STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 0.6 1.9 1.9 10.6 14.2 19.3 24.1 22.6 21.5 15.4 4.6 -2.3 11.2 MINIMUN AIR TEMPERATURE (C) -4.0 -2.6 -3.0 5.3 7.4 11.3 15.8 13.8 10.3 7.1 1.0 -6.6 4.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 13 12 12 0 0 0 0 0 0 0 2 22 61 DAYS WITH FREEZING MIN.<= 0 26 22 24 0 0 0 0 0 0 0 15 27 114 TEMPERATURE RECORDS LOWEST(C) -12.1 -9.2 -9.8 1.0 3.6 7.8 11.2 10.0 5.0 3.2 -4.2 -15.0 -15.0 DAY 25 17 21 6 7 22 2 31 30 29 21 13 MAXIMUM AIR TEMPERATURE (C) 6.0 6.6 7.5 16.6 21.0 27.0 31.8 29.9 27.9 21.1 8.7 2.3 17.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 6 26 16 6 0 0 0 54 DAYS WITH MAXIMUM TEMP. <= 0 4 0 3 0 0 0 0 0 0 0 0 8 15 TEMPERATURE RECORDS HIGHEST(C) 10.2 14.8 16.0 21.2 27.2 35.8 36.2 36.0 30.8 26.6 20.4 9.4 36.2 DAY 9 28 30 15 31 30 31 1 3 2 1 27 DIF. BETWEEN (MAX.-MIN.) (C) 10.0 9.2 10.5 11.3 13.6 15.7 16.0 16.1 17.6 14.0 7.7 8.9 12.5 MEAN DAILY TEMP. (MDT) (C) 1.0 2.0 2.3 10.9 14.2 19.1 23.8 21.8 19.1 14.1 4.9 -2.2 10.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 14.0 93.2 41.9 1.8 0.0 0.0 0.0 150.9 HEATING DEG. DAYS(BASE 18 0C) 526.9 447.3 487.5 212.3 121.1 18.3 0.0 0.0 6.0 122.7 394.3 624.7 2961.1 DEWPOINT (MEAN C) -7.0 -3.7 -4.9 3.1 4.2 5.4 6.8 5.9 1.8 3.2 -0.2 -6.6 0.7 MIXING RATIO (G/KG) 2.82 3.54 3.30 5.85 6.38 6.88 7.61 7.20 5.39 5.87 4.59 2.89 5.19 VAPOUR PRESSURE (HPA) 3.79 4.75 4.44 7.83 8.53 9.16 10.14 9.63 7.26 7.90 6.17 3.89 6.96 SATURATION DEF. (HPA) 2.91 2.52 3.01 5.35 8.54 14.57 21.47 19.27 19.81 10.42 2.78 1.57 9.35 RELATIVE HUMIDITY (MEAN %) 60 70 66 65 57 46 36 38 31 48 74 73 55 RELATIVE HUMIDITY (MAX. %) 77 88 84 86 84 70 56 58 51 74 87 87 75 RELATIVE HUMIDITY (MIN. %) 40 50 47 39 31 25 21 23 20 31 58 58 37 RELATIVE HUMIDITY (MEAN% 03UTC) 68 82 79 83 75 64 52 57 50 73 83 80 71 RELATIVE HUMIDITY (MEAN% 09UTC) 45 58 53 47 38 28 26 26 22 35 63 63 42 RELATIVE HUMIDITY (MEAN% 15UTC) 55 63 57 53 44 34 29 34 29 46 76 73 49 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 1.7 48.8 48.8 56.2 73.4 0.7 0.2 8.8 2.1 24.8 94.9 20.1 380.5 DAYS WITH PRECIPITATION >=10 0 2 2 2 3 0 0 0 0 1 2 0 12 DAYS WITH PRECIPITATION >= 5 0 5 5 5 6 0 0 1 0 1 6 2 31 DAYS WITH PRECIPITATION >= 1 0 5 9 8 11 0 0 1 1 4 11 3 53 DAYS WITH PRECIPITATION 5 12 14 17 19 7 1 6 2 10 16 13 122 GREATEST DAILY PRECIPITATION 0.8 19.0 11.0 12.0 14.0 0.3 0.2 8.0 2.0 18.0 31.0 8.0 31.0 DAY 31 15 24 1 21 20 21 25 18 24 29 28 DAY WITH THUNDER STORM 0 0 0 5 14 4 0 5 1 5 1 1 36 DAYS WITH SNOW OR SLEET 3 9 12 0 0 0 0 0 0 0 7 12 43 DAYS WITH DUST 0 0 0 1 0 1 0 0 1 1 0 1 5 WIND DIRECTION (PREVAILING) 315 315 360 315 315 360 360 360 315 315 135 315 315 PREVAILING WIND SPEED(KNOTS) 5.8 5.6 13.6 6.7 5.5 11.1 11.4 12.2 6.1 5.7 6.2 5.8 5.7 PREVAILING WIND PERCENT 34.7 25.4 16.9 17.9 14.9 21.7 19.0 25.7 17.3 16.1 17.3 36.7 19.3 CALMS PERCENT OF WIND 21.4 30.4 33.1 37.5 33.5 23.8 20.2 18.9 20.0 29.7 44.5 28.6 28.4 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 206 150 155 173 248 2628 VECTOR WIND DIRECTION (MEAN) 301 278 25 348 263 20 42 29 1 279 59 311 357 VECTOR WIND MAGNITUDE(KNOTS) 3.5 1.3 3.3 1.5 1.1 3.5 3.5 4.2 2.5 0.7 0.7 3.3 1.8 WIND STEADINESES (MEAN %) 63.6 30.2 54.1 33.3 25.0 49.3 50.7 58.3 39.1 14.0 20.0 66.0 32.7 WIND SPEED (MEAN KNOTS) 5.5 4.3 6.1 4.5 4.4 7.1 6.9 7.2 6.4 5.0 3.5 5.0 5.5 FASTEST WIND DIRECTION 240 120 10 30 180 20 10 20 30 190 20 280 10 FASTEST WIND SPEED (KNOTS) 29 29 39 29 33 31 31 39 33 31 19 33 39 DAY 16 6 8 4 22 19 21 3 29 23 5 21 DAYS WITH SKY CLEAR (0-2)/8 14 8 7 3 13 24 26 24 26 16 5 14 180 DAYS WITH P.CLOUDY (3-6)/8 12 11 10 16 14 6 5 7 4 13 13 12 123 DAYS WITH CLOUDY (7-8)/8 5 9 14 11 4 0 0 0 0 2 12 5 62 DAYS WITH VISIBILITY =< 2 KM 0 5 3 1 2 0 0 0 0 0 5 2 18 DURATION OF SUNSHINE HOURS 204.6 166.9 145.6 158.7 269.9 332.3 336.0 328.8 303.6 221.8 128.1 184.5 2780.8 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 842.3 840.0 840.9 841.4 840.9 837.7 840.0 841.4 844.9 845.7 843.5 843.1 841.8 MAX. QFE PRESSURE IN HPA 848.8 847.3 848.5 848.5 848.3 844.8 844.8 845.1 849.6 852.0 850.1 854.1 854.1 DAY-HOUR 23-18 22- 6 27-18 5- 6 20-18 2- 6 15- 6 25- 6 22- 6 15- 6 16- 6 7- 6 MIN. QFE PRESSURE IN HPA 828.1 833.8 835.0 836.5 833.3 832.5 834.2 836.3 840.3 837.6 835.9 831.5 828.1 DAY-HOUR 19-18 6-12 8- 3 11-12 3- 0 17-15 24-15 6-15 5-15 1-12 10-12 27-15 MEAN QNH PRESSURE IN HPA 1018.2 1015.5 1016.6 1017.1 1016.6 1012.9 1015.5 1017.2 1021.2 1022.1 1019.6 1019.2 1017.7 MAX. QNH PRESSURE IN HPA 1025.8 1024.0 1025.4 1025.4 1025.2 1021.1 1021.1 1021.5 1026.7 1029.5 1027.3 1032.0 1032.0 