874.0 871.6 876.3 880.6 875.0 880.4 871.6 DAY 19 10 1 22 6 30 6 13 9 3 27 24 MEAN QNH PRESSURE IN HPA 1016.4 1013.2 1012.9 1010.4 1013.2 1008.7 1005.4 1004.1 1010.3 1015.5 1016.7 1017.4 1012.0 MAX. QNH PRESSURE IN HPA 1023.4 1019.5 1017.5 1017.7 1015.8 1014.6 1008.9 1007.8 1016.6 1019.5 1020.6 1024.2 1024.2 DAY 30 1 15 25 10 2 21 28 29 21 9 4 MIN. QNH PRESSURE IN HPA 1002.2 1008.6 1005.9 1001.4 1009.7 1004.4 1003.2 1000.5 1005.8 1010.6 1004.3 1010.3 1000.5 DAY 19 10 1 22 6 30 6 13 9 3 27 24 MEAN QFF PRESSURE IN HPA 1021.6 1014.2 1011.0 1007.2 1007.7 1000.9 995.7 995.1 1003.2 1011.2 1015.1 1019.1 1008.5 MAX. QFF PRESSURE IN HPA 1028.5 1023.0 1016.9 1015.6 1010.7 1007.2 999.5 1000.0 1010.4 1015.7 1020.8 1025.7 1028.5 DAY 30 1 15 25 18 2 21 28 29 29 29 4 MIN. QFF PRESSURE IN HPA 1005.7 1008.3 1005.8 996.5 1004.3 996.4 992.9 990.4 997.8 1004.1 1003.7 1010.6 990.4 DAY 19 10 12 22 7 27 6 13 3 3 27 24 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 886.7 883.9 883.1 880.9 883.3 879.0 875.9 875.2 880.8 885.5 886.8 887.4 882.4 MAX. QFE PRESSURE IN HPA 893.0 889.0 886.8 887.1 885.1 884.3 879.1 878.9 886.8 889.0 890.1 893.3 893.3 DAY 30 1 15 25 18 3 22 28 29 21 9 4 MIN. QFE PRESSURE IN HPA 875.0 879.2 877.6 872.6 879.3 875.0 873.6 871.7 876.8 880.9 875.0 881.6 871.7 DAY 19 10 1 9 6 29 25 17 9 3 27 24 MEAN QNH PRESSURE IN HPA 1017.3 1014.3 1013.4 1010.9 1013.6 1008.7 1005.3 1004.5 1010.8 1016.0 1017.5 1018.2 1012.6 MAX. QNH PRESSURE IN HPA 1024.4 1020.0 1017.5 1017.8 1015.6 1014.7 1008.9 1008.7 1017.5 1020.0 1021.2 1024.8 1024.8 DAY 30 1 15 25 18 3 22 28 29 21 9 4 MIN. QNH PRESSURE IN HPA 1004.3 1009.0 1007.2 1001.6 1009.1 1004.3 1002.7 1000.6 1006.3 1010.9 1004.3 1011.7 1000.6 DAY 19 10 1 9 6 29 25 17 9 3 27 24 MEAN QFF PRESSURE IN HPA 1022.6 1015.2 1011.0 1007.2 1007.0 999.9 994.7 994.9 ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1029.0 1023.1 1016.3 1014.8 1009.8 1006.1 998.2 1000.4 ****** ****** ****** ****** ****** DAY 30 1 15 25 2 3 22 28 ** ** ** ** MIN. QFF PRESSURE IN HPA 1009.0 1008.9 1005.4 998.0 1003.1 995.1 991.7 989.3 ****** ****** ****** ****** ****** DAY 18 10 12 9 6 29 25 13 ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 885.8 882.8 882.1 880.0 882.4 877.7 874.5 873.8 879.7 884.5 885.7 886.4 881.3 MAX. QFE PRESSURE IN HPA 892.5 886.5 885.6 885.6 884.6 883.0 878.1 877.6 885.0 887.9 888.8 891.2 892.5 DAY 30 1 15 25 26 3 21 28 29 17 9 3 MIN. QFE PRESSURE IN HPA 876.0 876.5 878.3 870.0 877.8 873.6 871.6 870.4 875.5 879.9 874.0 881.2 870.0 DAY 18 10 12 9 6 30 6 17 9 3 27 24 MEAN QNH PRESSURE IN HPA 1016.4 1013.1 1012.3 1009.8 1012.6 1007.3 1003.8 1003.0 1009.6 1014.9 1016.3 1017.1 1011.3 MAX. QNH PRESSURE IN HPA 1023.9 1017.2 1016.2 1016.2 1015.0 1013.2 1007.8 1007.2 1015.5 1018.7 1019.7 1022.4 1023.9 DAY 30 1 15 25 26 3 21 28 29 17 9 3 MIN. QNH PRESSURE IN HPA 1005.4 1006.0 1008.0 998.7 1007.4 1002.7 1000.5 999.2 1004.9 1009.8 1003.2 1011.2 998.7 DAY 18 10 12 9 6 30 6 17 9 3 27 24 MEAN QFF PRESSURE IN HPA 1020.0 1012.7 1008.7 1004.8 1004.8 997.2 992.1 992.2 ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1027.0 1017.6 1013.5 1011.5 1007.3 1003.2 996.6 997.8 ****** ****** ****** ****** ****** DAY 30 1 15 25 26 3 21 28 ** ** ** ** MIN. QFF PRESSURE IN HPA 1006.2 1004.8 1003.3 994.4 1000.0 992.8 988.2 987.0 ****** ****** ****** ****** ****** DAY 18 10 19 9 6 13 6 13 ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 884.1 881.3 881.2 878.8 881.5 876.7 873.7 872.7 878.4 883.1 884.3 884.9 880.0 MAX. QFE PRESSURE IN HPA 890.1 885.0 884.7 884.0 883.4 881.6 877.6 876.5 884.6 886.7 887.4 889.2 890.1 DAY 30 1 14 25 15 3 21 28 29 21 30 3 MIN. QFE PRESSURE IN HPA 872.0 875.9 876.8 869.0 876.3 872.5 870.9 869.4 874.0 879.0 873.1 878.7 869.0 DAY 18 10 6 9 6 30 4 13 9 2 27 31 MEAN QNH PRESSURE IN HPA 1014.5 1011.3 1011.2 1008.5 1011.6 1006.2 1002.9 1001.7 1008.1 1013.4 1014.7 1015.4 1009.9 MAX. QNH PRESSURE IN HPA 1021.2 1015.5 1015.1 1014.4 1013.7 1011.7 1007.2 1006.0 1015.0 1017.4 1018.2 1020.2 1021.2 DAY 30 1 14 25 15 3 21 28 29 21 30 3 MIN. QNH PRESSURE IN HPA 1000.9 1005.3 1006.3 997.6 1005.8 1001.5 999.7 998.0 1003.2 1008.8 1002.2 1008.4 997.6 DAY 18 10 6 9 6 30 4 13 9 2 27 31 MEAN QFF PRESSURE IN HPA 1018.1 1011.0 1007.8 1003.8 1004.3 996.7 991.8 991.1 ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1024.2 1015.6 1013.2 1010.3 1007.4 1001.7 996.3 996.7 ****** ****** ****** ****** ****** DAY 31 16 14 23 5 3 21 28 ** ** ** ** MIN. QFF PRESSURE IN HPA 1001.7 1005.0 1003.4 993.8 998.8 991.8 988.1 986.1 ****** ****** ****** ****** ****** DAY 18 10 19 17 6 13 6 13 ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 884.3 881.4 880.9 878.7 881.1 876.4 873.5 872.4 878.3 882.9 883.9 884.6 879.9 MAX. QFE PRESSURE IN HPA 890.0 884.5 884.8 884.3 883.7 881.5 877.0 876.4 884.6 886.3 886.8 888.9 890.0 DAY 30 16 14 25 24 3 21 28 29 21 30 2 MIN. QFE PRESSURE IN HPA 869.6 877.2 877.4 870.0 875.8 872.0 870.4 869.0 873.8 878.6 874.2 878.4 869.0 DAY 18 9 6 17 6 30 5 12 2 2 27 24 MEAN QNH PRESSURE IN HPA 1014.7 1011.5 1010.9 1008.4 1011.1 1005.8 1002.6 1001.4 1008.0 1013.2 1014.2 1015.1 1009.7 MAX. QNH PRESSURE IN HPA 1021.1 1014.9 1015.3 1014.7 1014.0 1011.6 1006.5 1005.9 1015.0 1016.9 1017.5 1019.8 1021.1 DAY 30 16 14 25 24 3 21 28 29 21 30 2 MIN. QNH PRESSURE IN HPA 998.3 1006.8 1007.0 998.7 1005.2 1000.9 999.2 997.6 1003.0 1008.3 1003.4 1008.1 997.6 DAY 18 9 6 17 6 30 5 12 2 2 27 24 MEAN QFF PRESSURE IN HPA 1019.7 1012.3 1008.8 1005.0 1005.4 997.8 992.7 992.3 1000.8 1008.8 1012.4 1016.6 1006.0 MAX. QFF PRESSURE IN HPA 1025.7 1016.4 1014.2 1011.3 1008.1 1003.4 996.7 997.7 1008.7 1013.2 1019.3 1021.4 1025.7 DAY 30 7 14 25 24 3 21 28 29 30 29 27 MIN. QFF PRESSURE IN HPA 998.7 1007.5 1004.4 994.4 999.7 992.8 989.0 987.1 994.1 1002.5 1002.7 1008.1 987.1 DAY 18 10 19 17 6 30 5 12 2 2 27 24 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 884.8 881.8 881.6 879.5 881.8 876.8 873.9 873.7 ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 890.6 886.1 884.8 885.0 884.2 882.1 878.0 877.3 ****** ****** ****** ****** ****** DAY 30 16 14 25 10 3 21 28 ** ** ** ** MIN. QFE PRESSURE IN HPA 871.0 877.6 877.3 873.0 877.0 872.7 871.0 870.4 ****** ****** ****** ****** ****** DAY 18 9 12 21 6 30 4 12 ** ** ** ** MEAN QNH PRESSURE IN HPA 1015.3 1011.9 1011.7 1009.3 1011.9 1006.4 1003.1 1002.9 ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1021.7 1016.7 1015.3 1015.5 1014.6 1012.2 1007.7 1006.9 ****** ****** ****** ****** ****** DAY 30 16 14 25 10 3 21 28 ** ** ** ** MIN. QNH PRESSURE IN HPA 999.8 1007.2 1006.9 1002.1 1006.5 1001.7 999.8 999.2 ****** ****** ****** ****** ****** DAY 18 9 12 21 6 30 4 12 ** ** ** ** MEAN QFF PRESSURE IN HPA 1020.4 1012.6 1009.1 1005.5 1005.2 997.5 992.4 993.2 ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1026.4 1018.7 1013.9 1011.9 1008.7 1003.3 996.8 998.7 ****** ****** ****** ****** ****** DAY 30 16 14 23 3 3 21 28 ** ** ** ** MIN. QFF PRESSURE IN HPA 1000.9 1007.4 1004.9 997.8 999.4 992.1 988.9 988.0 ****** ****** ****** ****** ****** DAY 18 10 12 21 6 30 5 12 ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 885.6 882.4 882.2 880.2 882.4 877.8 875.0 874.4 ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 891.3 886.6 885.7 885.7 884.2 883.0 878.6 877.8 ****** ****** ****** ****** ****** DAY 30 16 14 25 24 3 21 27 ** ** ** ** MIN. QFE PRESSURE IN HPA 872.2 878.0 878.0 873.6 878.2 874.0 872.6 871.0 ****** ****** ****** ****** ****** DAY 18 29 12 21 6 28 6 12 ** ** ** ** MEAN QNH PRESSURE IN HPA 1016.1 1012.6 1012.4 1010.1 1012.6 1007.5 1004.3 1003.6 ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1022.5 1017.3 1016.3 1016.3 1014.6 1013.2 1008.3 1007.4 ****** ****** ****** ****** ****** DAY 30 16 14 25 24 3 21 27 ** ** ** ** MIN. QNH PRESSURE IN HPA 1001.2 1007.7 1007.7 1002.7 1007.9 1003.2 1001.6 999.8 ****** ****** ****** ****** ****** DAY 18 29 12 21 6 28 6 12 ** ** ** ** MEAN QFF PRESSURE IN HPA 1019.8 1012.2 1008.8 1005.2 1004.9 997.5 992.8 993.0 ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1026.0 1017.4 1014.6 1011.9 1007.7 1003.7 997.0 998.1 ****** ****** ****** ****** ****** DAY 30 16 14 23 3 1 21 27 ** ** ** ** MIN. QFF PRESSURE IN HPA 1003.1 1007.0 1005.6 996.1 999.9 993.1 989.5 988.3 ****** ****** ****** ****** ****** DAY 18 9 10 21 6 28 6 12 ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 M MEANS AND EXTREMES FOR THE YEAR 1965 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.1 9.9 13.4 14.8 24.0 28.3 31.0 32.6 27.1 19.2 14.0 10.4 19.2 MINIMUN AIR TEMPERATURE (C) 1.1 3.1 6.7 7.2 14.1 17.1 20.1 21.2 15.7 12.2 7.8 4.2 10.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 2 3 10 21 3 0 0 0 39 DAYS WITH MINIMUM TEMP. <=-4 3 0 0 0 0 0 0 0 0 0 0 0 3 DAYS WITH FREEZING MIN.<= 0 12 6 0 0 0 0 0 0 0 0 0 2 20 TEMPERATURE RECORDS LOWEST(C) -5.0 -3.0 3.0 1.0 6.0 13.0 18.0 16.0 10.0 6.0 4.0 0.0 -5.0 DAY 16 3 4 6 4 19 2 28 22 28 13 22 MAXIMUM AIR TEMPERATURE (C) 9.1 15.6 19.0 20.5 30.7 35.3 38.1 41.6 35.8 25.0 19.8 16.3 25.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 1 21 30 31 31 29 6 0 0 149 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 17.0 22.0 25.0 30.0 36.0 38.0 40.0 45.0 40.0 31.0 26.0 22.0 45.0 DAY 28 28 7 27 20 3 15 6 2 1 5 7 DIF. BETWEEN (MAX.-MIN.) (C) 8.0 12.5 12.3 13.3 16.6 18.2 18.0 20.4 20.1 12.8 12.0 12.1 14.7 MEAN DAILY TEMP. (MDT) (C) 5.1 9.3 12.8 13.9 22.4 26.2 29.1 31.4 25.7 18.6 13.8 10.3 18.