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