DAY-HOUR 23-18 22- 6 27-18 5- 6 20-18 2- 6 15- 6 25- 6 22- 6 15- 6 16- 6 7- 6 MIN. QNH PRESSURE IN HPA 1001.7 1008.3 1009.7 1011.4 1007.7 1006.8 1008.8 1011.2 1015.9 1012.7 1010.8 1005.6 1001.7 DAY-HOUR 19-18 6-12 8- 3 11-12 3- 0 17-15 24-15 6-15 5-15 1-12 10-12 27-15 MEAN QFF PRESSURE IN HPA 1021.0 1017.4 1018.4 1012.9 1009.9 1002.9 1002.7 1005.5 ****** ****** ****** 1024.1 ****** MAX. QFF PRESSURE IN HPA 1035.0 1024.1 1029.7 1024.4 1018.9 1012.5 1010.4 1014.2 ****** ****** ****** 1042.1 ****** DAY-HOUR 24- 6 13- 3 16-21 5- 6 18- 3 3- 3 15- 3 25- 3 **-** **-** **-** 7- 3 MIN. QFF PRESSURE IN HPA 1002.0 1007.5 1009.2 1006.8 1003.0 993.9 995.3 999.7 ****** ****** ****** 1004.1 ****** DAY-HOUR 19-18 6-12 6-15 3-12 3- 0 29-15 19-12 15-12 **-** **-** **-** 27-15 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 842.5 839.9 840.8 841.1 840.7 838.0 840.0 840.9 ****** ****** ****** 843.0 ****** MAX. QFE PRESSURE IN HPA 848.1 845.7 848.0 846.6 846.2 844.3 843.1 843.2 ****** ****** ****** 853.6 ****** DAY 5 22 28 5 20 3 15 1 ** ** ** 7 MIN. QFE PRESSURE IN HPA 830.5 835.7 835.4 836.7 833.3 834.5 835.7 837.8 ****** ****** ****** 836.0 ****** DAY 20 6 8 11 3 27 20 15 ** ** ** 30 MEAN QNH PRESSURE IN HPA 1018.5 1015.4 1016.4 1016.8 1016.4 1013.2 1015.5 1016.6 ****** ****** ****** 1019.0 ****** MAX. QNH PRESSURE IN HPA 1025.0 1022.2 1024.9 1023.2 1022.8 1020.5 1019.2 1019.3 ****** ****** ****** 1031.4 ****** DAY 5 22 28 5 20 3 15 1 ** ** ** 7 MIN. QNH PRESSURE IN HPA 1004.4 1010.5 1010.2 1011.7 1007.7 1009.1 1010.5 1013.0 ****** ****** ****** 1010.9 ****** DAY 20 6 8 11 3 27 20 15 ** ** ** 30 MEAN QFF PRESSURE IN HPA 1020.4 1017.0 1017.9 1012.5 1009.8 1003.3 1002.3 1004.5 ****** ****** ****** 1023.5 ****** MAX. QFF PRESSURE IN HPA 1032.9 1022.5 1028.6 1021.4 1016.8 1011.0 1008.8 1008.3 ****** ****** ****** 1040.4 ****** DAY 24 22 17 5 18 3 22 4 ** ** ** 7 MIN. QFF PRESSURE IN HPA 1006.2 1010.1 1010.4 1008.1 1003.0 995.5 996.8 1000.2 ****** ****** ****** 1010.5 ****** DAY 20 25 6 30 3 29 20 16 ** ** ** 28 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 842.5 840.0 841.0 841.6 841.4 838.5 841.0 842.4 845.5 846.0 843.8 843.1 842.2 MAX. QFE PRESSURE IN HPA 847.9 846.1 847.9 846.3 846.7 844.8 844.5 844.9 848.7 850.9 849.4 853.6 853.6 DAY 24 22 28 5 20 3 15 25 22 15 16 7 MIN. QFE PRESSURE IN HPA 832.1 835.3 835.0 837.0 834.7 835.0 836.6 838.7 842.1 841.6 837.5 835.1 832.1 DAY 20 6 8 11 3 17 20 15 6 1 8 30 MEAN QNH PRESSURE IN HPA 1018.4 1015.6 1016.7 1017.3 1017.1 1013.8 1016.6 1018.3 1022.0 1022.5 1020.0 1019.1 1018.1 MAX. QNH PRESSURE IN HPA 1024.7 1022.6 1024.7 1022.9 1023.3 1021.1 1020.8 1021.2 1025.7 1028.2 1026.5 1031.4 1031.4 DAY 24 22 28 5 20 3 15 25 22 15 16 7 MIN. QNH PRESSURE IN HPA 1006.3 1010.1 1009.7 1012.0 1009.4 1009.7 1011.6 1014.0 1018.0 1017.4 1012.6 1009.8 1006.3 DAY 20 6 8 11 3 17 20 15 6 1 8 30 MEAN QFF PRESSURE IN HPA 1021.8 1018.1 1019.1 1013.7 1010.9 1004.5 1004.7 1008.0 1013.9 1017.5 1020.7 1024.6 1014.8 MAX. QFF PRESSURE IN HPA 1034.4 1024.1 1029.4 1021.9 1018.9 1012.5 1010.4 1014.2 1019.7 1025.2 1029.8 1042.1 1042.1 DAY 24 13 17 5 18 3 15 25 30 15 21 7 MIN. QFF PRESSURE IN HPA 1008.6 1010.7 1011.0 1009.0 1004.9 996.8 998.5 1002.9 1009.2 1009.4 1009.8 1011.0 996.8 DAY 12 6 10 11 3 29 20 15 4 2 8 30 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 843.3 840.8 841.8 842.3 841.6 838.6 841.2 842.8 846.2 846.8 844.5 843.9 842.8 MAX. QFE PRESSURE IN HPA 848.7 847.3 848.5 848.5 847.1 844.8 844.8 845.1 849.6 852.0 850.1 854.1 854.1 DAY 5 22 28 5 20 2 15 25 22 15 16 7 MIN. QFE PRESSURE IN HPA 833.2 835.5 836.1 837.5 835.0 834.9 836.6 839.3 842.9 841.7 838.2 835.4 833.2 DAY 20 6 8 11 3 17 20 6 15 1 8 30 MEAN QNH PRESSURE IN HPA 1019.4 1016.5 1017.6 1018.2 1017.4 1013.9 1016.9 1018.8 1022.8 1023.5 1020.8 1020.0 1018.8 MAX. QNH PRESSURE IN HPA 1025.7 1024.0 1025.4 1025.4 1023.8 1021.1 1021.1 1021.5 1026.7 1029.5 1027.3 1032.0 1032.0 DAY 5 22 28 5 20 2 15 25 22 15 16 7 MIN. QNH PRESSURE IN HPA 1007.6 1010.3 1011.0 1012.6 1009.7 1009.6 1011.6 1014.7 1018.9 1017.5 1013.4 1010.2 1007.6 DAY 20 6 8 11 3 17 20 6 15 1 8 30 MEAN QFF PRESSURE IN HPA 1022.7 1018.4 1019.6 1014.0 1010.7 1003.8 1003.9 1006.3 ****** ****** ****** 1025.4 ****** MAX. QFF PRESSURE IN HPA 1035.0 1023.9 1027.6 1024.4 1018.3 1011.6 1009.3 1010.5 ****** ****** ****** 1041.1 ****** DAY 24 19 17 5 18 2 15 4 ** ** ** 7 MIN. QFF PRESSURE IN HPA 1009.6 1011.0 1013.4 1008.3 1004.5 995.7 996.9 1001.8 ****** ****** ****** 1010.5 ****** DAY 12 6 6 30 3 28 20 15 ** ** ** 30 