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 72.5 156.0 251.0 323.0 142.0 4.5 0.0 0.0 949.0 HEATING DEG. DAYS(BASE 18 0C) 400.5 242.5 160.0 130.0 11.0 0.0 0.0 0.0 0.0 35.5 126.0 240.0 1345.5 DEWPOINT (MEAN C) -0.5 1.7 3.9 4.8 7.2 6.9 7.2 7.9 5.9 5.4 5.7 1.8 4.8 MIXING RATIO (G/KG) 4.40 5.11 5.86 6.29 7.32 7.18 7.37 7.75 6.77 6.51 6.64 5.05 6.35 VAPOUR PRESSURE (HPA) 6.19 7.19 8.23 8.82 10.26 10.02 10.25 10.81 9.49 9.15 9.35 7.12 8.91 SATURATION DEF. (HPA) 2.92 5.55 7.82 9.13 21.75 30.56 37.27 41.49 29.09 14.39 7.29 6.08 17.78 RELATIVE HUMIDITY (MEAN %) 69 58 54 53 36 27 24 23 28 44 59 56 44 RELATIVE HUMIDITY (MAX. %) 78 68 66 66 52 40 35 32 41 57 71 67 56 RELATIVE HUMIDITY (MIN. %) 60 50 46 44 28 21 17 17 20 35 50 48 36 RELATIVE HUMIDITY (MEAN% 03UTC) 74 67 64 65 52 40 35 32 41 56 70 66 55 RELATIVE HUMIDITY (MEAN% 09UTC) 63 54 48 47 29 21 19 19 21 38 52 50 38 RELATIVE HUMIDITY (MEAN% 15UTC) 71 59 55 52 32 24 19 21 25 42 60 58 43 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 212.4 18.3 106.9 28.7 7.5 0.0 0.0 2.0 34.4 57.0 93.2 13.0 573.4 DAYS WITH PRECIPITATION >=10 5 1 2 1 0 0 0 0 1 1 3 0 14 DAYS WITH PRECIPITATION >= 5 8 1 3 2 1 0 0 0 1 2 3 2 23 DAYS WITH PRECIPITATION >= 1 10 3 7 6 2 0 0 1 4 7 10 3 53 DAYS WITH PRECIPITATION 12 4 9 10 4 0 0 1 5 11 10 3 69 GREATEST DAILY PRECIPITATION 71.0 16.0 53.4 12.0 6.0 0.0 0.0 2.0 26.0 36.0 30.0 6.0 71.0 DAY 9 5 2 19 1 ** ** 10 14 29 9 25 DAY WITH THUNDER STORM 1 0 1 0 0 0 0 0 1 2 1 0 6 DAYS WITH SNOW OR SLEET 6 0 0 0 0 0 0 0 0 0 0 0 6 DAYS WITH DUST 0 1 2 0 0 0 0 1 1 0 0 0 5 WIND DIRECTION (PREVAILING) 90 90 90 315 315 90 270 315 315 315 315 180 315 PREVAILING WIND SPEED(KNOTS) 8.9 10.0 11.1 12.4 13.1 10.1 6.8 9.1 11.4 10.9 8.7 10.4 11.1 PREVAILING WIND PERCENT 9.7 15.0 8.4 12.7 9.0 6.7 21.9 6.5 11.3 12.3 8.7 12.3 9.4 CALMS PERCENT OF WIND 70.3 41.4 63.9 48.0 65.2 70.7 54.2 71.6 61.3 61.9 71.3 51.0 61.0 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 185 191 210 236 182 173 277 234 269 250 187 241 228 VECTOR WIND MAGNITUDE(KNOTS) 0.4 1.8 1.2 1.7 0.5 1.0 2.0 0.6 1.1 0.9 0.6 1.8 0.9 WIND STEADINESES (MEAN %) 13.3 25.7 26.1 30.4 12.5 33.3 62.5 26.1 28.2 23.7 24.0 35.3 22.5 WIND SPEED (MEAN KNOTS) 3.0 7.0 4.6 5.6 4.0 3.0 3.2 2.3 3.9 3.8 2.5 5.1 4.0 FASTEST WIND DIRECTION 270 300 270 270 330 270 180 270 350 150 100 340 270 FASTEST WIND SPEED (KNOTS) 18 18 20 20 18 18 18 18 18 15 12 18 20 DAY 17 9 23 12 2 6 17 9 13 3 6 18 DAYS WITH SKY CLEAR (0-2)/8 10 15 14 13 23 28 30 26 24 2 17 17 219 DAYS WITH P.CLOUDY (3-6)/8 10 8 11 12 6 2 1 5 6 26 8 11 106 DAYS WITH CLOUDY (7-8)/8 11 5 6 5 2 0 0 0 0 3 5 3 40 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 0 0 0 0 0 0 0 0 0 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 881.7 882.5 883.2 881.7 882.3 879.0 874.8 878.8 881.7 883.9 885.8 885.0 881.7 MAX. QFE PRESSURE IN HPA 889.9 888.7 887.9 886.7 887.6 884.7 878.6 883.7 885.7 888.7 891.0 890.4 891.0 DAY-HOUR 16- 6 11- 6 10- 6 11- 6 6- 6 2- 6 6- 6 20- 6 15- 6 5- 6 29- 6 30- 6 MIN. QFE PRESSURE IN HPA 870.2 872.6 873.6 870.0 877.6 873.2 869.2 871.4 876.0 875.7 881.6 878.7 869.2 DAY-HOUR 10-15 9- 3 23- 6 3-15 2-15 26-12 28-15 1-15 3-15 25-15 23-15 20- 3 MEAN QNH PRESSURE IN HPA 1011.8 1012.7 1013.5 1011.8 1012.5 1008.8 1004.1 1008.5 1011.8 1014.2 1016.4 1015.5 1011.8 MAX. QNH PRESSURE IN HPA 1021.0 1019.6 1018.7 1017.4 1018.4 1015.1 1008.3 1014.0 1016.3 1019.6 1022.2 1021.5 1022.2 DAY-HOUR 16- 6 11- 6 10- 6 11- 6 6- 6 2- 6 6- 6 20- 6 15- 6 5- 6 29- 6 30- 6 MIN. QNH PRESSURE IN HPA 998.9 1001.6 1002.7 998.7 1007.2 1002.3 997.8 1000.3 1005.4 1005.1 1011.7 1008.4 997.8 DAY-HOUR 10-15 9- 3 23- 6 3-15 2-15 26-12 28-15 1-15 3-15 25-15 23-15 20- 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 881.7 882.8 883.8 882.0 883.0 879.9 875.6 879.3 882.4 884.7 886.6 885.7 882.3 MAX. QFE PRESSURE IN HPA 889.0 888.2 886.8 886.2 887.2 884.2 878.2 882.4 885.1 888.3 890.3 889.0 890.3 DAY 16 11 7 6 6 2 16 20 15 5 29 5 MIN. QFE PRESSURE IN HPA 870.7 872.6 874.6 873.3 878.4 875.4 871.1 874.0 878.6 880.4 884.3 878.7 870.7 DAY 11 9 23 4 2 24 28 1 3 26 9 20 MEAN QNH PRESSURE IN HPA 1011.8 1013.0 1014.1 1012.2 1013.2 1009.8 1004.9 1009.1 1012.5 1015.2 1017.2 1016.3 1012.4 MAX. QNH PRESSURE IN HPA 1020.0 1019.1 1017.5 1016.8 1017.9 1014.6 1007.9 1012.6 1015.6 1019.2 1021.4 1020.0 1021.4 DAY 16 11 7 6 6 2 16 20 15 5 29 5 MIN. QNH PRESSURE IN HPA 999.5 1001.6 1003.9 1002.4 1008.1 1004.7 999.9 1003.2 1008.3 1010.3 1014.7 1008.4 999.5 DAY 11 9 23 4 2 24 28 1 3 26 9 20 MEAN QFF PRESSURE IN HPA 1013.9 1013.2 1012.6 1009.9 1007.2 1002.0 995.3 999.4 1005.6 1010.9 1015.4 1016.3 1008.5 MAX. QFF PRESSURE IN HPA 1024.9 1021.0 1016.8 1018.3 1014.2 1006.8 999.5 1003.5 1009.8 1016.9 1020.6 1021.0 1024.9 DAY 16 11 16 6 5 2 14 18 26 30 29 22 MIN. QFF PRESSURE IN HPA 1001.1 999.9 1002.6 1001.3 1003.3 996.9 989.4 993.2 1000.6 1007.0 1011.3 1008.4 989.4 DAY 11 9 23 4 23 24 28 1 3 25 2 20 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 882.5 883.5 884.4 882.7 883.4 880.1 875.8 879.9 882.6 885.0 887.4 886.3 882.8 MAX. QFE PRESSURE IN HPA 889.9 888.7 887.9 886.7 887.6 884.7 878.6 883.7 885.7 888.7 891.0 890.4 891.0 DAY 16 11 10 11 6 2 6 20 15 5 29 30 MIN. QFE PRESSURE IN HPA 872.0 873.8 873.6 874.6 878.4 875.8 871.5 874.0 878.0 879.8 884.3 880.1 871.5 DAY 9 9 23 4 2 24 28 1 3 25 9 20 MEAN QNH PRESSURE IN HPA 1012.7 1013.8 1014.8 1012.9 1013.7 1010.0 1005.2 1009.8 1012.8 1015.5 1018.1 1016.9 1013.0 MAX. QNH PRESSURE IN HPA 1021.0 1019.6 1018.7 1017.4 1018.4 1015.1 1008.3 1014.0 1016.3 1019.6 1022.2 1021.5 1022.2 DAY 16 11 10 11 6 2 6 20 15 5 29 30 MIN. QNH PRESSURE IN HPA 1000.9 1003.0 1002.7 1003.9 1008.1 1005.2 1000.4 1003.2 1007.7 1009.7 1014.7 1010.0 1000.4 DAY 9 9 23 4 2 24 28 1 3 25 9 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 882.2 883.0 883.5 882.0 882.8 879.3 875.2 879.2 882.0 884.1 886.1 885.3 882.1 MAX. QFE PRESSURE IN HPA 889.3 888.1 887.0 886.1 887.6 884.0 877.9 882.4 885.0 887.8 889.6 889.6 889.6 DAY 16 1 7 10 9 1 16 19 26 29 29 30 MIN. QFE PRESSURE IN HPA 871.6 876.0 875.0 875.2 877.8 874.7 870.6 873.1 877.3 878.0 883.7 879.7 870.6 DAY 9 9 23 19 2 26 28 1 3 25 6 20 MEAN QNH PRESSURE IN HPA 1012.4 1013.3 1013.8 1012.1 1013.0 1009.2 1004.5 1009.0 1012.1 1014.5 1016.7 1015.8 1012.2 MAX. QNH PRESSURE IN HPA 1020.3 1019.0 1017.7 1016.7 1018.4 1014.4 1007.5 1012.6 1015.5 1018.6 1020.6 1020.6 1020.6 DAY 16 1 7 10 9 1 16 19 26 29 29 30 MIN. QNH PRESSURE IN HPA 1000.5 1005.4 1004.3 1004.5 1007.4 1004.0 999.4 1002.2 1006.9 1007.7 1014.0 1009.6 999.4 DAY 9 9 23 19 2 26 28 1 3 25 6 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 881.1 881.8 882.3 881.1 881.4 878.2 874.1 878.2 881.1 883.0 884.7 884.1 880.9 MAX. QFE PRESSURE IN HPA 888.1 886.6 885.4 885.6 884.6 883.0 877.0 881.4 883.8 887.2 887.8 888.3 888.3 DAY 16 1 16 6 4 1 5 19 26 29 19 30 MIN. QFE PRESSURE IN HPA 871.0 876.0 875.0 872.6 878.6 873.2 869.6 872.0 876.8 876.7 882.2 879.0 869.6 DAY 9 9 23 19 2 26 28 1 3 25 11 20 MEAN QNH PRESSURE IN HPA 1011.2 1012.0 1012.5 1011.1 1011.5 1007.8 1003.3 1007.9 1011.2 1013.3 1015.2 1014.5 1010.9 MAX. QNH PRESSURE IN HPA 1019.0 1017.3 1015.9 1016.2 1015.0 1013.2 1006.5 1011.5 1014.1 1017.9 1018.6 1019.2 1019.2 DAY 16 1 16 6 4 1 5 19 26 29 19 30 MIN. QNH PRESSURE IN HPA 999.8 1005.4 1004.3 1001.6 1008.3 1002.3 998.3 1000.9 1006.3 1006.2 1012.4 1008.8 998.3 DAY 9 9 23 19 2 26 28 1 3 25 11 20 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 880.9 881.6 882.2 880.6 880.9 877.6 873.6 877.5 880.6 882.5 884.2 883.7 880.5 MAX. QFE PRESSURE IN HPA 888.5 886.3 885.6 885.2 884.0 882.6 876.6 881.1 883.4 886.6 887.1 888.0 888.5 DAY 16 1 10 6 4 1 6 19 26 29 19 30 MIN. QFE PRESSURE IN HPA 870.2 875.0 875.0 870.0 877.6 873.2 869.2 871.4 876.0 875.7 881.6 879.0 869.2 DAY 10 22 23 3 2 26 28 1 3 25 23 24 MEAN QNH PRESSURE IN HPA 1010.8 1011.7 1012.4 1010.6 1010.9 1007.2 1002.8 1007.1 1010.5 1012.7 1014.6 1014.1 1010.4 MAX. QNH PRESSURE IN HPA 1019.4 1016.9 1016.2 1015.7 1014.4 1012.8 1006.1 1011.1 1013.7 1017.3 1017.8 1018.8 1019.4 DAY 16 1 10 6 4 1 6 19 26 29 19 30 MIN. QNH PRESSURE IN HPA 998.9 1004.3 1004.3 998.7 1007.2 1002.3 997.8 1000.3 1005.4 1005.1 1011.7 1008.8 997.8 DAY 10 22 23 3 2 26 28 1 3 25 23 24 MEAN QFF PRESSURE IN HPA 1012.7 1011.6 1010.6 1008.2 1004.7 999.2 993.0 997.3 1003.5 1008.4 1012.7 1013.9 1006.3 MAX. QFF PRESSURE IN HPA 1024.4 1018.8 1015.3 1016.1 1012.0 1005.1 997.4 1001.7 1007.8 1016.3 1016.7 1019.2 1024.4 DAY 16 2 1 6 4 1 6 28 26 29 29 30 MIN. QFF PRESSURE IN HPA 999.7 1004.2 1002.5 997.3 1000.3 994.4 987.3 990.0 997.8 1000.7 1008.7 1008.0 987.3 DAY 10 22 23 3 11 29 28 1 3 25 6 28 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 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 M MEANS AND EXTREMES FOR THE YEAR 1966 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 11.5 11.1 12.4 17.1 23.4 30.2 31.7 32.0 27.5 20.4 17.8 11.3 20.5 MINIMUN AIR TEMPERATURE (C) 5.7 5.4 5.5 9.1 13.6 17.1 19.9 20.0 16.7 12.4 8.4 4.9 11.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 1 0 12 13 2 0 0 0 28 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS LOWEST(C) 1.0 2.0 2.0 5.0 6.0 13.0 16.0 18.0 13.0 10.0 2.0 1.0 1.0 DAY 14 19 24 1 8 16 24 14 17 16 27 16 MAXIMUM AIR TEMPERATURE (C) 17.5 16.7 18.5 23.6 31.2 39.6 40.5 41.1 36.1 27.5 26.4 17.4 28.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 3 22 30 31 31 30 10 2 0 159 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 24.0 24.0 24.0 31.0 40.0 43.0 45.0 43.0 43.0 34.0 34.0 23.0 45.0 DAY 6 26 5 27 24 8 26 1 2 4 16 7 DIF. BETWEEN (MAX.-MIN.) (C) 11.8 11.3 13.0 14.5 17.6 22.5 20.6 21.1 19.4 15.1 18.0 12.5 16.4 MEAN DAILY TEMP. (MDT) (C) 11.6 11.1 12.0 16.4 22.4 28.3 30.2 30.5 26.4 19.9 17.4 11.1 19.