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 842.3 840.3 841.2 841.7 841.0 837.8 840.4 841.9 845.1 845.7 843.5 843.0 842.0 MAX. QFE PRESSURE IN HPA 847.6 847.0 848.4 848.4 846.8 844.5 843.6 844.4 848.3 850.3 849.0 851.8 851.8 DAY 28 22 27 5 19 2 15 30 22 15 15 7 MIN. QFE PRESSURE IN HPA 831.9 834.5 836.8 837.4 834.7 833.8 836.0 838.2 842.2 840.1 837.2 834.0 831.9 DAY 20 6 20 11 3 17 20 15 15 1 7 27 MEAN QNH PRESSURE IN HPA 1018.2 1015.8 1016.9 1017.5 1016.7 1013.0 1016.0 1017.8 1021.5 1022.2 1019.6 1019.0 1017.9 MAX. QNH PRESSURE IN HPA 1024.4 1023.7 1025.3 1025.3 1023.5 1020.8 1019.7 1020.7 1025.2 1027.5 1026.0 1029.3 1029.3 DAY 28 22 27 5 19 2 15 30 22 15 15 7 MIN. QNH PRESSURE IN HPA 1006.1 1009.1 1011.8 1012.5 1009.4 1008.3 1010.9 1013.4 1018.1 1015.7 1012.3 1008.5 1006.1 DAY 20 6 20 11 3 17 20 15 15 1 7 27 MEAN QFF PRESSURE IN HPA 1020.3 1017.4 1018.3 1012.8 1009.8 1002.6 1002.6 1004.9 ****** ****** ****** 1023.5 ****** MAX. QFF PRESSURE IN HPA 1031.0 1023.7 1026.4 1024.2 1016.8 1011.2 1007.6 1007.4 ****** ****** ****** 1036.1 ****** DAY 24 19 16 5 18 2 22 4 ** ** ** 7 MIN. QFF PRESSURE IN HPA 1006.9 1008.8 1011.4 1007.3 1003.3 995.4 996.7 1000.4 ****** ****** ****** 1007.6 ****** DAY 12 6 1 30 3 27 20 15 ** ** ** 27 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 841.4 839.2 840.1 840.6 840.2 836.7 839.0 840.5 843.7 844.7 842.7 842.4 840.9 MAX. QFE PRESSURE IN HPA 846.9 845.6 847.2 847.0 845.3 843.4 842.2 843.1 846.8 849.7 848.3 850.5 850.5 DAY 28 22 27 5 19 2 15 31 27 14 15 7 MIN. QFE PRESSURE IN HPA 829.9 833.8 836.4 836.5 834.8 832.8 834.5 836.7 840.3 837.6 835.9 832.0 829.9 DAY 19 6 9 11 3 17 24 6 15 1 10 27 MEAN QNH PRESSURE IN HPA 1017.2 1014.6 1015.6 1016.3 1015.7 1011.7 1014.4 1016.1 1019.9 1021.0 1018.7 1018.4 1016.6 MAX. QNH PRESSURE IN HPA 1023.6 1022.1 1023.9 1023.7 1021.7 1019.5 1018.1 1019.2 1023.5 1026.8 1025.2 1027.8 1027.8 DAY 28 22 27 5 19 2 15 31 27 14 15 7 MIN. QNH PRESSURE IN HPA 1003.8 1008.3 1011.3 1011.4 1009.5 1007.1 1009.1 1011.7 1015.9 1012.7 1010.8 1006.2 1003.8 DAY 19 6 9 11 3 17 24 6 15 1 10 27 MEAN QFF PRESSURE IN HPA 1019.3 1016.0 1017.1 1011.9 1009.1 1001.7 1001.3 1003.3 ****** ****** ****** 1022.7 ****** MAX. QFF PRESSURE IN HPA 1030.0 1022.6 1026.1 1022.5 1015.5 1010.0 1005.3 1006.7 ****** ****** ****** 1035.0 ****** DAY 23 13 16 5 17 2 15 4 ** ** ** 7 MIN. QFF PRESSURE IN HPA 1004.3 1007.5 1009.5 1006.8 1003.2 994.2 995.3 999.7 ****** ****** ****** 1005.1 ****** DAY 19 6 6 3 31 28 19 15 ** ** ** 27 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 842.0 839.6 840.3 840.7 840.1 836.4 838.7 840.4 843.8 845.1 843.2 843.1 841.1 MAX. QFE PRESSURE IN HPA 847.8 845.1 847.7 846.4 845.2 842.8 842.1 844.1 846.7 850.3 849.1 851.2 851.2 DAY 23 22 27 5 19 2 15 24 7 14 15 6 MIN. QFE PRESSURE IN HPA 829.3 835.1 836.2 836.7 834.7 832.5 834.2 836.3 840.3 838.5 836.1 831.5 829.3 DAY 19 15 9 10 3 17 24 6 5 1 8 27 MEAN QNH PRESSURE IN HPA 1017.9 1015.1 1015.9 1016.3 1015.6 1011.4 1014.0 1016.0 1019.9 1021.5 1019.3 1019.1 1016.8 MAX. QNH PRESSURE IN HPA 1024.6 1021.5 1024.5 1023.0 1021.6 1018.8 1018.0 1020.3 1023.3 1027.5 1026.1 1028.6 1028.6 DAY 23 22 27 5 19 2 15 24 7 14 15 6 MIN. QNH PRESSURE IN HPA 1003.1 1009.8 1011.1 1011.7 1009.4 1006.8 1008.8 1011.2 1015.9 1013.8 1011.0 1005.6 1003.1 DAY 19 15 9 10 3 17 24 6 5 1 8 27 MEAN QFF PRESSURE IN HPA 1021.4 1017.4 1018.4 1012.5 1009.3 1002.0 1002.0 1005.6 1011.7 1016.5 1020.0 1024.6 1013.5 MAX. QFF PRESSURE IN HPA 1032.6 1023.7 1028.3 1022.0 1016.2 1010.5 1006.9 1011.8 1015.7 1022.7 1028.4 1037.8 1037.8 DAY 23 19 16 4 17 3 21 24 29 14 16 6 MIN. QFF PRESSURE IN HPA 1004.5 1010.0 1009.2 1007.6 1003.4 993.9 996.6 1000.1 1007.0 1005.7 1008.3 1004.1 993.9 DAY 19 6 6 17 31 29 19 15 25 1 7 27 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 842.4 840.2 841.3 841.6 841.2 837.7 839.9 840.9 ****** ****** ****** 843.5 ****** MAX. QFE PRESSURE IN HPA 848.8 845.4 848.5 847.4 848.3 844.3 843.0 843.1 ****** ****** ****** 853.3 ****** DAY 23 22 27 4 20 2 31 17 ** ** ** 6 MIN. QFE PRESSURE IN HPA 828.1 835.2 836.4 837.8 834.1 833.9 835.6 837.9 ****** ****** ****** 832.8 ****** DAY 19 15 9 10 3 17 19 6 ** ** ** 27 MEAN QNH PRESSURE IN HPA 1018.3 1015.8 1017.0 1017.4 1017.0 1012.9 1015.4 1016.6 ****** ****** ****** 1019.6 ****** MAX. QNH PRESSURE IN HPA 1025.8 1021.8 1025.4 1024.2 1025.2 1020.5 1019.0 1019.2 ****** ****** ****** 1031.0 ****** DAY 23 22 27 4 20 2 31 17 ** ** ** 6 MIN. QNH PRESSURE IN HPA 1001.7 1009.9 1011.3 1013.0 1008.7 1008.4 1010.4 1013.1 ****** ****** ****** 1007.1 ****** DAY 