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.5 67.0 219.5 285.5 295.0 162.0 19.0 2.0 0.0 1050.5 HEATING DEG. DAYS(BASE 18 0C) 197.5 194.5 185.0 64.0 3.5 0.0 0.0 0.0 0.0 10.5 35.0 212.5 902.5 DEWPOINT (MEAN C) 3.8 3.3 4.6 6.1 7.5 7.5 7.7 7.7 6.4 6.4 4.0 2.4 5.6 MIXING RATIO (G/KG) 5.84 5.61 6.14 6.78 7.47 7.50 7.64 7.61 6.92 6.96 5.84 5.25 6.63 VAPOUR PRESSURE (HPA) 8.23 7.89 8.63 9.51 10.48 10.48 10.63 10.59 9.70 9.77 8.24 7.38 9.30 SATURATION DEF. (HPA) 5.98 5.80 6.61 11.15 20.44 35.77 39.46 40.48 29.93 15.64 13.69 6.52 19.29 RELATIVE HUMIDITY (MEAN %) 61 60 62 51 39 26 24 23 28 43 42 56 43 RELATIVE HUMIDITY (MAX. %) 73 70 77 69 55 41 36 35 41 59 58 69 57 RELATIVE HUMIDITY (MIN. %) 51 52 50 39 29 18 17 16 20 33 30 45 33 RELATIVE HUMIDITY (MEAN% 03UTC) 70 66 75 66 54 41 36 35 41 57 58 67 56 RELATIVE HUMIDITY (MEAN% 09UTC) 55 54 56 43 34 20 20 18 22 37 32 47 37 RELATIVE HUMIDITY (MEAN% 15UTC) 61 62 60 49 35 22 21 21 25 43 44 58 42 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 81.2 53.4 67.5 33.3 14.6 0.0 0.0 0.0 0.7 35.4 0.0 23.6 309.7 DAYS WITH PRECIPITATION >=10 4 1 3 0 0 0 0 0 0 0 0 0 8 DAYS WITH PRECIPITATION >= 5 7 1 4 2 1 0 0 0 0 4 0 2 21 DAYS WITH PRECIPITATION >= 1 12 9 10 10 5 0 0 0 0 7 0 6 59 DAYS WITH PRECIPITATION 12 10 12 13 6 0 0 0 2 8 0 7 70 GREATEST DAILY PRECIPITATION 17.0 34.2 18.0 8.0 5.0 0.0 0.0 0.0 0.4 9.0 0.0 7.0 34.2 DAY 27 2 12 21 26 ** ** ** 30 14 ** 26 DAY WITH THUNDER STORM 1 0 1 1 2 0 0 0 0 1 0 1 7 DAYS WITH SNOW OR SLEET 0 0 1 0 0 0 0 0 0 0 0 0 1 DAYS WITH DUST 0 0 1 3 2 0 0 1 0 0 0 1 8 WIND DIRECTION (PREVAILING) 315 180 315 315 180 180 315 315 315 180 180 315 315 PREVAILING WIND SPEED(KNOTS) 10.6 9.9 11.0 13.6 9.5 9.2 9.8 8.3 9.6 8.3 7.6 10.9 10.5 PREVAILING WIND PERCENT 10.3 11.4 10.3 12.0 11.0 7.3 7.1 10.3 10.7 15.5 12.7 17.4 10.1 CALMS PERCENT OF WIND 66.5 67.1 57.4 58.0 63.9 74.7 64.5 61.9 60.0 52.3 47.3 45.2 59.8 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 276 209 240 256 230 223 207 224 215 217 239 247 234 VECTOR WIND MAGNITUDE(KNOTS) 0.6 1.0 1.3 2.3 1.6 0.9 0.8 0.9 0.9 1.5 2.1 2.0 1.3 WIND STEADINESES (MEAN %) 18.2 29.4 30.2 47.9 44.4 37.5 28.6 29.0 25.7 34.9 48.8 37.7 34.2 WIND SPEED (MEAN KNOTS) 3.3 3.4 4.3 4.8 3.6 2.4 2.8 3.1 3.5 4.3 4.3 5.3 3.8 FASTEST WIND DIRECTION 320 330 340 320 100 300 100 310 180 170 260 270 340 FASTEST WIND SPEED (KNOTS) 15 15 18 18 15 15 15 12 15 15 13 18 18 DAY 7 2 19 8 1 3 6 4 2 7 9 2 DAYS WITH SKY CLEAR (0-2)/8 10 7 11 12 18 30 31 31 29 18 20 13 230 DAYS WITH P.CLOUDY (3-6)/8 12 17 13 12 10 0 0 0 1 9 10 13 97 DAYS WITH CLOUDY (7-8)/8 9 4 7 6 3 0 0 0 0 4 0 5 38 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 0 0 0 0 0 0 0 0 0 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 885.4 883.0 883.2 882.8 883.5 880.3 876.0 876.7 881.3 883.5 886.2 882.6 882.0 MAX. QFE PRESSURE IN HPA 891.7 888.4 889.9 887.4 886.2 885.0 881.7 880.6 886.2 889.1 891.7 891.0 891.7 DAY-HOUR 1- 6 12- 6 3- 6 29- 6 2- 6 7- 6 11- 6 18- 6 16- 6 23- 6 2- 6 7- 6 MIN. QFE PRESSURE IN HPA 878.4 876.4 871.0 878.6 878.6 874.0 872.4 872.6 874.8 879.6 882.0 873.2 871.0 DAY-HOUR 30-12 2-15 19-15 8- 3 31-15 30-15 31-15 6-15 2-15 8-15 12-15 18-15 MEAN QNH PRESSURE IN HPA 1016.0 1013.3 1013.5 1013.0 1013.8 1010.3 1005.4 1006.2 1011.3 1013.8 1016.9 1012.8 1012.2 MAX. QNH PRESSURE IN HPA 1023.0 1019.3 1021.0 1018.2 1016.8 1015.5 1011.8 1010.6 1016.8 1020.1 1023.0 1022.2 1023.0 DAY-HOUR 1- 6 12- 6 3- 6 29- 6 2- 6 7- 6 11- 6 18- 6 16- 6 23- 6 2- 6 7- 6 MIN. QNH PRESSURE IN HPA 1008.1 1005.9 999.8 1008.3 1008.3 1003.2 1001.4 1001.6 1004.1 1009.4 1012.1 1002.3 999.8 DAY-HOUR 30-12 2-15 19-15 8- 3 31-15 30-15 31-15 6-15 2-15 8-15 12-15 18-15 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 886.3 883.7 883.6 883.0 884.0 880.8 876.6 877.4 882.4 884.4 887.3 883.2 882.7 MAX. QFE PRESSURE IN HPA 890.8 888.2 888.7 886.8 886.2 884.2 881.0 880.1 885.8 888.6 891.4 890.3 891.4 DAY 1 12 3 27 3 7 11 17 16 23 2 7 MIN. QFE PRESSURE IN HPA 881.7 877.0 874.2 878.6 879.0 876.1 873.0 873.8 877.4 881.3 884.7 874.1 873.0 DAY 30 2 20 8 31 29 17 1 2 26 12 18 MEAN QNH PRESSURE IN HPA 1017.0 1014.0 1013.9 1013.2 1014.3 1010.8 1006.1 1007.0 1012.5 1014.8 1018.1 1013.5 1012.9 MAX. QNH PRESSURE IN HPA 1022.0 1019.1 1019.6 1017.5 1016.8 1014.6 1011.0 1010.0 1016.4 1019.5 1022.6 1021.4 1022.6 DAY 1 12 3 27 3 7 11 17 16 23 2 7 MIN. QNH PRESSURE IN HPA 1011.8 1006.5 1003.4 1008.3 1008.8 1005.5 1002.1 1003.0 1007.0 1011.3 1015.1 1003.3 1002.1 DAY 30 2 20 8 31 29 17 1 2 26 12 18 MEAN QFF PRESSURE IN HPA 1016.1 1013.3 1012.8 1010.1 1008.6 1002.4 996.8 997.7 1005.1 1010.3 1015.4 1013.0 1008.5 MAX. QFF PRESSURE IN HPA 1022.3 1018.4 1019.7 1015.6 1012.0 1006.5 1002.2 1001.3 1010.2 1016.7 1020.8 1021.4 1022.3 DAY 1 12 3 1 10 3 11 19 30 23 27 7 MIN. QFF PRESSURE IN HPA 1009.0 1005.0 1002.8 1005.0 1001.2 996.7 993.0 992.7 997.4 1006.9 1011.8 1000.2 992.7 DAY 30 2 20 8 31 29 27 1 2 8 11 18 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 886.7 884.0 884.1 883.5 884.3 881.2 876.8 877.7 882.5 884.7 887.6 883.5 883.1 MAX. QFE PRESSURE IN HPA 891.7 888.4 889.9 887.4 886.2 885.0 881.7 880.6 886.2 889.1 891.7 891.0 891.7 DAY 1 12 3 29 2 7 11 18 16 23 2 7 MIN. QFE PRESSURE IN HPA 880.7 877.0 875.4 879.0 879.6 875.6 873.6 874.0 877.8 882.1 884.8 874.1 873.6 DAY 30 2 20 8 31 29 17 6 2 2 11 18 MEAN QNH PRESSURE IN HPA 1017.4 1014.3 1014.5 1013.8 1014.7 1011.3 1006.4 1007.4 1012.7 1015.1 1018.4 1013.8 1013.3 MAX. QNH PRESSURE IN HPA 1023.0 1019.3 1021.0 1018.2 1016.8 1015.5 1011.8 1010.6 1016.8 1020.1 1023.0 1022.2 1023.0 DAY 1 12 3 29 2 7 11 18 16 23 2 7 MIN. QNH PRESSURE IN HPA 1010.7 1006.5 1004.7 1008.8 1009.4 1005.0 1002.7 1003.2 1007.4 1012.2 1015.3 1003.3 1002.7 DAY 30 2 20 8 31 29 17 6 2 2 11 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 885.7 883.4 883.7 883.0 883.7 880.7 876.2 876.9 881.5 883.8 886.5 882.9 882.3 MAX. QFE PRESSURE IN HPA 890.6 887.2 889.0 886.0 886.2 885.0 881.3 880.4 885.0 887.9 890.4 889.8 890.6 DAY 1 12 3 1 3 7 11 17 16 23 2 7 MIN. QFE PRESSURE IN HPA 880.0 877.0 875.4 879.0 879.6 875.0 873.6 873.4 876.2 881.3 883.9 874.1 873.4 DAY 30 2 20 8 31 29 17 6 2 8 12 18 MEAN QNH PRESSURE IN HPA 1016.3 1013.7 1014.0 1013.3 1014.0 1010.7 1005.7 1006.4 1011.5 1014.2 1017.1 1013.1 1012.5 MAX. QNH PRESSURE IN HPA 1021.7 1017.9 1020.0 1016.6 1016.8 1015.5 1011.3 1010.3 1015.5 1018.7 1021.5 1020.9 1021.7 DAY 1 12 3 1 3 7 11 17 16 23 2 7 MIN. QNH PRESSURE IN HPA 1009.9 1006.5 1004.7 1008.8 1009.4 1004.3 1002.7 1002.5 1005.6 1011.3 1014.3 1003.3 1002.5 DAY 30 2 20 8 31 29 17 6 2 8 12 18 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 884.5 882.3 882.7 882.3 882.9 879.8 875.5 876.0 880.4 882.7 885.3 881.9 881.4 MAX. QFE PRESSURE IN HPA 888.6 886.0 887.9 885.2 884.6 883.8 880.0 878.6 884.2 886.2 888.7 888.0 888.7 DAY 1 24 3 1 3 7 11 17 16 22 2 7 MIN. QFE PRESSURE IN HPA 878.4 877.0 873.6 879.0 879.6 874.4 873.0 872.9 875.2 880.1 883.0 873.6 872.9 DAY 30 2 20 8 31 29 24 6 2 8 12 18 MEAN QNH PRESSURE IN HPA 1014.9 1012.4 1012.9 1012.5 1013.2 1009.7 1004.8 1005.4 1010.3 1012.9 1015.8 1012.0 1011.4 MAX. QNH PRESSURE IN HPA 1019.5 1016.6 1018.7 1015.7 1015.0 1014.1 1009.9 1008.3 1014.6 1016.8 1019.6 1018.8 1019.6 DAY 1 24 3 1 3 7 11 17 16 22 2 7 MIN. QNH PRESSURE IN HPA 1008.1 1006.5 1002.7 1008.8 1009.4 1003.6 1002.1 1002.0 1004.5 1010.0 1013.2 1002.7 1002.0 DAY 30 2 20 8 31 29 24 6 2 8 12 18 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 884.0 881.9 882.1 882.0 882.4 879.2 875.0 875.3 879.8 882.0 884.5 881.5 880.8 MAX. QFE PRESSURE IN HPA 887.4 886.0 887.3 884.8 884.3 883.2 879.6 878.2 884.2 885.0 887.1 887.4 887.4 DAY 1 24 3 1 13 7 11 17 16 23 2 7 MIN. QFE PRESSURE IN HPA 878.4 876.4 871.0 879.0 878.6 874.0 872.4 872.6 874.8 879.6 882.0 873.2 871.0 DAY 30 2 19 8 31 30 31 6 2 8 12 18 MEAN QNH PRESSURE IN HPA 1014.4 1012.1 1012.2 1012.1 1012.6 1009.0 1004.3 1004.7 1009.6 1012.2 1015.0 1011.5 1010.8 MAX. QNH PRESSURE IN HPA 1018.2 1016.6 1018.1 1015.3 1014.7 1013.5 1009.4 1007.9 1014.6 1015.5 1017.8 1018.2 1018.2 DAY 1 24 3 1 13 7 11 17 16 23 2 7 MIN. QNH PRESSURE IN HPA 1008.1 1005.9 999.8 1008.8 1008.3 1003.2 1001.4 1001.6 1004.1 1009.4 1012.1 1002.3 999.8 DAY 30 2 19 8 31 30 31 6 2 8 12 18 MEAN QFF PRESSURE IN HPA 1013.4 1011.2 1011.0 1008.8 1006.7 1000.5 994.9 995.1 1002.1 1007.6 1012.2 1010.9 1006.2 MAX. QFF PRESSURE IN HPA 1018.4 1015.9 1016.5 1013.7 1009.9 1004.5 1000.1 998.1 1007.6 1011.5 1017.2 1018.0 1018.4 DAY 16 24 3 1 9 7 11 19 16 23 27 7 MIN. QFF PRESSURE IN HPA 1005.0 1004.9 997.6 1005.2 1000.4 994.0 990.8 991.9 994.1 1003.1 1008.1 999.6 990.8 DAY 30 2 19 16 31 29 31 8 2 8 8 18 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 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 M MEANS AND EXTREMES FOR THE YEAR 1967 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 8.6 7.2 11.9 16.8 22.3 28.3 33.0 32.6 28.3 21.7 15.2 8.6 19.5 MINIMUN AIR TEMPERATURE (C) 2.5 2.3 4.3 8.8 13.9 17.0 21.1 20.5 16.8 12.8 9.8 3.3 11.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 5 18 18 0 0 0 0 41 DAYS WITH MINIMUM TEMP. <=-4 1 0 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH FREEZING MIN.<= 0 5 6 4 1 0 0 0 0 0 0 0 6 22 TEMPERATURE RECORDS LOWEST(C) -4.0 -3.0 0.0 0.0 8.0 12.0 18.0 19.0 13.0 9.0 2.0 -3.0 -4.0 DAY 23 3 2 2 1 7 20 14 22 24 29 24 MAXIMUM AIR TEMPERATURE (C) 14.6 12.1 18.2 22.8 29.2 36.0 41.9 42.0 36.9 29.3 20.6 13.9 26.