19 15 9 10 3 17 19 6 ** ** ** 27 MEAN QFF PRESSURE IN HPA 1021.7 1017.6 1019.0 1013.1 1010.2 1002.7 1002.3 1004.7 ****** ****** ****** 1025.0 ****** MAX. QFF PRESSURE IN HPA 1034.7 1022.8 1029.7 1021.8 1017.5 1010.6 1009.3 1009.4 ****** ****** ****** 1040.5 ****** DAY 23 19 16 4 17 2 21 3 ** ** ** 6 MIN. QFF PRESSURE IN HPA 1002.0 1012.0 1012.4 1008.0 1003.9 994.6 996.5 1000.0 ****** ****** ****** 1006.9 ****** DAY 19 6 9 30 3 28 19 15 ** ** ** 27 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 842.4 840.2 841.2 841.6 841.1 838.1 840.1 841.0 ****** ****** ****** 843.3 ****** MAX. QFE PRESSURE IN HPA 848.4 845.8 848.5 847.7 847.0 844.6 843.5 843.2 ****** ****** ****** 853.6 ****** DAY 23 21 27 4 20 2 31 17 ** ** ** 6 MIN. QFE PRESSURE IN HPA 830.0 835.4 836.5 837.5 834.0 834.8 835.6 838.1 ****** ****** ****** 834.8 ****** DAY 19 15 24 10 2 17 19 14 ** ** ** 27 MEAN QNH PRESSURE IN HPA 1018.3 1015.8 1017.0 1017.4 1016.8 1013.3 1015.7 1016.7 ****** ****** ****** 1019.4 ****** MAX. QNH PRESSURE IN HPA 1025.3 1022.3 1025.4 1024.5 1023.7 1020.9 1019.6 1019.3 ****** ****** ****** 1031.4 ****** DAY 23 21 27 4 20 2 31 17 ** ** ** 6 MIN. QNH PRESSURE IN HPA 1003.9 1010.2 1011.4 1012.6 1008.5 1009.5 1010.4 1013.3 ****** ****** ****** 1009.5 ****** DAY 19 15 24 10 2 17 19 14 ** ** ** 27 MEAN QFF PRESSURE IN HPA 1020.6 1017.2 1018.3 1012.5 1009.7 1002.8 1002.2 1004.5 ****** ****** ****** 1023.9 ****** MAX. QFF PRESSURE IN HPA 1033.2 1023.0 1029.7 1020.8 1016.7 1010.7 1009.3 1008.5 ****** ****** ****** 1039.8 ****** DAY 23 21 16 4 17 2 21 3 ** ** ** 6 MIN. QFF PRESSURE IN HPA 1004.8 1010.5 1011.1 1007.0 1003.4 995.7 996.3 1000.3 ****** ****** ****** 1008.8 ****** DAY 19 24 1 30 30 29 19 15 ** ** ** 27 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.2 3.3 4.3 10.6 17.8 22.3 22.5 22.1 18.0 9.1 8.2 2.5 11.9 MINIMUN AIR TEMPERATURE (C) -2.4 -1.8 0.3 3.7 10.4 13.5 14.6 14.8 10.1 4.1 1.4 -1.9 5.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 8 9 5 1 0 0 0 0 0 0 3 10 36 DAYS WITH FREEZING MIN.<= 0 28 22 12 7 0 0 0 0 0 5 10 19 103 TEMPERATURE RECORDS LOWEST(C) -6.6 -6.8 -6.0 -4.2 5.6 10.2 8.5 9.0 5.0 -1.4 -7.4 -11.4 -11.4 DAY 13 12 22 6 1 4 11 29 21 11 30 31 MAXIMUM AIR TEMPERATURE (C) 7.9 9.7 9.0 18.0 25.2 30.0 30.3 30.3 26.5 13.5 13.2 5.9 18.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 17 16 23 3 0 0 0 59 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 1 1 TEMPERATURE RECORDS HIGHEST(C) 15.2 17.2 15.2 25.4 28.8 34.6 37.2 35.5 32.2 28.6 18.2 11.4 37.2 DAY 31 25 8 17 9 29 19 14 6 2 5 12 DIF. BETWEEN (MAX.-MIN.) (C) 10.3 11.5 8.7 14.3 14.8 16.5 15.7 15.5 16.4 9.4 11.8 7.8 12.7 MEAN DAILY TEMP. (MDT) (C) 2.7 4.0 4.7 10.8 17.8 21.8 22.4 22.5 18.3 8.8 7.3 2.0 11.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 35.2 59.4 72.9 3.2 0.0 0.0 0.0 170.7 HEATING DEG. DAYS(BASE 18 0C) 472.8 392.5 413.3 214.6 25.4 0.0 1.0 8.6 25.1 286.2 320.4 496.5 2656.4 DEWPOINT (MEAN C) -5.5 -3.7 -2.4 -1.2 7.8 6.4 7.7 8.9 5.7 2.2 -2.0 -2.9 1.7 MIXING RATIO (G/KG) 3.07 3.55 4.02 4.41 8.03 7.42 8.04 8.78 7.00 5.49 4.11 3.83 5.65 VAPOUR PRESSURE (HPA) 4.14 4.77 5.38 5.92 10.74 9.90 10.71 11.68 9.37 7.39 5.55 5.16 7.56 SATURATION DEF. (HPA) 3.29 3.38 3.25 7.87 10.67 18.44 18.10 16.44 12.54 5.02 6.06 2.42 8.96 RELATIVE HUMIDITY (MEAN %) 59 64 66 49 55 39 43 48 49 67 53 70 55 RELATIVE HUMIDITY (MAX. %) 77 86 87 73 78 61 65 70 72 84 74 86 76 RELATIVE HUMIDITY (MIN. %) 39 39 46 26 37 23 25 28 27 53 36 55 36 RELATIVE HUMIDITY (MEAN% 03UTC) 70 80 80 65 69 55 58 62 67 81 73 82 70 RELATIVE HUMIDITY (MEAN% 09UTC) 44 47 53 33 41 25 29 31 31 56 39 61 41 RELATIVE HUMIDITY (MEAN% 15UTC) 55 55 58 38 47 31 33 45 39 68 55 75 50 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 13.5 16.7 71.4 32.7 23.7 0.1 0.3 19.2 0.3 118.6 8.8 32.7 338.0 DAYS WITH PRECIPITATION >=10 0 0 2 1 0 0 0 1 0 6 0 1 11 DAYS WITH PRECIPITATION >= 5 1 1 7 2 1 0 0 2 0 6 1 2 23 DAYS WITH PRECIPITATION >= 1 4 3 10 5 6 0 0 3 0 9 2 10 52 DAYS WITH PRECIPITATION 8 15 19 10 12 4 3 4 4 14 8 16 117 GREATEST DAILY PRECIPITATION 5.2 5.6 17.0 16.0 8.0 0.0 0.2 12.2 0.1 26.0 5.0 10.3 26.0 DAY 26 26 4 18 5 ** 2 6 20 26 7 24 DAY WITH THUNDER STORM 0 1 5 7 9 4 4 4 3 5 0 0 42 DAYS WITH SNOW OR SLEET 6 9 9 2 0 0 0 0 0 0 2 6 34 DAYS WITH DUST 2 0 0 9 5 9 2 1 6 0 0 1 35 WIND DIRECTION (PREVAILING) 270 315 270 315 315 45 360 360 315 360 315 135 315 PREVAILING WIND SPEED(KNOTS) 8.1 5.3 7.4 5.8 5.8 11.8 11.4 12.2 4.6 11.3 4.8 6.8 5.4 PREVAILING WIND PERCENT 24.6 14.3 15.7 20.8 14.5 16.3 21.0 23.0 15.4 19.8 11.3 18.7 13.4 CALMS PERCENT OF WIND 28.2 42.4 24.2 25.0 32.3 21.8 23.0 23.8 30.8 27.6 34.7 36.8 28.7 NO. OF WIND OBSERVATION 248 224 248 240 248 239 248 248 240 192 150 155 2680 VECTOR WIND DIRECTION (MEAN) 272 254 267 264 274 42 36 23 24 37 302 226 350 VECTOR WIND MAGNITUDE(KNOTS) 3.2 0.7 1.0 3.1 1.0 2.7 3.8 4.0 2.2 3.4 0.8 1.5 1.1 WIND STEADINESES (MEAN %) 64.0 18.4 17.9 47.7 20.8 41.5 52.1 56.3 42.3 56.7 17.0 34.9 19.6 WIND SPEED (MEAN KNOTS) 5.0 3.8 5.6 6.5 4.8 6.5 7.3 7.1 5.2 6.0 4.7 4.3 5.6 FASTEST WIND DIRECTION 250 130 30 240 300 30 20 10 20 30 240 240 240 FASTEST WIND SPEED (KNOTS) 29 19 29 33 23 29 31 31 31 33 27 29 33 DAY 29 8 30 14 2 13 3 26 19 26 4 24 DAYS WITH SKY CLEAR (0-2)/8 14 5 6 11 9 22 27 24 27 12 18 5 180 DAYS WITH P.CLOUDY (3-6)/8 14 19 11 17 15 8 4 7 3 6 4 14 122 DAYS WITH CLOUDY (7-8)/8 3 4 14 2 7 0 0 0 0 13 8 12 63 DAYS WITH VISIBILITY =< 2 KM 3 4 6 1 0 0 0 0 1 4 0 2 21 DURATION OF SUNSHINE HOURS 218.7 163.3 153.7 248.5 239.5 303.3 344.9 318.0 270.7 170.5 194.9 120.8 2746.8 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 843.7 842.0 837.4 841.1 842.2 840.2 839.8 839.7 842.7 846.0 845.9 843.0 842.0 MAX. QFE PRESSURE IN HPA 851.6 850.2 845.7 848.1 847.0 845.7 844.6 847.1 848.0 852.4 855.0 854.3 855.0 DAY-HOUR 12- 6 1- 6 23- 6 22- 6 13- 6 28- 6 11- 3 8- 3 26- 6 16- 6 30- 6 1- 6 MIN. QFE PRESSURE IN HPA 834.1 832.1 826.0 831.3 836.4 834.9 834.1 833.8 838.3 836.6 836.7 834.4 826.0 DAY-HOUR 6-18 10-15 19-12 4-15 22-12 9-15 20-15 25-12 4-15 4-12 7- 9 24- 3 MEAN QNH PRESSURE IN HPA 1019.9 1017.9 1012.5 1016.9 1018.1 1015.7 1015.3 1015.2 1018.7 1022.5 1022.4 1019.1 1017.8 MAX. QNH PRESSURE IN HPA 1029.1 1027.4 1022.2 1025.0 1023.7 1022.2 1020.9 1023.8 1024.9 1030.0 1033.0 1032.2 1033.0 DAY-HOUR 12- 6 1- 6 23- 6 22- 6 13- 6 28- 6 11- 3 8- 3 26- 6 16- 6 30- 6 1- 6 MIN. QNH PRESSURE IN HPA 1008.7 1006.3 999.2 1005.4 1011.3 1009.6 1008.7 1008.3 1013.6 1011.6 1011.7 1009.0 999.2 DAY-HOUR 6-18 10-15 19-12 4-15 22-12 9-15 20-15 25-12 4-15 4-12 7- 9 24- 3 MEAN QFF PRESSURE IN HPA 1021.6 1018.8 1012.4 1012.8 1009.0 1003.9 1003.3 1003.4 1009.6 1018.8 ****** ****** ****** MAX. QFF PRESSURE IN HPA 1034.3 1029.9 1024.9 1023.8 1018.2 1011.0 1013.6 1012.9 1019.7 1028.8 ****** ****** ****** DAY-HOUR 12- 6 7- 3 22- 3 6- 3 13- 3 6- 3 11- 3 8- 3 20- 3 28-15 **-** **-** MIN. QFF PRESSURE IN HPA 1010.4 1008.2 997.2 1000.6 1000.6 997.5 995.0 995.2 1000.6 1003.9 ****** ****** ****** DAY-HOUR 2-12 10-15 19-12 19-12 22-21 17-12 20-15 24-12 6-12 4-12 **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 843.6 842.3 837.1 841.2 842.2 840.2 840.1 839.9 842.9 ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 850.8 848.6 843.8 846.9 845.8 843.6 844.4 846.3 847.2 ****** ****** ****** ****** DAY 12 1 23 22 1 28 11 8 26 ** ** ** MIN. QFE PRESSURE IN HPA 835.0 836.1 826.4 834.2 837.3 836.9 834.9 836.2 839.5 ****** ****** ****** ****** DAY 7 9 14 4 23 10 3 25 6 ** ** ** MEAN QNH PRESSURE IN HPA 1019.7 1018.2 1012.1 1016.9 1018.0 1015.7 1015.6 1015.4 1018.9 ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1028.1 1025.6 1020.0 1023.6 1022.3 1019.7 1020.7 1022.9 1023.9 ****** ****** ****** ****** DAY 12 1 23 22 1 28 11 8 26 ** ** ** MIN. QNH PRESSURE IN HPA 1009.7 1011.0 999.7 1008.8 1012.4 1011.9 1009.6 1011.1 1014.9 ****** ****** ****** ****** DAY 7 9 14 4 23 10 3 25 6 ** ** ** MEAN QFF PRESSURE IN HPA 1020.9 1018.4 1011.7 1012.8 1009.1 1003.8 1003.5 1003.2 1009.5 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1032.1 1028.7 1022.3 1021.1 1016.4 1009.3 1012.9 1011.0 1017.1 ****** ****** ****** ****** DAY 12 7 22 6 13 6 11 8 24 ** ** ** MIN. QFF PRESSURE IN HPA 1010.7 1010.2 1001.8 1004.3 1001.5 999.4 997.6 997.7 1001.9 ****** ****** ****** ****** DAY 3 9 14 4 23 10 3 25 6 ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 843.7 842.5 837.6 841.7 842.8 841.1 840.8 840.6 843.5 846.3 846.0 843.2 842.5 MAX. QFE PRESSURE IN HPA 851.0 849.5 844.9 847.6 846.8 845.2 844.6 847.1 847.7 851.7 854.2 853.8 854.2 DAY 12 1 23 22 1 28 11 8 26 16 30 1 MIN. QFE PRESSURE IN HPA 835.5 835.5 827.3 834.3 838.2 837.9 835.1 836.9 840.3 839.9 837.6 834.4 827.3 DAY 7 9 14 4 23 9 3 25 6 4 7 24 MEAN QNH PRESSURE IN HPA 1019.9 1018.4 1012.7 1017.5 1018.8 1016.8 1016.4 1016.2 1019.6 1022.9 1022.6 1019.3 1018.4 MAX. QNH PRESSURE IN HPA 1028.4 1026.6 1021.2 1024.4 1023.5 1021.6 1020.9 1023.8 1024.5 1029.2 1032.1 1031.6 1032.1 DAY 12 1 23 22 1 28 11 8 26 16 30 1 MIN. QNH PRESSURE IN HPA 1010.3 1010.3 1000.7 1008.9 1013.4 1013.1 1009.8 1011.9 1015.9 1015.4 1012.7 1009.0 1000.7 DAY 7 9 14 4 23 9 3 25 