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 15 29 31 31 30 20 2 0 158 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 19.0 18.0 24.0 28.0 38.0 41.0 46.0 45.0 41.0 33.0 30.0 21.0 46.0 DAY 14 10 4 23 24 25 15 22 3 5 1 16 DIF. BETWEEN (MAX.-MIN.) (C) 12.1 9.8 13.9 14.0 15.3 19.0 20.8 21.5 20.1 16.5 10.8 10.6 15.4 MEAN DAILY TEMP. (MDT) (C) 8.6 7.2 11.2 15.8 21.5 26.5 31.5 31.2 26.8 21.0 15.2 8.6 18.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 49.0 166.0 325.5 317.5 174.5 20.5 1.5 0.0 1054.5 HEATING DEG. DAYS(BASE 18 0C) 292.5 302.5 210.0 70.0 6.5 0.0 0.0 0.0 0.0 1.0 104.5 291.5 1278.5 DEWPOINT (MEAN C) 1.1 1.6 3.1 4.8 7.7 7.1 8.0 7.4 6.4 5.2 5.5 2.4 5.0 MIXING RATIO (G/KG) 4.81 4.96 5.57 6.18 7.66 7.30 7.79 7.49 6.94 6.32 6.51 5.25 6.40 VAPOUR PRESSURE (HPA) 6.77 6.96 7.80 8.66 10.73 10.19 10.81 10.41 9.71 8.91 9.15 7.39 8.96 SATURATION DEF. (HPA) 4.90 3.53 6.91 11.45 17.93 30.86 43.08 42.41 31.40 18.57 9.15 4.31 18.71 RELATIVE HUMIDITY (MEAN %) 61 69 57 47 42 28 22 22 26 36 55 67 44 RELATIVE HUMIDITY (MAX. %) 70 81 74 64 58 41 33 33 40 51 67 79 58 RELATIVE HUMIDITY (MIN. %) 51 59 45 38 32 21 16 15 19 26 45 55 35 RELATIVE HUMIDITY (MEAN% 03UTC) 67 76 71 62 55 41 33 33 40 51 64 76 56 RELATIVE HUMIDITY (MEAN% 09UTC) 54 64 50 42 37 22 18 17 20 28 48 58 38 RELATIVE HUMIDITY (MEAN% 15UTC) 65 70 58 45 40 25 20 20 25 35 56 68 44 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 35.0 111.4 44.6 51.7 120.4 0.0 0.0 0.0 0.0 35.3 103.9 48.0 550.3 DAYS WITH PRECIPITATION >=10 1 2 1 1 6 0 0 0 0 1 4 2 18 DAYS WITH PRECIPITATION >= 5 4 6 4 4 8 0 0 0 0 4 8 5 43 DAYS WITH PRECIPITATION >= 1 7 15 9 8 10 0 0 0 0 5 14 7 75 DAYS WITH PRECIPITATION 7 16 12 11 11 0 0 0 0 5 15 7 84 GREATEST DAILY PRECIPITATION 14.0 36.0 10.0 24.0 26.0 0.0 0.0 0.0 0.0 15.0 23.0 14.0 36.0 DAY 18 12 8 5 14 ** ** ** ** 12 12 23 DAY WITH THUNDER STORM 0 0 1 0 3 0 0 0 0 1 2 0 7 DAYS WITH SNOW OR SLEET 1 2 1 0 0 0 0 0 0 0 0 0 4 DAYS WITH DUST 0 0 2 4 2 1 4 0 0 0 0 0 13 WIND DIRECTION (PREVAILING) 315 315 315 315 315 315 180 90 315 180 180 180 315 PREVAILING WIND SPEED(KNOTS) 10.1 11.2 13.5 13.6 13.7 9.0 7.0 8.3 8.9 8.3 8.8 7.7 11.3 PREVAILING WIND PERCENT 13.5 12.1 11.6 18.0 9.0 8.0 5.2 3.9 5.3 8.4 10.7 9.0 8.0 CALMS PERCENT OF WIND 61.9 60.0 70.3 58.7 77.4 75.3 83.2 87.1 80.0 76.8 72.7 72.3 73.1 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 263 256 269 261 277 216 154 165 180 168 166 171 231 VECTOR WIND MAGNITUDE(KNOTS) 1.6 1.6 1.6 2.4 0.9 0.7 0.6 0.3 0.5 1.1 1.2 1.0 0.8 WIND STEADINESES (MEAN %) 44.4 42.1 47.1 47.1 34.6 30.4 46.2 25.0 29.4 52.4 52.2 45.5 30.8 WIND SPEED (MEAN KNOTS) 3.6 3.8 3.4 5.1 2.6 2.3 1.3 1.2 1.7 2.1 2.3 2.2 2.6 FASTEST WIND DIRECTION 300 330 300 300 300 270 320 300 100 300 200 180 330 FASTEST WIND SPEED (KNOTS) 15 18 18 18 18 15 12 15 10 12 12 10 18 DAY 17 24 8 20 4 5 11 16 1 2 8 1 DAYS WITH SKY CLEAR (0-2)/8 16 9 13 10 14 30 31 31 30 19 11 14 228 DAYS WITH P.CLOUDY (3-6)/8 8 9 14 15 13 0 0 0 0 9 10 12 90 DAYS WITH CLOUDY (7-8)/8 7 10 4 5 4 0 0 0 0 3 9 5 47 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 0 0 0 0 0 0 0 0 0 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 883.6 880.7 879.2 880.1 881.9 879.0 874.4 875.4 880.1 885.3 884.4 883.6 880.6 MAX. QFE PRESSURE IN HPA 890.0 885.2 887.0 885.0 886.6 884.0 880.0 879.6 884.6 891.0 889.0 889.0 891.0 DAY-HOUR 14- 6 4- 6 3- 6 7- 6 2- 6 1- 6 14- 6 16- 6 29- 6 30- 6 13- 6 15- 6 MIN. QFE PRESSURE IN HPA 877.0 873.1 872.7 873.0 876.0 872.0 869.2 871.0 875.0 879.0 878.0 873.0 869.2 DAY-HOUR 30-12 24-15 27-12 25-12 6-12 28-15 26-15 19-15 7-12 2-15 19-12 23-12 MEAN QNH PRESSURE IN HPA 1014.0 1010.7 1009.0 1010.0 1012.1 1008.7 1003.6 1004.7 1010.0 1015.9 1014.8 1013.9 1010.6 MAX. QNH PRESSURE IN HPA 1021.1 1015.7 1017.7 1015.5 1017.3 1014.4 1009.9 1009.4 1015.0 1022.2 1020.0 1020.0 1022.2 DAY-HOUR 14- 6 4- 6 3- 6 7- 6 2- 6 1- 6 14- 6 16- 6 29- 6 30- 6 13- 6 15- 6 MIN. QNH PRESSURE IN HPA 1006.5 1002.2 1001.7 1002.1 1005.4 1000.9 997.8 999.8 1004.3 1008.8 1007.7 1002.1 997.8 DAY-HOUR 30-12 24-15 27-12 25-12 6-12 28-15 26-15 19-15 7-12 2-15 19-12 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 884.1 881.0 879.7 880.5 882.4 879.2 874.9 875.8 880.5 886.0 884.8 884.0 881.1 MAX. QFE PRESSURE IN HPA 888.7 884.6 886.4 884.2 886.0 883.3 879.4 879.0 884.1 890.0 888.2 889.0 890.0 DAY 14 4 3 7 2 2 15 16 29 29 13 16 MIN. QFE PRESSURE IN HPA 877.4 875.4 873.0 873.2 878.0 873.0 870.0 872.0 877.0 880.0 878.0 874.0 870.0 DAY 21 24 25 25 6 28 26 19 7 2 20 23 MEAN QNH PRESSURE IN HPA 1014.5 1011.0 1009.6 1010.4 1012.5 1009.0 1004.2 1005.2 1010.4 1016.6 1015.2 1014.4 1011.1 MAX. QNH PRESSURE IN HPA 1019.6 1015.0 1017.0 1014.6 1016.6 1013.6 1009.2 1008.8 1014.5 1021.1 1019.1 1020.0 1021.1 DAY 14 4 3 7 2 2 15 16 29 29 13 16 MIN. QNH PRESSURE IN HPA 1007.0 1004.7 1002.1 1002.3 1007.7 1002.1 998.7 1000.9 1006.5 1009.9 1007.7 1003.2 998.7 DAY 21 24 25 25 6 28 26 19 7 2 20 23 MEAN QFF PRESSURE IN HPA 1015.3 1012.2 1009.0 1007.4 1007.1 1001.4 994.4 995.6 1003.1 1011.8 1012.5 1015.0 1007.1 MAX. QFF PRESSURE IN HPA 1021.9 1017.5 1017.5 1013.5 1012.8 1007.6 999.0 1000.4 1008.1 1016.6 1017.0 1020.0 1021.9 DAY 23 4 3 3 2 2 22 29 29 29 29 13 MIN. QFF PRESSURE IN HPA 1005.9 1003.7 1000.9 997.3 1001.7 993.1 988.7 991.4 998.5 1003.2 1004.9 1003.8 988.7 DAY 30 24 27 25 31 28 26 19 7 2 20 23 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 884.5 881.5 880.2 881.0 882.8 879.7 875.0 876.1 880.8 886.4 885.3 884.6 881.5 MAX. QFE PRESSURE IN HPA 890.0 885.2 887.0 885.0 886.6 884.0 880.0 879.6 884.6 891.0 889.0 889.0 891.0 DAY 14 4 3 7 2 1 14 16 29 30 13 15 MIN. QFE PRESSURE IN HPA 877.6 874.6 873.0 874.0 877.6 873.0 870.0 872.0 876.6 880.4 878.6 874.0 870.0 DAY 30 24 25 26 6 28 26 19 7 2 20 23 MEAN QNH PRESSURE IN HPA 1015.0 1011.6 1010.2 1011.0 1013.0 1009.6 1004.3 1005.5 1010.7 1017.1 1015.8 1015.0 1011.6 MAX. QNH PRESSURE IN HPA 1021.1 1015.7 1017.7 1015.5 1017.3 1014.4 1009.9 1009.4 1015.0 1022.2 1020.0 1020.0 1022.2 DAY 14 4 3 7 2 1 14 16 29 30 13 15 MIN. QNH PRESSURE IN HPA 1007.2 1003.9 1002.1 1003.2 1007.2 1002.1 998.7 1000.9 1006.1 1010.3 1008.3 1003.2 998.7 DAY 30 24 25 26 6 28 26 19 7 2 20 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 883.9 881.2 879.5 880.4 882.2 879.3 874.5 875.6 880.3 885.5 884.6 883.8 880.9 MAX. QFE PRESSURE IN HPA 888.8 885.0 885.8 883.8 885.8 883.6 879.3 878.4 884.0 889.8 888.0 888.0 889.8 DAY 14 27 3 3 2 1 22 16 29 30 6 15 MIN. QFE PRESSURE IN HPA 877.2 873.6 873.0 874.0 877.0 873.0 870.0 872.0 876.1 880.0 879.0 874.0 870.0 DAY 21 24 25 25 6 28 26 19 7 1 19 23 MEAN QNH PRESSURE IN HPA 1014.2 1011.2 1009.4 1010.4 1012.3 1009.1 1003.8 1005.0 1010.2 1016.1 1015.0 1014.2 1010.9 MAX. QNH PRESSURE IN HPA 1019.7 1015.5 1016.4 1014.1 1016.4 1013.9 1009.1 1008.1 1014.4 1020.9 1018.8 1018.8 1020.9 DAY 14 27 3 3 2 1 22 16 29 30 6 15 MIN. QNH PRESSURE IN HPA 1006.8 1002.7 1002.1 1003.2 1006.5 1002.1 998.7 1000.9 1005.5 1009.9 1008.8 1003.2 998.7 DAY 21 24 25 25 6 28 26 19 7 1 19 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 883.1 880.3 878.6 879.5 881.5 878.6 873.9 874.9 879.6 884.7 883.8 883.0 880.1 MAX. QFE PRESSURE IN HPA 887.0 885.0 885.2 883.0 885.0 883.0 878.9 878.0 883.3 888.2 888.0 887.2 888.2 DAY 14 27 3 3 2 1 22 16 29 29 6 15 MIN. QFE PRESSURE IN HPA 877.0 873.6 872.7 873.0 876.0 872.4 869.6 871.7 875.0 879.4 878.0 873.0 869.6 DAY 30 24 27 25 6 28 26 19 7 2 19 23 MEAN QNH PRESSURE IN HPA 1013.3 1010.2 1008.3 1009.3 1011.6 1008.4 1003.1 1004.2 1009.5 1015.2 1014.2 1013.2 1010.0 MAX. QNH PRESSURE IN HPA 1017.7 1015.5 1015.7 1013.2 1015.5 1013.2 1008.7 1007.7 1013.6 1019.1 1018.8 1017.9 1019.1 DAY 14 27 3 3 2 1 22 16 29 29 6 15 MIN. QNH PRESSURE IN HPA 1006.5 1002.7 1001.7 1002.1 1005.4 1001.4 998.3 1000.6 1004.3 1009.2 1007.7 1002.1 998.3 DAY 30 24 27 25 6 28 26 19 7 2 19 23 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 882.6 879.8 877.9 878.9 881.0 878.1 873.5 874.4 879.2 884.1 883.4 882.5 879.6 MAX. QFE PRESSURE IN HPA 886.0 884.0 884.8 882.6 884.7 882.6 878.6 878.0 883.0 887.0 886.4 886.0 887.0 DAY 6 27 3 12 2 1 22 16 22 27 6 15 MIN. QFE PRESSURE IN HPA 877.0 873.1 872.7 873.0 876.0 872.0 869.2 871.0 875.0 879.0 878.0 873.0 869.2 DAY 30 24 27 25 6 28 26 19 7 2 19 23 MEAN QNH PRESSURE IN HPA 1012.8 1009.6 1007.6 1008.7 1011.0 1007.8 1002.6 1003.7 1009.0 1014.5 1013.7 1012.6 1009.5 MAX. QNH PRESSURE IN HPA 1016.6 1014.4 1015.3 1012.8 1015.1 1012.8 1008.3 1007.7 1013.2 1017.7 1017.0 1016.6 1017.7 DAY 6 27 3 12 2 1 22 16 22 27 6 15 MIN. QNH PRESSURE IN HPA 1006.5 1002.2 1001.7 1002.1 1005.4 1000.9 997.8 999.8 1004.3 1008.8 1007.7 1002.1 997.8 DAY 30 24 27 25 6 28 26 19 7 2 19 23 MEAN QFF PRESSURE IN HPA 1013.5 1010.6 1006.8 1005.5 1005.3 1000.0 992.7 994.0 1001.6 1009.6 1010.9 1013.1 1005.3 MAX. QFF PRESSURE IN HPA 1019.0 1015.7 1015.3 1011.3 1010.5 1006.8 997.6 998.1 1007.6 1013.1 1015.0 1017.0 1019.0 DAY 23 27 3 2 2 1 22 29 22 23 29 29 MIN. QFF PRESSURE IN HPA 1005.9 1000.7 1000.6 997.0 1000.6 991.8 987.7 990.2 996.3 1002.0 1005.0 1003.4 987.7 DAY 30 24 25 25 29 28 26 19 7 2 19 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 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 M MEANS AND EXTREMES FOR THE YEAR 1968 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 7.1 5.8 13.0 15.8 20.7 27.8 31.7 29.7 25.6 21.0 14.0 8.8 18.4 MINIMUN AIR TEMPERATURE (C) 2.7 0.1 6.5 8.4 12.9 16.3 20.5 18.1 14.8 11.7 9.0 4.8 10.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 14 0 1 0 0 0 15 DAYS WITH MINIMUM TEMP. <=-4 0 3 0 0 0 0 0 0 0 0 0 0 3 DAYS WITH FREEZING MIN.