6 4 7 24 MEAN QFF PRESSURE IN HPA 1022.5 1019.9 1013.1 1014.2 1010.5 1006.0 1005.2 1005.5 1011.8 1021.1 1022.2 1022.0 1014.5 MAX. QFF PRESSURE IN HPA 1033.8 1029.9 1024.9 1023.8 1018.2 1011.0 1013.6 1012.9 1019.7 1028.5 1039.2 1038.7 1039.2 DAY 12 7 22 6 13 6 11 8 20 28 30 1 MIN. QFF PRESSURE IN HPA 1013.1 1010.1 1002.9 1004.9 1002.7 1001.4 998.5 999.7 1004.4 1009.9 1006.6 1008.9 998.5 DAY 7 9 14 19 23 10 3 25 6 4 7 24 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 844.7 843.1 838.3 842.0 843.1 841.3 840.9 840.9 844.0 847.1 846.9 844.0 843.0 MAX. QFE PRESSURE IN HPA 851.6 850.2 845.7 848.1 847.0 845.7 844.3 847.1 848.0 852.4 855.0 854.3 855.0 DAY 12 1 23 22 13 28 11 8 26 16 30 1 MIN. QFE PRESSURE IN HPA 838.1 835.5 829.1 834.0 838.8 838.0 835.0 837.1 840.9 840.2 838.1 835.0 829.1 DAY 6 10 14 19 23 9 3 25 6 4 7 24 MEAN QNH PRESSURE IN HPA 1021.0 1019.2 1013.5 1017.9 1019.2 1017.1 1016.6 1016.6 1020.2 1023.8 1023.5 1020.2 1019.1 MAX. QNH PRESSURE IN HPA 1029.1 1027.4 1022.2 1025.0 1023.7 1022.2 1020.5 1023.8 1024.9 1030.0 1033.0 1032.2 1033.0 DAY 12 1 23 22 13 28 11 8 26 16 30 1 MIN. QNH PRESSURE IN HPA 1013.3 1010.3 1002.8 1008.5 1014.1 1013.2 1009.7 1012.2 1016.6 1015.8 1013.3 1009.7 1002.8 DAY 6 10 14 19 23 9 3 25 6 4 7 24 MEAN QFF PRESSURE IN HPA 1023.4 1020.5 1013.6 1013.9 1009.9 1005.0 1004.6 1004.7 1011.0 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1034.3 1029.4 1024.2 1022.7 1016.2 1009.3 1011.8 1011.4 1018.8 ****** ****** ****** ****** DAY 12 7 23 6 13 6 11 8 24 ** ** ** MIN. QFF PRESSURE IN HPA 1015.7 1010.8 1004.1 1002.6 1003.0 1001.5 997.9 999.2 1003.8 ****** ****** ****** ****** DAY 3 9 14 19 23 18 20 25 6 ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 843.8 842.3 837.7 840.9 842.3 840.6 840.1 839.9 842.8 846.3 845.8 843.0 842.1 MAX. QFE PRESSURE IN HPA 850.7 849.1 844.9 847.5 846.1 844.7 843.4 846.3 847.0 851.8 854.3 853.0 854.3 DAY 12 1 23 22 13 28 11 8 25 16 30 1 MIN. QFE PRESSURE IN HPA 836.1 834.3 828.7 832.8 837.3 836.9 835.3 836.1 839.6 838.2 836.7 835.4 828.7 DAY 6 10 14 19 22 9 3 25 6 4 7 30 MEAN QNH PRESSURE IN HPA 1020.0 1018.3 1012.8 1016.6 1018.3 1016.2 1015.7 1015.4 1018.8 1022.9 1022.3 1019.0 1018.0 MAX. QNH PRESSURE IN HPA 1028.0 1026.1 1021.2 1024.3 1022.6 1021.0 1019.5 1022.9 1023.7 1029.3 1032.2 1030.7 1032.2 DAY 12 1 23 22 13 28 11 8 25 16 30 1 MIN. QNH PRESSURE IN HPA 1011.0 1008.9 1002.3 1007.1 1012.4 1011.9 1010.1 1011.0 1015.1 1013.4 1011.7 1010.2 1002.3 DAY 6 10 14 19 22 9 3 25 6 4 7 30 MEAN QFF PRESSURE IN HPA 1021.2 1018.6 1012.4 1012.1 1008.5 1004.1 1003.3 1003.0 1009.0 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1031.7 1027.5 1022.5 1021.6 1014.7 1009.1 1009.4 1010.0 1017.5 ****** ****** ****** ****** DAY 12 12 23 6 13 6 10 8 24 ** ** ** MIN. QFF PRESSURE IN HPA 1012.5 1010.7 1000.9 1000.7 1001.5 1001.3 997.0 998.0 1001.7 ****** ****** ****** ****** DAY 2 10 19 19 23 18 20 18 6 ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 842.9 841.0 836.6 840.1 841.3 839.2 838.7 838.4 841.2 845.5 845.0 842.3 841.0 MAX. QFE PRESSURE IN HPA 849.8 848.0 843.4 846.0 845.6 842.8 842.5 844.8 845.5 850.3 853.4 852.1 853.4 DAY 12 1 23 22 12 28 10 8 25 16 30 1 MIN. QFE PRESSURE IN HPA 834.8 832.8 826.0 831.6 836.4 835.2 834.4 833.8 838.5 836.6 836.9 834.8 826.0 DAY 6 10 19 4 22 9 3 25 6 4 7 23 MEAN QNH PRESSURE IN HPA 1018.9 1016.7 1011.5 1015.7 1017.0 1014.6 1014.0 1013.6 1016.9 1021.9 1021.4 1018.2 1016.7 MAX. QNH PRESSURE IN HPA 1027.0 1024.9 1019.5 1022.5 1022.1 1018.8 1018.5 1021.1 1021.9 1027.5 1031.2 1029.6 1031.2 DAY 12 1 23 22 12 28 10 8 25 16 30 1 MIN. QNH PRESSURE IN HPA 1009.5 1007.1 999.2 1005.7 1011.3 1009.9 1009.0 1008.3 1013.8 1011.6 1011.9 1009.5 999.2 DAY 6 10 19 4 22 9 3 25 6 4 7 23 MEAN QFF PRESSURE IN HPA 1019.9 1017.0 1011.1 1011.4 1007.9 1002.6 1001.9 1001.4 1007.5 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1030.0 1025.9 1020.4 1018.8 1014.2 1007.6 1009.4 1009.3 1014.1 ****** ****** ****** ****** DAY 12 6 23 22 12 6 10 7 24 ** ** ** MIN. QFF PRESSURE IN HPA 1010.4 1009.1 997.2 1000.6 1001.2 997.5 995.5 995.2 1000.6 ****** ****** ****** ****** DAY 2 10 19 19 23 17 20 24 6 ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 843.4 841.2 836.9 840.3 841.4 838.9 838.3 838.5 841.3 845.8 845.6 842.8 841.2 MAX. QFE PRESSURE IN HPA 849.8 848.3 843.5 845.2 846.6 842.2 842.4 844.7 846.0 850.8 853.9 852.8 853.9 DAY 17 1 23 22 12 28 10 7 25 16 30 1 MIN. QFE PRESSURE IN HPA 834.7 832.1 827.8 831.3 836.6 834.9 834.1 834.1 838.3 838.2 837.5 834.5 827.8 DAY 6 10 19 4 22 9 20 25 4 4 7 23 MEAN QNH PRESSURE IN HPA 1019.6 1016.9 1011.9 1015.9 1017.1 1014.2 1013.6 1013.7 1017.1 1022.3 1022.1 1018.8 1016.9 MAX. QNH PRESSURE IN HPA 1027.0 1025.2 1019.6 1021.6 1023.2 1018.1 1018.3 1021.0 1022.5 1028.1 1031.7 1030.5 1031.7 DAY 17 1 23 22 12 28 10 7 25 16 30 1 MIN. QNH PRESSURE IN HPA 1009.4 1006.3 1001.3 1005.4 1011.6 1009.6 1008.7 1008.7 1013.6 1013.4 1012.6 1009.1 1001.3 DAY 6 10 19 4 22 9 20 25 4 4 7 23 MEAN QFF PRESSURE IN HPA 1022.0 1018.4 1012.3 1012.3 1008.7 1003.2 1002.2 1002.9 1009.2 1020.6 1021.8 1021.4 1012.9 MAX. QFF PRESSURE IN HPA 1031.5 1028.0 1022.7 1019.7 1015.5 1008.0 1009.8 1010.7 1016.2 1028.8 1039.2 1037.0 1039.2 DAY 12 6 22 1 12 6 10 6 25 28 30 1 MIN. QFF PRESSURE IN HPA 1013.2 1008.2 1000.3 1002.1 1001.5 998.3 995.0 996.4 1003.0 1006.8 1008.7 1008.4 995.0 DAY 6 10 19 19 23 9 20 18 1 3 7 23 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 843.9 842.0 837.8 841.5 842.5 840.0 839.7 839.8 842.9 ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 850.3 848.7 845.0 846.1 846.5 843.5 844.1 846.4 847.1 ****** ****** ****** ****** DAY 12 1 23 30 12 28 10 7 25 ** ** ** MIN. QFE PRESSURE IN HPA 834.1 834.4 828.0 832.9 837.2 836.2 836.3 835.3 839.5 ****** ****** ****** ****** DAY 6 10 13 4 22 9 2 24 1 ** ** ** MEAN QNH PRESSURE IN HPA 1020.1 1017.8 1012.9 1017.3 1018.5 1015.6 1015.2 1015.3 1018.9 ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1027.5 1025.7 1021.4 1022.6 1023.1 1019.6 1020.3 1023.0 1023.8 ****** ****** ****** ****** DAY 12 1 23 30 12 28 10 7 25 ** ** ** MIN. QNH PRESSURE IN HPA 1008.7 1009.0 1001.5 1007.3 1012.3 1011.1 1011.2 1010.1 1014.9 ****** ****** ****** ****** DAY 6 10 13 4 22 9 2 24 1 ** ** ** MEAN QFF PRESSURE IN HPA 1022.3 1019.2 1013.0 1013.2 1009.2 1003.5 1003.1 1003.5 1009.6 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1032.8 1029.7 1022.6 1020.8 1015.6 1008.4 1012.0 1010.8 1018.0 ****** ****** ****** ****** DAY 12 6 22 6 18 5 10 7 23 ** ** ** MIN. QFF PRESSURE IN HPA 1011.7 1009.4 1002.1 1004.2 1002.0 999.6 997.4 996.5 1003.5 ****** ****** ****** ****** DAY 6 25 13 19 22 9 19 24 5 ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 843.8 842.1 837.7 841.6 842.4 840.3 840.0 840.1 843.1 ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 850.4 848.2 844.6 846.9 846.5 843.6 844.4 846.8 847.2 ****** ****** ****** ****** DAY 11 1 23 21 12 27 10 7 25 ** ** ** MIN. QFE PRESSURE IN HPA 834.1 836.5 827.5 833.9 837.1 836.5 835.2 835.8 839.7 ****** ****** ****** ****** DAY 6 10 13 4 22 9 2 24 1 ** ** ** MEAN QNH PRESSURE IN HPA 1020.0 1018.0 1012.8 1017.4 1018.3 1015.9 1015.5 1015.6 1019.1 ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1027.7 1025.1 1020.9 1023.6 1023.1 1019.7 1020.7 1023.5 1023.9 ****** ****** ****** ****** DAY 11 1 23 21 12 27 10 7 25 ** ** ** MIN. QNH PRESSURE IN HPA 1008.7 1011.4 1000.9 1008.4 1012.2 1011.4 1009.9 1010.6 1015.2 ****** ****** ****** ****** DAY 6 10 13 4 22 9 2 24 1 ** ** ** MEAN QFF PRESSURE IN HPA 1021.1 1018.3 1012.5 1012.7 1008.6 1003.6 1003.0 1003.1 1009.4 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1031.5 1029.5 1022.0 1021.2 1015.4 1008.6 1011.5 1010.4 1018.4 ****** ****** ****** ****** DAY 11 6 22 21 12 5 10 7 23 ** ** ** MIN. QFF PRESSURE IN HPA 1010.5 1010.7 1002.4 1003.5 1000.6 999.7 997.7 997.0 1002.1 ****** ****** ****** ****** DAY 6 4 13 25 22 9 19 24 5 ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -1.0 -0.6 5.5 10.1 16.8 21.2 21.7 21.3 18.4 13.1 7.0 1.9 11.3 MINIMUN AIR TEMPERATURE (C) -5.2 -5.3 0.1 4.4 8.6 13.2 15.4 14.8 10.6 6.3 1.3 -3.1 5.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 1 0 0 0 0 0 1 DAYS WITH MINIMUM TEMP. <=-4 19 16 4 2 0 0 0 0 0 0 3 9 53 DAYS WITH FREEZING MIN.<= 0 30 25 15 8 0 0 0 0 0 0 14 24 116 TEMPERATURE RECORDS LOWEST(C) -12.0 -16.2 -5.0 -5.0 3.0 10.6 8.4 8.8 6.6 2.0 -5.8 -14.6 -16.2 DAY 3 7 6 6 7 16 28 26 29 23 15 29 MAXIMUM AIR TEMPERATURE (C) 2.1 2.7 11.8 16.8 23.9 28.9 29.2 29.0 26.9 20.8 14.0 7.4 17.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 9 14 11 8 0 0 0 42 DAYS WITH MAXIMUM TEMP. <= 0 5 11 0 0 0 0 0 0 0 0 0 3 19 TEMPERATURE RECORDS HIGHEST(C) 5.2 11.8 18.7 23.8 29.4 34.8 36.6 35.8 32.6 25.4 21.0 15.6 36.6 DAY 6 1 20 18 27 13 31 1 10 6 8 5 DIF. BETWEEN (MAX.-MIN.) (C) 7.3 8.0 11.7 12.4 15.3 15.7 13.8 14.2 16.3 14.5 12.7 10.5 12.7 MEAN DAILY TEMP. (MDT) (C) -1.6 -1.3 5.9 10.6 16.2 21.0 22.3 21.9 18.8 13.5 7.7 2.2 11.