<= 0 8 14 0 0 0 0 0 0 0 0 0 0 22 TEMPERATURE RECORDS LOWEST(C) -3.0 -6.0 2.0 4.0 8.0 14.0 16.0 15.0 11.0 8.0 6.0 1.0 -6.0 DAY 19 7 24 3 2 9 1 19 29 30 12 21 MAXIMUM AIR TEMPERATURE (C) 11.5 11.1 19.1 22.3 27.2 35.8 39.9 38.4 34.2 28.5 19.1 13.1 25.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 3 7 30 31 31 30 16 0 0 148 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 16.0 23.0 23.0 30.0 32.0 41.0 42.0 41.0 38.0 33.0 24.0 16.0 42.0 DAY 14 29 27 13 24 28 8 15 4 1 9 3 DIF. BETWEEN (MAX.-MIN.) (C) 8.8 11.0 12.6 13.9 14.3 19.5 19.4 20.3 19.4 16.8 10.1 8.3 14.5 MEAN DAILY TEMP. (MDT) (C) 7.1 5.6 12.8 15.4 20.0 26.1 30.2 28.3 24.5 20.1 14.0 9.0 17.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 10.0 152.5 285.5 225.0 105.0 18.5 0.0 0.0 796.5 HEATING DEG. DAYS(BASE 18 0C) 338.0 359.0 161.0 90.5 3.5 0.0 0.0 0.0 0.0 12.0 118.5 280.5 1363.0 DEWPOINT (MEAN C) 2.3 1.5 4.9 6.7 7.9 8.3 8.5 7.4 5.9 4.9 5.6 3.2 5.6 MIXING RATIO (G/KG) 5.21 4.92 6.23 7.10 7.71 7.98 8.14 7.55 6.73 6.31 6.53 5.54 6.66 VAPOUR PRESSURE (HPA) 7.32 6.92 8.73 9.94 10.80 11.12 11.30 10.51 9.44 8.89 9.21 7.80 9.33 SATURATION DEF. (HPA) 3.05 2.86 6.84 9.33 14.69 28.73 38.47 34.30 25.79 17.91 7.29 3.76 16.09 RELATIVE HUMIDITY (MEAN %) 73 76 60 59 46 30 25 26 30 38 59 69 49 RELATIVE HUMIDITY (MAX. %) 85 88 78 77 61 43 37 39 43 55 73 82 63 RELATIVE HUMIDITY (MIN. %) 62 65 47 46 35 24 18 19 20 26 48 58 39 RELATIVE HUMIDITY (MEAN% 03UTC) 81 88 76 74 58 43 37 38 43 53 70 81 62 RELATIVE HUMIDITY (MEAN% 09UTC) 66 69 50 50 39 26 21 21 25 31 53 63 43 RELATIVE HUMIDITY (MEAN% 15UTC) 75 74 56 59 45 26 21 22 26 37 56 69 47 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 62.5 58.0 57.0 145.0 81.2 0.0 0.0 0.0 0.0 20.0 92.2 64.0 579.9 DAYS WITH PRECIPITATION >=10 2 0 3 7 3 0 0 0 0 0 5 3 23 DAYS WITH PRECIPITATION >= 5 4 6 4 11 4 0 0 0 0 2 6 7 44 DAYS WITH PRECIPITATION >= 1 10 10 9 16 7 0 0 0 0 4 9 10 75 DAYS WITH PRECIPITATION 12 11 13 17 12 0 0 0 0 4 11 11 91 GREATEST DAILY PRECIPITATION 23.0 9.0 16.0 23.0 26.0 0.0 0.0 0.0 0.0 9.0 30.0 11.0 30.0 DAY 7 3 29 23 9 ** ** ** ** 31 16 15 DAY WITH THUNDER STORM 1 0 1 2 3 0 0 0 0 1 4 0 12 DAYS WITH SNOW OR SLEET 1 4 0 0 0 0 0 0 0 0 0 1 6 DAYS WITH DUST 0 0 2 0 0 0 1 1 0 0 0 0 4 WIND DIRECTION (PREVAILING) 180 180 180 90 180 180 45 90 90 180 90 90 180 PREVAILING WIND SPEED(KNOTS) 8.9 7.1 8.1 7.2 7.6 7.1 8.0 9.2 6.9 10.6 8.5 8.5 8.2 PREVAILING WIND PERCENT 13.5 9.7 18.7 10.7 10.3 5.3 1.9 3.9 5.3 3.2 8.7 3.9 6.4 CALMS PERCENT OF WIND 65.8 72.4 60.0 70.7 64.5 81.3 96.8 93.5 87.3 90.3 86.7 91.0 80.1 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 175 161 189 159 157 167 59 111 144 194 121 131 161 VECTOR WIND MAGNITUDE(KNOTS) 1.6 1.0 1.6 1.3 1.1 0.5 0.1 0.4 0.4 0.6 0.8 0.5 0.7 WIND STEADINESES (MEAN %) 51.6 50.0 48.5 52.0 40.7 33.3 33.3 80.0 40.0 54.5 72.7 55.6 41.2 WIND SPEED (MEAN KNOTS) 3.1 2.0 3.3 2.5 2.7 1.5 0.3 0.5 1.0 1.1 1.1 0.9 1.7 FASTEST WIND DIRECTION 300 150 270 270 60 320 170 100 140 200 100 100 300 FASTEST WIND SPEED (KNOTS) 15 10 12 15 12 12 8 10 15 15 15 15 15 DAY 16 1 9 23 25 15 1 6 5 20 15 8 DAYS WITH SKY CLEAR (0-2)/8 12 12 14 12 14 29 29 31 30 26 16 12 237 DAYS WITH P.CLOUDY (3-6)/8 7 9 6 9 14 1 2 0 0 3 6 11 68 DAYS WITH CLOUDY (7-8)/8 12 8 11 9 3 0 0 0 0 2 8 8 61 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 0 0 0 0 0 0 0 0 0 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 882.0 882.5 881.4 881.5 882.8 878.9 875.3 876.8 882.2 885.7 886.8 883.9 881.6 MAX. QFE PRESSURE IN HPA 888.3 888.8 886.0 885.6 886.0 884.8 880.9 883.0 886.0 892.0 892.2 890.0 892.2 DAY-HOUR 12- 6 6- 6 27- 6 11- 6 3- 6 2- 6 20- 6 31- 3 13- 3 15- 6 24- 6 17- 6 MIN. QFE PRESSURE IN HPA 874.0 870.8 873.7 872.0 879.0 873.0 869.4 873.2 876.8 880.3 880.5 878.1 869.4 DAY-HOUR 10- 6 2-15 10-12 24-12 14-15 21-15 10- 9 19-12 7-15 25-12 1-12 8-12 MEAN QNH PRESSURE IN HPA 1012.1 1012.7 1011.4 1011.6 1013.0 1008.7 1004.6 1006.3 1012.4 1016.3 1017.5 1014.2 1011.7 MAX. QNH PRESSURE IN HPA 1019.2 1019.7 1016.6 1016.2 1016.6 1015.3 1010.9 1013.2 1016.6 1023.3 1023.5 1021.1 1023.5 DAY-HOUR 12- 6 6- 6 27- 6 11- 6 3- 6 2- 6 20- 6 31- 3 13- 3 15- 6 24- 6 17- 6 MIN. QNH PRESSURE IN HPA 1003.2 999.6 1002.9 1000.9 1008.8 1002.1 998.0 1002.3 1006.3 1010.2 1010.5 1007.8 998.0 DAY-HOUR 10- 6 2-15 10-12 24-12 14-15 21-15 10- 9 19-12 7-15 25-12 1-12 8-12 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 882.2 882.8 881.6 881.9 882.9 879.3 876.0 877.5 883.2 886.5 887.2 884.1 882.1 MAX. QFE PRESSURE IN HPA 888.0 888.0 885.0 885.0 885.6 884.4 880.6 883.0 886.0 891.0 891.0 890.0 891.0 DAY 12 6 27 11 3 5 20 31 13 14 24 22 MIN. QFE PRESSURE IN HPA 875.0 873.2 874.2 873.0 880.0 874.6 869.7 874.2 879.8 882.0 881.3 879.0 869.7 DAY 7 3 10 24 16 23 10 13 8 25 1 9 MEAN QNH PRESSURE IN HPA 1012.4 1013.0 1011.7 1012.0 1013.2 1009.1 1005.5 1007.1 1013.5 1017.2 1017.9 1014.5 1012.2 MAX. QNH PRESSURE IN HPA 1018.8 1018.8 1015.5 1015.5 1016.2 1014.8 1010.6 1013.2 1016.6 1022.2 1022.2 1021.1 1022.2 DAY 12 6 27 11 3 5 20 31 13 14 24 22 MIN. QNH PRESSURE IN HPA 1004.3 1002.3 1003.4 1002.1 1009.9 1003.9 998.4 1003.4 1009.7 1012.1 1011.3 1008.8 998.4 DAY 7 3 10 24 16 23 10 13 8 25 1 9 MEAN QFF PRESSURE IN HPA 1013.4 1015.1 1010.1 1009.4 1008.4 1001.6 995.9 998.5 1006.8 1012.4 1015.6 1014.5 1008.5 MAX. QFF PRESSURE IN HPA 1021.7 1023.4 1015.3 1014.3 1012.9 1008.0 1001.5 1006.1 1010.7 1017.7 1020.9 1022.4 1023.4 DAY 19 6 4 5 2 2 20 31 26 16 25 22 MIN. QFF PRESSURE IN HPA 1003.0 1004.9 1001.0 999.3 1004.3 995.7 987.9 994.8 1002.0 1006.9 1007.8 1007.7 987.9 DAY 10 3 10 24 25 23 10 13 2 4 1 27 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 882.7 883.3 882.2 882.4 883.5 879.6 876.3 877.5 883.2 886.9 887.9 884.8 882.5 MAX. QFE PRESSURE IN HPA 888.3 888.8 886.0 885.6 886.0 884.8 880.9 882.6 886.0 892.0 892.2 890.0 892.2 DAY 12 6 27 11 3 2 20 31 13 15 24 17 MIN. QFE PRESSURE IN HPA 874.0 874.0 874.8 873.0 881.0 874.7 869.9 874.6 878.7 882.7 881.1 879.6 869.9 DAY 10 3 10 24 15 21 10 13 6 4 1 5 MEAN QNH PRESSURE IN HPA 1012.9 1013.6 1012.4 1012.5 1013.8 1009.4 1005.7 1007.1 1013.5 1017.7 1018.8 1015.3 1012.7 MAX. QNH PRESSURE IN HPA 1019.2 1019.7 1016.6 1016.2 1016.6 1015.3 1010.9 1012.8 1016.6 1023.3 1023.5 1021.1 1023.5 DAY 12 6 27 11 3 2 20 31 13 15 24 17 MIN. QNH PRESSURE IN HPA 1003.2 1003.2 1004.1 1002.1 1011.0 1004.0 998.6 1003.9 1008.4 1012.9 1011.1 1009.4 998.6 DAY 10 3 10 24 15 21 10 13 6 4 1 5 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 882.4 882.9 881.8 881.9 883.2 879.2 875.5 876.9 882.5 886.1 887.2 884.5 882.0 MAX. QFE PRESSURE IN HPA 888.0 888.0 885.2 885.6 885.7 884.4 879.6 881.2 885.2 891.0 891.2 889.0 891.2 DAY 19 5 27 11 20 1 20 30 24 15 24 20 MIN. QFE PRESSURE IN HPA 875.2 874.0 874.0 873.0 881.0 874.1 869.4 874.4 877.9 881.5 881.3 879.3 869.4 DAY 10 2 10 24 15 21 10 20 6 4 1 8 MEAN QNH PRESSURE IN HPA 1012.6 1013.2 1011.9 1012.1 1013.5 1009.0 1004.9 1006.4 1012.7 1016.7 1018.0 1014.9 1012.2 MAX. QNH PRESSURE IN HPA 1018.8 1018.8 1015.7 1016.2 1016.3 1014.8 1009.4 1011.2 1015.7 1022.2 1022.4 1020.0 1022.4 DAY 19 5 27 11 20 1 20 30 24 15 24 20 MIN. QNH PRESSURE IN HPA 1004.5 1003.2 1003.2 1002.1 1011.0 1003.3 998.0 1003.6 1007.5 1011.6 1011.3 1009.1 998.0 DAY 10 2 10 24 15 21 10 20 6 4 1 8 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 881.5 882.0 880.9 881.0 882.5 878.5 874.3 876.1 881.1 884.4 885.9 883.0 880.9 MAX. QFE PRESSURE IN HPA 887.4 887.2 884.0 884.0 884.4 883.4 877.9 880.6 884.4 889.0 889.7 887.4 889.7 DAY 19 5 4 11 2 2 20 30 13 14 24 20 MIN. QFE PRESSURE IN HPA 874.0 872.0 873.7 872.0 880.4 873.4 869.4 873.2 876.9 880.3 880.5 878.1 869.4 DAY 22 2 10 24 14 21 10 19 7 25 1 8 MEAN QNH PRESSURE IN HPA 1011.6 1012.2 1010.9 1011.1 1012.7 1008.2 1003.5 1005.5 1011.1 1014.8 1016.5 1013.2 1010.9 MAX. QNH PRESSURE IN HPA 1018.2 1017.9 1014.4 1014.4 1014.8 1013.7 1007.5 1010.6 1014.8 1020.0 1020.7 1018.2 1020.7 DAY 19 5 4 11 2 2 20 30 13 14 24 20 MIN. QNH PRESSURE IN HPA 1003.2 1000.9 1002.9 1000.9 1010.3 1002.5 998.0 1002.3 1006.4 1010.2 1010.5 1007.8 998.0 DAY 22 2 10 24 14 21 10 19 7 25 1 8 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 881.1 881.6 880.3 880.4 881.8 877.9 874.2 876.1 881.1 884.6 885.8 883.0 880.7 MAX. QFE PRESSURE IN HPA 887.2 886.6 883.2 883.0 884.0 883.0 877.7 880.9 884.0 888.7 890.3 887.0 890.3 DAY 19 5 27 11 2 2 20 30 13 16 24 19 MIN. QFE PRESSURE IN HPA 874.0 870.8 873.7 872.0 879.0 873.0 869.8 874.0 876.8 880.5 881.6 878.6 869.8 DAY 22 2 10 24 14 21 9 6 7 26 1 15 MEAN QNH PRESSURE IN HPA 1011.1 1011.7 1010.2 1010.3 1011.9 1007.5 1003.4 1005.6 1011.1 1015.1 1016.3 1013.3 1010.6 MAX. QNH PRESSURE IN HPA 1017.9 1017.3 1013.5 1013.2 1014.4 1013.2 1007.3 1010.9 1014.4 1019.6 1021.4 1017.7 1021.4 DAY 19 5 27 11 2 2 20 30 13 16 24 19 MIN. QNH PRESSURE IN HPA 1003.2 999.6 1002.9 1000.9 1008.8 1002.1 998.5 1003.2 1006.3 1010.5 1011.7 1008.3 998.5 DAY 22 2 10 24 14 21 9 6 7 26 1 15 MEAN QFF PRESSURE IN HPA 1012.0 1013.5 1008.4 1007.6 1007.0 999.8 993.8 996.8 1004.2 1010.2 1013.9 1013.2 1006.7 MAX. QFF PRESSURE IN HPA 1021.4 1021.4 1012.9 1011.5 1010.9 1006.5 998.0 1003.0 1008.3 1015.0 1019.6 1019.4 1021.4 DAY 19 5 25 4 2 2 20 30 24 15 24 21 MIN. QFF PRESSURE IN HPA 1001.9 1001.4 1000.2 1000.1 1004.2 994.0 988.3 993.8 998.7 1004.6 1008.3 1007.6 988.3 DAY 22 2 10 23 30 21 9 6 5 4 1 5 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 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 M MEANS AND EXTREMES FOR THE YEAR 1969 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.8 7.6 13.4 14.9 22.7 29.2 32.2 31.5 27.2 21.8 13.5 9.8 19.1 MINIMUN AIR TEMPERATURE (C) 2.3 2.5 9.3 9.2 14.3 17.8 19.2 20.3 16.2 13.6 5.4 3.8 11.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 3 9 16 0 0 0 0 28 DAYS WITH MINIMUM TEMP. <=-4 1 1 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH FREEZING MIN.<= 0 6 7 0 0 0 0 0 0 0 0 0 4 17 TEMPERATURE RECORDS LOWEST(C) -4.0 -4.0 3.0 3.0 11.0 15.0 16.0 15.0 11.0 8.0 1.0 -1.0 -4.0 DAY 31 16 25 14 2 5 1 16 23 31 19 11 MAXIMUM AIR TEMPERATURE (C) 9.6 12.3 17.8 19.8 28.7 36.3 39.3 38.3 34.3 28.6 20.5 15.5 25.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 1 16 30 31 31 29 15 0 0 153 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 15.0 18.0 24.0 31.0 34.0 40.0 45.0 43.0 39.0 36.0 26.0 21.0 45.0 DAY 1 7 31 27 12 12 25 6 4 1 6 7 DIF. BETWEEN (MAX.-MIN.) (C) 7.3 9.8 8.5 10.6 14.4 18.5 20.1 18.0 18.1 15.0 15.1 11.7 14.0 MEAN DAILY TEMP. (MDT) (C) 5.9 7.4 13.5 14.5 21.5 27.0 29.3 29.3 25.2 21.1 12.9 9.6 18.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.5 42.0 181.5 256.5 257.0 127.5 43.0 0.0 0.0 908.0 HEATING DEG. DAYS(BASE 18 0C) 374.5 297.0 138.0 119.5 3.5 0.0 0.0 0.0 0.0 10.0 152.0 259.0 1353.5 DEWPOINT (MEAN C) 1.6 2.0 6.0 7.0 7.4 7.0 8.8 8.1 4.1 6.8 2.9 2.5 5.4 MIXING RATIO (G/KG) 5.00 5.14 6.77 7.27 7.45 7.29 8.24 7.83 6.01 7.21 5.57 5.37 6.60 VAPOUR PRESSURE (HPA) 7.04 7.24 9.49 10.18 10.43 10.18 11.47 10.92 8.40 10.04 7.80 7.56 9.23 SATURATION DEF. (HPA) 2.44 3.64 6.37 7.88 18.67 32.80 40.05 38.12 30.11 18.07 8.50 5.09 17.65 RELATIVE HUMIDITY (MEAN %) 76 69 63 63 40 26 25 24 24 42 51 63 47 RELATIVE HUMIDITY (MAX. %) 86 81 76 77 54 39 38 35 38 58 71 78 61 RELATIVE HUMIDITY (MIN. %) 66 58 53 52 31 20 19 19 17 32 37 50 38 RELATIVE HUMIDITY (MEAN% 03UTC) 83 79 71 74 53 39 38 35 38 56 70 73 59 RELATIVE HUMIDITY (MEAN% 09UTC) 72 63 59 56 34 22 21 20 19 34 43 57 42 RELATIVE HUMIDITY (MEAN% 15UTC) 74 69 61 60 36 22 20 21 20 39 49 62 44 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 190.0 52.0 147.0 150.0 71.0 0.0 0.0 0.0 0.0 47.4 41.1 71.6 770.1 DAYS WITH PRECIPITATION >=10 6 1 6 7 3 0 0 0 0 1 2 3 29 DAYS WITH PRECIPITATION >= 5 12 4 11 11 4 0 0 0 0 4 4 6 56 DAYS WITH PRECIPITATION >= 1 16 14 16 15 7 0 0 0 0 10 6 13 97 DAYS WITH PRECIPITATION 16 14 16 16 7 0 0 0 1 11 7 13 101 GREATEST DAILY PRECIPITATION 36.0 14.0 23.0 20.0 33.0 0.0 0.0 0.0 0.0 12.0 18.0 15.0 36.0 DAY 20 20 20 6 7 ** ** ** ** 20 8 24 DAY WITH THUNDER STORM 2 0 3 2 2 0 0 0 0 1 1 0 11 DAYS WITH SNOW OR SLEET 2 1 0 0 0 0 0 0 0 0 0 0 3 DAYS WITH DUST 0 2 2 2 0 0 0 0 0 1 0 0 7 WIND DIRECTION (PREVAILING) 180 180 90 90 90 90 180 90 225 315 225 180 180 PREVAILING WIND SPEED(KNOTS) 10.3 9.8 7.7 8.2 7.8 7.6 8.5 6.9 11.8 7.8 6.9 5.1 8.1 PREVAILING WIND PERCENT 5.2 8.6 9.7 12.0 13.5 6.7 3.9 5.8 16.0 5.6 14.7 11.0 7.1 CALMS PERCENT OF WIND 88.4 74.3 63.2 68.7 63.9 81.3 82.6 80.0 44.7 83.2 57.3 60.0 70.7 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 161 150 155 1831 VECTOR WIND DIRECTION (MEAN) 158 161 185 160 148 162 202 185 244 253 207 208 187 VECTOR WIND MAGNITUDE(KNOTS) 0.8 1.5 0.5 1.5 1.2 0.8 0.7 0.5 1.8 0.3 1.2 1.3 0.8 WIND STEADINESES (MEAN %) 72.7 68.2 15.6 48.4 40.0 50.0 46.7 33.3 36.7 25.0 50.0 40.6 33.3 WIND SPEED (MEAN KNOTS) 1.1 2.2 3.2 3.1 3.0 1.6 1.5 1.5 4.9 1.2 2.4 3.2 2.4 FASTEST WIND DIRECTION 200 180 320 200 100 180 150 240 50 240 210 270 270 FASTEST WIND SPEED (KNOTS) 12 12 20 18 12 12 10 10 22 15 15 30 30 DAY 29 8 22 2 7 6 1 2 13 10 13 31 DAYS WITH SKY CLEAR (0-2)/8 12 12 5 7 17 30 29 29 27 18 21 13 220 DAYS WITH P.CLOUDY (3-6)/8 9 8 13 11 11 0 2 2 3 9 8 12 88 DAYS WITH CLOUDY (7-8)/8 10 8 13 12 3 0 0 0 0 4 1 6 57 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 0 0 0 0 0 0 0 0 0 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** 333.0 299.3 221.8 237.5 171.2 ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 882.5 883.8 881.9 881.6 882.1 879.0 877.5 878.5 878.5 877.0 880.3 884.5 880.6 MAX. QFE PRESSURE IN HPA 889.1 891.1 886.7 886.0 887.0 883.2 881.2 882.3 882.0 883.0 891.2 890.0 891.2 DAY-HOUR 12- 9 2- 9 25- 6 19- 3 11- 6 4- 3 15- 6 25- 6 29- 3 26- 6 24- 6 11- 6 MIN. QFE PRESSURE IN HPA 872.7 877.0 873.0 872.0 878.0 873.0 874.0 875.0 873.8 870.8 871.0 877.2 870.8 DAY-HOUR 23- 9 8-15 22- 3 17-12 19-15 14-15 30-12 1-12 11-12 28-12 8-12 31-12 MEAN QNH PRESSURE IN HPA 1012.7 1014.1 1012.0 1011.7 1012.3 1008.7 1007.1 1008.2 1008.2 1006.5 1010.2 1014.9 1010.5 MAX. QNH PRESSURE IN HPA 1020.1 1022.3 1017.4 1016.6 1017.7 1013.5 1011.2 1012.5 1012.1 1013.2 1022.4 1021.1 1022.4 DAY-HOUR 12- 9 2- 9 25- 6 19- 3 11- 6 4- 3 15- 6 25- 6 29- 3 26- 6 24- 6 11- 6 MIN. QNH PRESSURE IN HPA 1001.7 1006.5 1002.1 1000.9 1007.7 1002.1 1003.2 1004.3 1003.0 999.6 999.8 1006.8 999.6 DAY-HOUR 23- 9 8-15 22- 3 17-12 19-15 14-15 30-12 1-12 11-12 28-12 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 882.7 883.8 882.3 881.8 882.5 879.7 878.1 879.0 879.1 877.5 880.8 884.9 881.0 MAX. QFE PRESSURE IN HPA 888.3 890.2 886.0 886.0 887.0 883.2 881.0 882.0 882.0 881.3 891.0 889.0 891.0 DAY 12 3 25 19 17 4 15 25 29 26 24 10 MIN. QFE PRESSURE IN HPA 873.0 881.0 873.0 875.0 878.0 875.0 876.0 876.0 876.0 872.0 873.0 879.0 872.0 DAY 23 14 22 13 27 15 30 1 10 29 8 31 MEAN QNH PRESSURE IN HPA 1012.9 1014.2 1012.4 1011.9 1012.7 1009.6 1007.8 1008.8 1008.9 1007.0 1010.8 1015.4 1011.0 MAX. QNH PRESSURE IN HPA 1019.2 1021.3 1016.6 1016.6 1017.7 1013.5 1011.0 1012.1 1012.1 1011.3 1022.2 1020.0 1022.2 DAY 12 3 25 19 17 4 15 25 29 26 24 10 MIN. QNH PRESSURE IN HPA 1002.1 1011.0 1002.1 1004.3 1007.7 1004.3 1005.4 1005.4 1005.4 1000.9 1002.1 1008.8 1000.9 DAY 23 14 22 13 27 15 30 1 10 29 8 31 MEAN QFF PRESSURE IN HPA 1014.0 1015.1 1010.0 1009.0 1006.8 1001.1 998.0 999.4 1001.4 1001.5 1009.4 1015.3 1006.7 MAX. QFF PRESSURE IN HPA 1022.3 1024.3 1017.5 1016.2 1012.9 1005.7 1001.3 1003.6 1005.5 1006.1 1021.2 1021.5 1024.3 DAY 31 3 25 19 17 4 15 31 29 26 24 11 MIN. QFF PRESSURE IN HPA 1000.4 1011.5 998.1 1000.2 999.8 995.2 995.2 994.9 996.9 996.5 997.9 1007.2 994.9 DAY 23 20 22 2 27 14 26 7 10 29 2 24 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 883.2 884.4 882.7 882.3 882.9 879.7 878.2 879.2 879.3 878.1 881.6 885.8 881.4 MAX. QFE PRESSURE IN HPA 888.8 891.0 886.7 886.0 887.0 883.0 881.2 882.3 882.0 883.0 891.2 890.0 891.2 DAY 12 3 25 19 11 4 15 25 29 26 24 11 MIN. QFE PRESSURE IN HPA 874.0 881.0 873.0 875.0 879.2 874.6 876.0 876.0 875.0 872.8 873.4 879.4 872.8 DAY 23 8 22 13 27 14 18 1 11 29 8 31 MEAN QNH PRESSURE IN HPA 1013.5 1014.8 1013.0 1012.5 1013.1 1009.6 1007.9 1009.0 1009.1 1007.7 1011.7 1016.4 1011.5 MAX. QNH PRESSURE IN HPA 1019.7 1022.2 1017.4 1016.6 1017.7 1013.2 1011.2 1012.5 1012.1 1013.2 1022.4 1021.1 1022.4 DAY 12 3 25 19 11 4 15 25 29 26 24 11 MIN. QNH PRESSURE IN HPA 1003.2 1011.0 1002.1 1004.3 1009.0 1003.9 1005.4 1005.4 1004.3 1001.8 1002.5 1009.2 1001.8 DAY 23 8 22 13 27 14 18 1 11 29 8 31 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 883.3 884.6 882.3 882.0 882.5 879.1 877.8 878.6 878.6 877.2 880.4 884.7 880.9 MAX. QFE PRESSURE IN HPA 889.1 891.1 885.8 885.3 886.0 882.0 880.4 881.6 881.2 881.0 890.2 888.5 891.1 DAY 12 2 25 25 16 2 15 31 29 26 24 21 MIN. QFE PRESSURE IN HPA 872.7 880.2 874.0 873.0 880.0 874.4 875.0 875.2 874.4 872.0 872.6 878.3 872.0 DAY 23 8 22 17 19 14 18 8 11 28 8 31 MEAN QNH PRESSURE IN HPA 1013.5 1015.0 1012.5 1012.1 1012.7 1008.9 1007.4 1008.3 1008.4 1006.8 1010.3 1015.2 1010.9 MAX. QNH PRESSURE IN HPA 1020.1 1022.3 1016.4 1015.8 1016.6 1012.1 1010.3 1011.7 1011.2 1011.0 1021.3 1019.4 1022.3 DAY 12 2 25 25 16 2 15 31 29 26 24 21 MIN. QNH PRESSURE IN HPA 1001.7 1010.1 1003.2 1002.1 1009.9 1003.6 1004.3 1004.5 1003.6 1000.9 1001.6 1008.0 1000.9 DAY 23 8 22 17 19 14 18 8 11 28 8 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 881.8 883.4 881.4 881.2 881.7 878.4 876.9 877.9 877.7 876.0 879.0 883.3 879.9 MAX. QFE PRESSURE IN HPA 887.1 890.0 884.6 884.4 885.3 882.0 879.2 881.0 880.1 879.2 888.9 887.0 890.0 DAY 12 4 18 27 16 4 15 31 29 26 24 10 MIN. QFE PRESSURE IN HPA 873.8 878.0 874.0 872.0 878.8 874.0 874.0 875.0 873.8 870.8 871.0 877.2 870.8 DAY 23 8 22 17 27 14 30 1 11 28 8 31 MEAN QNH PRESSURE IN HPA 1011.9 1013.7 1011.5 1011.3 1011.8 1008.1 1006.5 1007.5 1007.3 1005.4 1008.8 1013.5 1009.8 MAX. QNH PRESSURE IN HPA 1017.8 1021.1 1015.0 1014.8 1015.8 1012.1 1009.0 1011.0 1010.0 1009.0 1019.8 1017.7 1021.1 DAY 12 4 18 27 16 4 15 31 29 26 24 10 MIN. QNH PRESSURE IN HPA 1003.0 1007.7 1003.2 1000.9 1008.6 1003.2 1003.2 1004.3 1003.0 999.6 999.8 1006.8 999.6 DAY 23 8 22 17 27 14 30 1 11 28 8 31 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 881.6 882.7 880.9 880.8 881.1 878.0 876.8 877.8 877.6 876.3 879.6 883.7 879.7 MAX. QFE PRESSURE IN HPA 887.1 890.1 884.0 883.4 884.0 881.0 879.0 880.0 879.4 881.0 889.2 887.6 890.1 DAY 12 2 3 27 11 4 14 17 28 26 24 10 MIN. QFE PRESSURE IN HPA 874.0 877.0 873.4 872.0 878.0 873.0 874.8 875.0 874.1 870.8 871.6 878.0 870.8 DAY 28 8 20 17 19 14 18 6 11 28 8 26 MEAN QNH PRESSURE IN HPA 1011.7 1012.9 1010.9 1010.8 1011.1 1007.6 1006.3 1007.5 1007.2 1005.7 1009.4 1014.0 1009.6 MAX. QNH PRESSURE IN HPA 1017.8 1021.2 1014.4 1013.7 1014.4 1011.0 1008.8 1009.9 1009.2 1011.0 1020.2 1018.4 1021.2 DAY 12 2 3 27 11 4 14 17 28 26 24 10 MIN. QNH PRESSURE IN HPA 1003.2 1006.5 1002.5 1000.9 1007.7 1002.1 1004.1 1004.3 1003.3 999.6 1000.5 1007.7 999.6 DAY 28 8 20 17 19 14 18 6 11 28 8 26 MEAN QFF PRESSURE IN HPA 1012.8 1013.6 1008.4 1007.8 1005.0 998.9 996.3 998.0 999.7 1000.1 1007.9 1013.8 1005.2 MAX. QFF PRESSURE IN HPA 1021.5 1023.3 1014.1 1012.9 1008.9 1002.9 998.9 1001.4 1002.5 1006.5 1018.8 1019.7 1023.3 DAY 31 2 25 14 16 4 14 29 23 26 24 10 MIN. QFF PRESSURE IN HPA 1003.1 1006.5 999.5 999.0 999.7 993.2 993.8 993.9 995.8 995.3 997.1 1007.6 993.2 DAY 22 8 20 17 27 14 18 6 11 28 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 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 M MEANS AND EXTREMES FOR THE YEAR 1970 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.5 10.0 13.0 19.9 24.3 30.0 32.1 30.7 26.7 21.2 15.9 7.5 19.8 MINIMUN AIR TEMPERATURE (C) 1.1 2.4 5.4 9.8 12.5 16.5 20.0 17.2 14.0 10.2 8.2 1.4 9.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 1 1 0 9 0 1 0 0 0 12 DAYS WITH MINIMUM TEMP. <=-4 1 0 0 0 0 0 0 0 0 0 0 1 2 DAYS WITH FREEZING MIN.<= 0 17 7 0 0 0 0 0 0 0 0 0 14 38 TEMPERATURE RECORDS LOWEST(C) -4.0 -2.0 1.0 4.0 8.0 13.0 16.0 15.0 11.0 6.0 4.0 -5.0 -5.0 DAY 29 4 25 25 7 1 26 19 30 16 26 15 MAXIMUM AIR TEMPERATURE (C) 11.7 16.7 18.3 26.2 30.5 37.2 38.7 38.2 34.9 28.8 22.1 13.3 26.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 7 20 30 31 31 30 10 0 0 159 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 17.0 21.0 27.0 33.0 37.0 41.0 41.0 42.0 38.0 34.0 27.0 22.0 42.0 DAY 4 15 31 13 23 29 21 11 27 1 1 5 DIF. BETWEEN (MAX.-MIN.) (C) 10.6 14.3 12.9 16.4 18.0 20.7 18.7 21.0 20.9 18.6 13.9 11.9 16.5 MEAN DAILY TEMP. (MDT) (C) 6.4 9.5 11.8 18.0 21.5 26.8 29.4 27.7 24.4 19.5 15.2 7.4 18.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 5.0 45.5 175.5 259.0 207.5 103.5 13.0 0.0 0.0 809.0 HEATING DEG. DAYS(BASE 18 0C) 360.5 237.5 191.5 36.5 6.0 0.0 0.0 0.0 0.0 8.0 85.5 330.0 1255.5 DEWPOINT (MEAN C) 1.0 0.7 1.5 5.7 6.2 8.1 8.9 7.8 4.4 2.6 2.0 -0.0 4.1 MIXING RATIO (G/KG) 4.77 4.71 4.98 6.76 6.96 7.98 8.47 7.86 6.26 5.43 5.15 4.46 6.15 VAPOUR PRESSURE (HPA) 6.71 6.64 6.99 9.47 9.72 11.07 11.70 10.88 8.74 7.63 7.27 6.29 8.59 SATURATION DEF. (HPA) 3.31 6.42 8.80 15.40 22.96 34.51 38.96 36.50 29.19 19.52 11.86 4.72 19.35 RELATIVE HUMIDITY (MEAN %) 71 56 50 44 35 26 25 25 25 31 41 62 41 RELATIVE HUMIDITY (MAX. %) 84 75 74 67 57 37 34 34 32 40 51 79 55 RELATIVE HUMIDITY (MIN. %) 59 41 34 30 23 20 20 20 19 23 33 47 31 RELATIVE HUMIDITY (MEAN% 03UTC) 83 73 72 65 57 37 34 34 32 39 49 77 54 RELATIVE HUMIDITY (MEAN% 09UTC) 63 44 39 34 27 24 21 21 23 26 37 54 34 RELATIVE HUMIDITY (MEAN% 15UTC) 69 50 43 35 27 21 21 22 21 28 38 55 36 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 176.9 58.2 72.4 60.4 12.0 0.0 0.0 0.0 0.0 7.0 45.1 93.0 525.0 DAYS WITH PRECIPITATION >=10 7 2 3 3 1 0 0 0 0 0 1 3 20 DAYS WITH PRECIPITATION >= 5 8 3 4 3 1 0 0 0 0 1 1 4 25 DAYS WITH PRECIPITATION >= 1 9 3 9 6 3 0 0 0 0 2 4 6 42 DAYS WITH PRECIPITATION 11 3 13 7 3 0 0 0 0 3 4 7 51 GREATEST DAILY PRECIPITATION 34.0 31.0 19.0 22.0 10.0 0.0 0.0 0.0 0.0 6.0 40.0 51.0 51.0 DAY 22 6 3 23 6 ** ** ** ** 14 28 13 DAY WITH THUNDER STORM 0 0 1 1 0 0 0 0 0 0 0 0 2 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 1 1 0 0 0 0 0 0 0 0 0 2 WIND DIRECTION (PREVAILING) 225 225 225 225 225 225 315 225 225 225 135 180 225 PREVAILING WIND SPEED(KNOTS) 5.5 10.7 10.8 14.4 15.5 13.4 9.9 13.0 12.0 12.1 13.7 7.8 11.9 PREVAILING WIND PERCENT 10.3 12.9 15.4 21.3 15.5 22.0 14.2 13.5 28.0 19.4 10.0 7.7 15.1 CALMS PERCENT OF WIND 64.5 61.4 46.8 39.3 46.5 50.7 63.9 64.5 46.0 65.8 66.0 74.8 57.6 NO. OF WIND OBSERVATION 155 140 156 150 155 150 155 155 150 155 150 155 1826 VECTOR WIND DIRECTION (MEAN) 182 223 178 227 206 209 247 225 234 214 170 204 212 VECTOR WIND MAGNITUDE(KNOTS) 1.2 1.6 2.7 3.2 3.1 4.1 1.8 2.6 3.3 2.9 1.9 0.8 2.3 WIND STEADINESES (MEAN %) 60.0 51.6 46.6 41.0 48.4 70.7 47.4 68.4 55.0 74.4 52.8 40.0 51.1 WIND SPEED (MEAN KNOTS) 2.0 3.1 5.8 7.8 6.4 5.8 3.8 3.8 6.0 3.9 3.6 2.0 4.5 FASTEST WIND DIRECTION 160 240 90 240 220 180 210 240 50 240 130 330 220 FASTEST WIND SPEED (KNOTS) 15 30 30 30 40 24 24 30 25 20 30 15 40 DAY 1 10 5 2 24 4 26 3 19 19 16 2 DAYS WITH SKY CLEAR (0-2)/8 11 14 13 12 24 30 30 31 30 29 13 20 257 DAYS WITH P.CLOUDY (3-6)/8 8 12 8 12 5 0 1 0 0 2 13 5 66 DAYS WITH CLOUDY (7-8)/8 12 2 10 6 2 0 0 0 0 0 4 6 42 DAYS WITH VISIBILITY =< 2 KM 1 1 0 0 0 0 0 0 0 0 0 0 2 DURATION OF SUNSHINE HOURS 151.1 203.1 202.9 216.8 309.3 366.2 357.3 351.5 311.7 292.9 176.4 208.3 3147.5 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 882.8 883.2 881.0 881.5 879.5 874.8 872.4 872.9 876.9 882.4 885.2 884.0 879.7 MAX. QFE PRESSURE IN HPA 890.0 889.5 886.2 886.5 884.0 879.6 876.2 878.6 884.6 888.3 889.0 892.1 892.1 DAY-HOUR 3- 6 3- 6 26- 6 26- 6 22- 6 21- 6 26- 3 29- 3 23- 6 29- 6 1- 6 30- 6 MIN. QFE PRESSURE IN HPA 873.8 875.3 873.4 869.4 874.5 870.8 869.0 869.6 870.5 876.7 881.8 876.6 869.0 DAY-HOUR 22-12 23-12 19-15 19- 9 30-15 9-15 7-15 20-12 1-15 5-12 23-12 13-12 MEAN QNH PRESSURE IN HPA 1013.0 1013.4 1011.0 1011.5 1009.3 1004.0 1001.4 1002.0 1006.5 1012.5 1015.7 1014.4 1009.5 MAX. QNH PRESSURE IN HPA 1021.1 1020.5 1016.8 1017.2 1014.4 1009.4 1005.6 1008.3 1015.0 1019.2 1020.0 1023.4 1023.4 DAY-HOUR 3- 6 3- 6 26- 6 26- 6 22- 6 21- 6 26- 3 29- 3 23- 6 29- 6 1- 6 30- 6 MIN. QNH PRESSURE IN HPA 1003.0 1004.6 1002.5 998.0 1003.7 999.6 997.6 998.3 999.3 1006.2 1011.9 1006.1 997.6 DAY-HOUR 22-12 23-12 19-15 19- 9 30-15 9-15 7-15 20-12 1-15 5-12 23-12 13-12 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 883.0 883.6 881.9 882.1 880.4 875.9 873.4 874.1 878.0 883.2 885.9 884.6 880.5 MAX. QFE PRESSURE IN HPA 889.3 888.6 886.0 886.0 884.0 878.8 876.2 878.6 883.9 887.6 888.6 891.6 891.6 DAY 3 3 26 26 23 21 26 29 23 30 1 31 MIN. QFE PRESSURE IN HPA 876.6 876.7 877.8 871.1 877.0 873.0 871.5 871.0 873.5 878.0 883.1 877.6 871.0 DAY 22 19 10 19 16 30 17 7 10 9 23 13 MEAN QNH PRESSURE IN HPA 1013.3 1013.9 1012.0 1012.3 1010.3 1005.3 1002.5 1003.3 1007.7 1013.5 1016.5 1015.0 1010.5 MAX. QNH PRESSURE IN HPA 1020.3 1019.5 1016.6 1016.6 1014.4 1008.6 1005.6 1008.3 1014.3 1018.4 1019.5 1022.9 1022.9 DAY 3 3 26 26 23 21 26 29 23 30 1 31 MIN. QNH PRESSURE IN HPA 1006.1 1006.2 1007.4 999.9 1006.5 1002.1 1000.4 999.8 1002.6 1007.7 1013.4 1007.2 999.8 DAY 22 19 10 19 16 30 17 7 10 9 23 13 MEAN QFF PRESSURE IN HPA 1014.6 1013.9 1010.3 1007.6 1004.0 996.6 992.7 994.2 1000.3 1008.7 1013.6 1016.1 1006.0 MAX. QFF PRESSURE IN HPA 1022.1 1020.9 1015.9 1013.8 1009.4 1000.2 997.7 999.9 1007.6 1014.6 1016.2 1024.5 1024.5 DAY 3 3 26 26 13 21 26 29 23 27 19 31 MIN. QFF PRESSURE IN HPA 1007.1 1003.6 1004.4 991.1 997.1 991.8 989.5 990.7 994.5 1002.9 1009.6 1007.4 989.5 DAY 22 19 22 19 16 30 7 2 10 6 9 13 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 883.7 884.7 882.1 882.6 880.5 875.8 873.2 873.9 878.2 883.7 886.6 885.2 880.9 MAX. QFE PRESSURE IN HPA 890.0 889.5 886.2 886.5 884.0 879.6 876.1 878.6 884.6 888.3 889.0 892.1 892.1 DAY 3 3 26 26 22 21 21 29 23 29 1 30 MIN. QFE PRESSURE IN HPA 876.6 878.0 877.0 870.1 877.0 871.7 871.0 871.1 873.4 878.9 883.1 878.1 870.1 DAY 22 23 19 19 29 30 8 7 1 9 23 13 MEAN QNH PRESSURE IN HPA 1014.1 1015.2 1012.3 1012.8 1010.5 1005.2 1002.2 1003.1 1007.9 1014.1 1017.2 1015.7 1010.9 MAX. QNH PRESSURE IN HPA 1021.1 1020.5 1016.8 1017.2 1014.4 1009.4 1005.5 1008.3 1015.0 1019.2 1020.0 1023.4 1023.4 DAY 3 3 26 26 22 21 21 29 23 29 1 30 MIN. QNH PRESSURE IN HPA 1006.1 1007.7 1006.5 998.8 1006.5 1000.6 999.8 999.9 1002.5 1008.7 1013.4 1007.8 998.8 DAY 22 23 19 19 29 30 8 7 1 9 23 13 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 882.9 883.5 881.2 881.7 879.6 874.9 872.4 873.0 877.0 882.5 885.5 884.4 879.9 MAX. QFE PRESSURE IN HPA 888.8 888.7 885.3 885.5 883.2 878.7 875.0 877.8 883.1 887.6 887.0 891.9 891.9 DAY 3 3 27 26 22 21 20 29 23 31 1 31 MIN. QFE PRESSURE IN HPA 875.0 876.6 875.9 869.4 875.8 871.7 870.0 870.4 872.3 877.6 883.3 877.0 869.4 DAY 22 23 19 19 30 30 16 7 1 5 28 13 MEAN QNH PRESSURE IN HPA 1013.1 1013.8 1011.2 1011.8 1009.4 1004.2 1001.4 1002.0 1006.6 1012.7 1016.0 1014.8 1009.8 MAX. QNH PRESSURE IN HPA 1019.7 1019.6 1015.8 1016.0 1013.5 1008.4 1004.3 1007.4 1013.4 1018.4 1017.7 1023.2 1023.2 DAY 3 3 27 26 22 21 20 29 23 31 1 31 MIN. QNH PRESSURE IN HPA 1004.3 1006.1 1005.3 998.0 1005.2 1000.6 998.7 999.2 1001.3 1007.2 1013.6 1006.5 998.0 DAY 22 23 19 19 30 30 16 7 1 5 28 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 881.9 881.9 879.9 880.5 878.6 873.8 871.7 871.9 875.7 881.2 884.0 882.9 878.7 MAX. QFE PRESSURE IN HPA 887.4 886.7 884.0 883.4 881.8 876.9 873.7 876.0 881.8 886.3 886.3 889.8 889.8 DAY 3 3 27 5 12 21 25 29 27 31 14 31 MIN. QFE PRESSURE IN HPA 873.8 875.3 873.8 872.8 874.9 871.0 869.0 869.6 871.2 876.7 881.8 876.6 869.0 DAY 22 23 19 19 30 9 17 20 1 5 23 13 MEAN QNH PRESSURE IN HPA 1012.0 1012.0 1009.7 1010.5 1008.3 1003.0 1000.6 1000.8 1005.1 1011.3 1014.4 1013.1 1008.4 MAX. QNH PRESSURE IN HPA 1018.2 1017.4 1014.4 1013.7 1011.9 1006.4 1002.9 1005.4 1011.9 1016.9 1016.9 1020.9 1020.9 DAY 3 3 27 5 12 21 25 29 27 31 14 31 MIN. QNH PRESSURE IN HPA 1003.0 1004.6 1003.0 1001.8 1004.2 999.8 997.6 998.3 1000.1 1006.2 1011.9 1006.1 997.6 DAY 22 23 19 19 30 9 17 20 1 5 23 13 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 882.3 882.1 879.9 880.4 878.4 873.4 871.4 871.8 875.7 881.2 884.1 883.2 878.6 MAX. QFE PRESSURE IN HPA 887.7 887.0 883.7 883.6 881.3 876.6 873.4 875.3 881.8 886.5 886.3 890.4 890.4 DAY 3 7 25 8 12 21 26 28 27 31 14 30 MIN. QFE PRESSURE IN HPA 875.0 876.0 873.4 872.2 874.5 870.8 869.0 869.6 870.5 876.7 881.8 877.0 869.0 DAY 22 23 19 19 30 9 7 20 1 5 23 12 MEAN QNH PRESSURE IN HPA 1012.5 1012.3 1009.8 1010.4 1008.1 1002.5 1000.2 1000.7 1005.0 1011.2 1014.4 1013.4 1008.4 MAX. QNH PRESSURE IN HPA 1018.5 1017.7 1014.0 1013.9 1011.3 1006.1 1002.5 1004.6 1011.9 1017.2 1016.9 1021.5 1021.5 DAY 3 7 25 8 12 21 26 28 27 31 14 30 MIN. QNH PRESSURE IN HPA 1004.3 1005.4 1002.5 1001.2 1003.7 999.6 997.6 998.3 999.3 1006.2 1011.9 1006.5 997.6 DAY 22 23 19 19 30 9 7 20 1 5 23 12 MEAN QFF PRESSURE IN HPA 1013.7 1012.1 1008.0 1005.6 1001.6 993.4 990.2 991.4 997.4 1006.3 1011.4 1014.5 1003.8 MAX. QFF PRESSURE IN HPA 1019.9 1018.8 1013.4 1011.0 1007.0 997.1 994.2 996.5 1004.6 1013.2 1014.1 1024.4 1024.4 DAY 3 3 25 25 12 21 26 28 27 31 29 15 MIN. QFF PRESSURE IN HPA 1006.0 1005.3 999.4 994.9 996.0 989.6 986.4 988.4 990.5 999.8 1008.7 1006.7 986.4 DAY 22 23 19 19 30 30 7 20 1 5 9 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 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 M MEANS AND EXTREMES FOR THE YEAR 1971 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 8.0 7.6 12.9 15.5 23.8 28.1 32.9 30.5 27.5 20.3 13.2 7.5 19.0 MINIMUN AIR TEMPERATURE (C) 1.5 1.5 6.0 8.0 13.5 15.6 21.6 19.2 15.7 9.4 7.5 3.1 10.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 20 6 1 0 0 0 27 DAYS WITH MINIMUM TEMP. <=-4 0 3 0 0 0 0 0 0 0 0 0 3 6 DAYS WITH FREEZING MIN.<= 0 7 10 1 0 0 0 0 0 0 0 0 7 25 TEMPERATURE RECORDS LOWEST(C) -3.0 -4.0 -2.0 2.0 11.0 12.0 17.0 16.0 11.0 7.0 3.0 -5.0 -5.0 DAY 31 3 16 19 3 4 2 31 27 19 15 22 MAXIMUM AIR TEMPERATURE (C) 14.0 13.0 18.7 20.5 29.4 34.6 39.8 37.8 35.4 28.1 18.1 12.5 25.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 17 27 31 31 30 10 0 0 146 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 24.0 21.0 24.0 29.0 34.0 38.0 43.0 41.0 40.0 33.0 27.0 20.0 43.0 DAY 3 20 18 29 31 14 12 21 10 11 1 3 DIF. BETWEEN (MAX.-MIN.) (C) 12.5 11.5 12.7 12.5 15.9 19.0 18.2 18.6 19.7 18.7 10.6 9.4 15.0 MEAN DAILY TEMP. (MDT) (C) 7.8 7.3 12.3 14.3 21.4 25.1 30.7 28.5 25.6 18.8 12.8 7.8 17.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 26.5 124.5 302.0 232.5 137.0 4.0 0.0 0.0 826.5 HEATING DEG. DAYS(BASE 18 0C) 317.5 300.0 175.5 118.0 1.0 0.0 0.0 0.0 0.0 15.5 156.5 317.0 1401.0 DEWPOINT (MEAN C) -0.8 -0.9 2.2 5.4 8.2 7.2 9.1 8.7 6.4 4.4 5.8 0.4 4.7 MIXING RATIO (G/KG) 4.21 4.25 5.28 6.53 7.88 7.43 8.59 8.32 7.22 6.12 6.63 4.61 6.42 VAPOUR PRESSURE (HPA) 5.94 5.96 7.41 9.13 11.00 10.31 11.88 11.53 10.08 8.61 9.34 6.48 8.97 SATURATION DEF. (HPA) 5.62 5.11 8.17 9.53 19.94 30.36 41.03 34.82 29.34 17.22 6.53 4.47 17.68 RELATIVE HUMIDITY (MEAN %) 58 58 52 55 40 29 24 27 28 38 64 63 45 RELATIVE HUMIDITY (MAX. %) 75 73 70 80 64 45 35 39 40 52 83 79 61 RELATIVE HUMIDITY (MIN. %) 45 46 38 40 27 20 18 19 20 28 49 49 33 RELATIVE HUMIDITY (MEAN% 03UTC) 72 66 67 79 63 45 34 39 37 51 80 76 59 RELATIVE HUMIDITY (MEAN% 09UTC) 50 53 45 47 33 25 22 25 23 31 53 54 38 RELATIVE HUMIDITY (MEAN% 15UTC) 55 56 46 45 31 22 19 21 24 33 60 58 39 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 40.8 64.4 161.4 113.8 14.0 0.0 0.0 4.0 0.0 17.0 108.6 65.0 589.0 DAYS WITH PRECIPITATION >=10 1 2 4 4 1 0 0 0 0 1 3 2 18 DAYS WITH PRECIPITATION >= 5 3 4 5 5 1 0 0 0 0 2 7 6 33 DAYS WITH PRECIPITATION >= 1 9 9 10 13 4 0 0 1 0 2 14 11 73 DAYS WITH PRECIPITATION 11 10 12 16 5 0 0 1 0 2 14 12 83 GREATEST DAILY PRECIPITATION 14.0 26.0 46.0 28.0 10.0 0.0 0.0 4.0 0.0 12.0 27.0 21.0 46.0 DAY 17 13 15 1 7 ** ** 2 ** 26 19 29 DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH SNOW OR SLEET 0 1 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH DUST 0 2 4 1 0 2 0 0 0 0 0 2 11 WIND DIRECTION (PREVAILING) 225 225 225 180 225 225 225 180 225 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 11.8 15.0 12.4 9.2 14.9 11.6 12.2 11.7 12.0 12.7 9.4 9.5 12.6 PREVAILING WIND PERCENT 5.2 8.6 10.3 17.3 12.3 19.3 20.6 17.4 16.0 14.8 12.0 7.1 13.0 CALMS PERCENT OF WIND 80.0 73.6 59.4 57.3 69.7 64.0 66.5 61.9 70.7 70.3 73.3 78.7 68.8 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 162 191 215 204 218 226 215 203 210 224 198 204 210 VECTOR WIND MAGNITUDE(KNOTS) 0.5 1.6 1.3 2.9 2.0 3.1 2.6 4.3 1.8 2.4 1.8 0.9 2.0 WIND STEADINESES (MEAN %) 25.0 44.4 25.5 64.4 55.6 77.5 72.2 87.8 51.4 68.6 72.0 42.9 55.6 WIND SPEED (MEAN KNOTS) 2.0 3.6 5.1 4.5 3.6 4.0 3.6 4.9 3.5 3.5 2.5 2.1 3.6 FASTEST WIND DIRECTION 90 240 220 210 240 250 240 210 180 270 210 240 90 FASTEST WIND SPEED (KNOTS) 30 30 30 30 30 25 24 30 20 30 20 20 30 DAY 24 11 19 5 12 5 15 14 2 5 4 24 DAYS WITH SKY CLEAR (0-2)/8 17 13 10 13 14 30 30 31 30 28 11 13 240 DAYS WITH P.CLOUDY (3-6)/8 3 7 10 11 15 0 1 0 0 2 10 7 66 DAYS WITH CLOUDY (7-8)/8 11 8 11 6 2 0 0 0 0 1 9 11 59 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 0 1 0 0 0 0 0 0 1 DURATION OF SUNSHINE HOURS 177.3 156.8 173.6 193.9 271.2 352.6 334.9 333.2 307.1 280.1 164.0 163.8 2908.5 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 884.3 879.9 882.5 879.1 879.0 873.4 872.5 873.9 879.9 883.7 884.9 882.5 879.6 MAX. QFE PRESSURE IN HPA 893.2 890.3 888.8 885.1 883.8 878.0 877.0 878.1 886.6 888.2 893.2 889.8 893.2 DAY-HOUR 5- 6 16- 6 16- 6 27- 6 7- 6 1- 6 11- 3 22- 6 23- 6 31- 6 20- 6 11- 6 MIN. QFE PRESSURE IN HPA 876.5 863.6 875.0 868.0 874.3 870.0 869.3 868.6 875.0 878.6 878.8 876.1 863.6 DAY-HOUR 13-12 13-12 20-12 13- 3 29-15 24-12 8-15 9- 9 3-12 1-12 18-12 7-12 MEAN QNH PRESSURE IN HPA 1014.7 1009.8 1012.7 1008.8 1008.8 1002.5 1001.5 1003.1 1009.8 1014.0 1015.4 1012.7 1009.5 MAX. QNH PRESSURE IN HPA 1024.7 1021.4 1019.7 1015.6 1014.1 1007.7 1006.5 1007.8 1017.3 1019.1 1024.7 1020.9 1024.7 DAY-HOUR 5- 6 16- 6 16- 6 27- 6 7- 6 1- 6 11- 3 22- 6 23- 6 31- 6 20- 6 11- 6 MIN. QNH PRESSURE IN HPA 1006.0 991.6 1004.3 996.5 1003.5 998.7 997.9 997.1 1004.3 1008.3 1008.6 1005.5 991.6 DAY-HOUR 13-12 13-12 20-12 13- 3 29-15 24-12 8-15 9- 9 3-12 1-12 18-12 7-12 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 885.0 880.2 882.8 879.4 879.5 874.4 873.5 875.1 880.7 884.4 885.3 882.8 880.3 MAX. QFE PRESSURE IN HPA 892.9 888.0 887.8 884.1 883.1 877.8 877.0 878.0 885.1 887.7 892.2 889.1 892.9 DAY 5 16 17 20 7 1 11 22 23 31 20 11 MIN. QFE PRESSURE IN HPA 878.6 868.0 876.6 868.0 876.0 871.6 871.6 870.8 876.6 880.0 879.0 877.8 868.0 DAY 22 13 20 13 11 12 4 10 1 1 18 20 MEAN QNH PRESSURE IN HPA 1015.5 1010.1 1013.0 1009.3 1009.3 1003.7 1002.7 1004.4 1010.7 1014.8 1015.9 1013.0 1010.2 MAX. QNH PRESSURE IN HPA 1024.3 1018.8 1018.6 1014.5 1013.4 1007.4 1006.5 1007.7 1015.6 1018.5 1023.5 1020.1 1024.3 DAY 5 16 17 20 7 1 11 22 23 31 20 11 MIN. QNH PRESSURE IN HPA 1008.3 996.5 1006.1 996.5 1005.4 1000.5 1000.5 999.6 1006.1 1009.9 1008.8 1007.4 996.5 DAY 22 13 20 13 11 12 4 10 1 1 18 20 MEAN QFF PRESSURE IN HPA 1016.4 1011.0 1011.2 1006.2 1002.8 995.4 992.2 995.0 1002.9 1010.4 1013.9 1013.6 1005.9 MAX. QFF PRESSURE IN HPA 1025.3 1021.9 1020.9 1013.7 1008.2 999.7 996.2 998.6 1009.2 1015.2 1023.1 1019.8 1025.3 DAY 1 16 16 20 7 1 11 25 22 31 20 11 MIN. QFF PRESSURE IN HPA 1008.6 998.2 1003.4 991.8 998.1 991.9 989.7 990.6 998.0 1004.4 1005.6 1006.7 989.7 DAY 22 13 20 13 11 28 13 10 1 2 7 7 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMABAD (40782) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 26 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1147.8 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 885.7 881.2 883.7 880.0 879.9 874.4 873.7 875.2 881.2 884.9 886.2 883.7 880.8 MAX. QFE PRESSURE IN HPA 893.2 890.3 888.8 885.1 883.8 878.0 877.0 878.1 886.6 888.2 893.2 889.8 893.2 DAY 5 16 16 27 7 1 11 22 23 31 20 11 MIN. QFE PRESSURE IN HPA 878.8 867.3 876.6 870.0 876.4 871.3 871.1 871.0 877.5 880.2 880.4 878.1 867.3 DAY 22 13 20 13 29 28 17 9 1 1 18 7 MEAN QNH PRESSURE IN HPA 1016.3 1011.2 1014.1 1009.9 1009.8 1003.7 1002.8 1004.5 1011.3 1015.4 1016.8 1014.0 1010.8 MAX. QNH PRESSURE IN HPA 1024.7 1021.4 1019.7 1015.6 1014.1 1007.7 1006.5 1007.8 1017.3 1019.1 1024.7 1020.9 1024.7 DAY 5 16 16 27 7 1 11 22 23 31 20 11 MIN. QNH PRESSURE IN HPA 1008.6 995.7 1006.1 998.7 1005.9 1000.2 999.9 999.8 1007.1 1010.1 1010.3 1007.8 995.7 DAY 22 13 20 13 29 28 17 9 1 1 18 7 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 884.6 880.4 883.1 879.5 879.3 873.6 872.6 873.8 880.2 883.8 885.0 882.7 879.9 MAX. QFE PRESSURE IN HPA 891.8 888.9 888.8 884.1 883.0 877.1 876.0 876.6 886.0 887.1 891.0 888.8 891.8 DAY 5 16 16 21 7 1 25 24 23 31 20 11 MIN. QFE PRESSURE IN HPA 878.5 864.7 876.0 871.6 875.0 870.9 870.6 868.6 876.5 879.0 879.6 877.0 864.7 DAY 13 13 20 13 28 28 17 9 1 1 18 7 MEAN QNH PRESSURE IN HPA 1015.0 1010.3 1013.3 1009.4 1009.1 1002.7 1001.6 1003.0 1010.1 1014.1 1015.5 1012.9 1009.8 MAX. QNH PRESSURE IN HPA 1023.1 1019.8 1019.7 1014.5 1013.2 1006.7 1005.4 1006.1 1016.6 1017.8 1022.2 1019.7 1023.1 DAY 5 16 16 21 7 1 25 24 23 31 20 11 MIN. QNH PRESSURE IN HPA 1008.2 992.8 1005.4 1000.5 1004.3 999.7 999.4 997.1 1006.0 1008.8 1009.4 1006.5 992.8 DAY 13 13 20 13 28 28 17 9 1 1 18 7 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 882.9 878.9 881.5 878.2 878.3 872.4 871.5 872.7 878.7 882.7 883.9 881.6 878.6 MAX. QFE PRESSURE IN HPA 890.0 887.0 888.1 883.1 882.6 875.7 875.0 875.0 883.6 886.2 890.2 888.1 890.2 DAY 4 16 16 27 7 1 25 21 23 26 20 11 MIN. QFE PRESSURE IN HPA 876.5 863.6 875.0 870.6 874.8 870.0 869.8 868.6 875.0 878.6 878.8 876.1 863.6 DAY 13 13 20 24 29 24 8 9 3 1 18 7 MEAN QNH PRESSURE IN HPA 1013.2 1008.7 1011.5 1007.8 1008.0 1001.4 1000.4 1001.7 1008.5 1012.9 1014.3 1011.7 1008.4 MAX. QNH PRESSURE IN HPA 1021.1 1017.7 1019.0 1013.4 1012.8 1005.1 1004.3 1004.3 1013.9 1016.8 1021.3 1019.0 1021.3 DAY 4 16 16 27 7 1 25 21 23 26 20 11 MIN. QNH PRESSURE IN HPA 1006.0 991.6 1004.3 999.4 1004.1 998.7 998.5 997.1 1004.3 1008.3 1008.6 1005.5 991.6 DAY 13 13 20 24 29 24 8 9 3 1 18 7 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****