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 25.5 55.2 48.8 5.6 0.0 0.0 0.0 135.2 HEATING DEG. DAYS(BASE 18 0C) 606.3 559.8 375.0 221.8 65.8 0.0 3.4 1.7 22.9 134.0 310.1 491.2 2792.1 DEWPOINT (MEAN C) -5.5 -5.2 -3.6 2.0 2.7 4.0 10.7 9.3 4.7 1.7 -3.1 -5.3 1.0 MIXING RATIO (G/KG) 3.10 3.21 3.63 5.67 5.70 6.26 9.84 9.03 6.57 5.36 4.02 3.20 5.47 VAPOUR PRESSURE (HPA) 4.17 4.30 4.85 7.59 7.63 8.34 13.04 11.99 8.80 7.21 5.41 4.31 7.30 SATURATION DEF. (HPA) 1.65 1.87 4.59 5.55 12.60 18.14 14.21 14.53 13.76 8.67 5.39 3.26 8.69 RELATIVE HUMIDITY (MEAN %) 73 74 57 61 44 36 53 51 45 52 53 63 55 RELATIVE HUMIDITY (MAX. %) 86 89 82 84 69 57 73 72 65 74 72 80 75 RELATIVE HUMIDITY (MIN. %) 60 62 34 39 24 19 34 31 25 32 31 42 36 RELATIVE HUMIDITY (MEAN% 03UTC) 82 84 77 78 62 52 68 68 61 69 65 72 70 RELATIVE HUMIDITY (MEAN% 09UTC) 65 65 42 45 29 23 36 34 27 34 36 47 40 RELATIVE HUMIDITY (MEAN% 15UTC) 79 77 47 52 34 28 47 46 40 44 46 62 50 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 23.8 35.9 36.5 68.8 10.4 4.5 7.7 3.7 0.0 16.2 21.6 53.9 283.0 DAYS WITH PRECIPITATION >=10 0 1 1 2 0 0 0 0 0 0 0 2 6 DAYS WITH PRECIPITATION >= 5 3 3 2 7 1 0 1 0 0 1 2 3 23 DAYS WITH PRECIPITATION >= 1 5 9 8 11 2 2 2 1 0 5 5 7 57 DAYS WITH PRECIPITATION 15 13 14 14 6 7 4 4 2 10 12 10 111 GREATEST DAILY PRECIPITATION 9.0 10.0 15.1 14.1 9.1 3.0 5.0 3.0 0.0 7.0 9.2 26.4 26.4 DAY 7 9 8 12 19 30 9 24 ** 16 20 17 DAY WITH THUNDER STORM 0 0 0 10 1 6 4 3 0 4 0 0 28 DAYS WITH SNOW OR SLEET 13 10 7 0 0 0 0 0 0 0 0 8 38 DAYS WITH DUST 0 0 3 1 3 2 1 1 1 0 3 0 15 WIND DIRECTION (PREVAILING) 315 315 270 315 270 315 45 360 360 135 315 315 315 PREVAILING WIND SPEED(KNOTS) 8.5 8.3 7.2 5.2 7.0 4.6 11.3 12.6 11.6 7.3 5.2 5.8 5.8 PREVAILING WIND PERCENT 21.3 32.6 22.2 16.0 18.1 20.8 27.0 30.6 15.8 13.7 16.3 19.4 15.2 CALMS PERCENT OF WIND 29.7 25.7 28.2 29.5 28.2 20.8 25.0 24.2 35.4 44.0 38.8 46.4 31.5 NO. OF WIND OBSERVATION 155 175 248 237 248 240 248 248 240 248 240 248 2775 VECTOR WIND DIRECTION (MEAN) 297 295 263 355 270 319 24 27 21 42 241 268 337 VECTOR WIND MAGNITUDE(KNOTS) 2.8 2.8 2.3 1.5 1.8 1.8 6.5 5.9 2.2 0.7 2.1 1.9 1.6 WIND STEADINESES (MEAN %) 50.0 49.1 44.2 28.3 35.3 33.3 81.3 72.0 38.6 17.5 46.7 51.4 29.1 WIND SPEED (MEAN KNOTS) 5.6 5.7 5.2 5.3 5.1 5.4 8.0 8.2 5.7 4.0 4.5 3.7 5.5 FASTEST WIND DIRECTION 30 310 190 150 280 10 10 20 360 10 280 220 10 FASTEST WIND SPEED (KNOTS) 27 17 19 23 23 25 31 31 21 19 21 19 31 DAY 18 26 4 17 25 28 25 5 20 1 28 12 DAYS WITH SKY CLEAR (0-2)/8 7 11 8 6 22 22 24 22 27 18 11 12 190 DAYS WITH P.CLOUDY (3-6)/8 12 10 15 11 8 8 7 9 3 8 11 12 114 DAYS WITH CLOUDY (7-8)/8 12 8 8 13 1 0 0 0 0 5 8 7 62 DAYS WITH VISIBILITY =< 2 KM 5 4 2 0 0 0 0 0 0 0 1 4 16 DURATION OF SUNSHINE HOURS 111.0 162.1 223.7 178.4 333.3 328.1 350.4 329.6 300.4 233.7 186.8 155.4 2892.9 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 841.8 840.9 837.9 841.3 840.7 838.4 837.3 838.5 842.1 845.0 843.9 841.6 840.8 MAX. QFE PRESSURE IN HPA 850.5 850.0 847.0 849.9 846.4 843.9 843.4 845.1 847.4 851.1 851.8 848.4 851.8 DAY-HOUR 10- 6 6- 6 17- 6 9- 6 17- 6 8- 6 31- 6 21- 6 21- 6 16-21 5-18 21-18 MIN. QFE PRESSURE IN HPA 833.7 830.9 826.7 834.5 834.2 832.4 832.2 832.7 837.6 837.3 835.2 825.2 825.2 DAY-HOUR 29- 3 2- 3 4-15 30-15 1-12 23-15 15-12 29-15 4-15 30-15 28- 9 27- 3 MEAN QNH PRESSURE IN HPA 1017.6 1016.6 1013.0 1017.1 1016.3 1013.6 1012.4 1013.8 1018.0 1021.4 1020.1 1017.4 1016.4 MAX. QNH PRESSURE IN HPA 1027.8 1027.2 1023.7 1027.1 1023.0 1020.1 1019.5 1021.5 1024.2 1028.5 1029.3 1025.3 1029.3 DAY-HOUR 10- 6 6- 6 17- 6 9- 6 17- 6 8- 6 31- 6 21- 6 21- 6 16-21 5-18 21-18 MIN. QNH PRESSURE IN HPA 1008.2 1004.9 1000.0 1009.1 1008.8 1006.7 1006.4 1007.0 1012.7 1012.4 1009.9 998.3 998.3 DAY-HOUR 29- 3 2- 3 4-15 30-15 1-12 23-15 15-12 29-15 4-15 30-15 28- 9 27- 3 MEAN QFF PRESSURE IN HPA ****** ****** 1012.2 1013.3 1008.1 1002.5 1000.7 1002.3 1008.7 1015.7 1018.4 1019.3 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1024.6 1027.2 1020.4 1009.2 1009.9 1011.8 1019.2 1026.0 1029.4 1035.9 ****** DAY-HOUR **-** **-** 17- 3 3- 3 5- 6 8- 3 27- 6 21- 3 30- 3 16- 9 15-18 30- 6 MIN. QFF PRESSURE IN HPA ****** ****** 998.3 1001.6 999.2 995.6 991.7 994.7 1001.6 1006.1 1006.9 1001.8 ****** DAY-HOUR **-** **-** 4-18 30-21 27-21 15-15 15-12 29-12 17-12 20-12 28- 9 27- 3 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 837.6 841.0 840.7 838.8 837.4 838.7 842.1 845.0 844.0 841.6 ****** MAX. QFE PRESSURE IN HPA ****** ****** 846.0 848.4 846.0 842.9 841.9 844.0 846.1 850.0 850.8 846.8 ****** DAY ** ** 17 9 17 8 31 21 15 17 6 22 MIN. QFE PRESSURE IN HPA ****** ****** 828.9 835.3 834.5 834.2 834.9 834.8 838.2 839.6 836.7 826.5 ****** DAY ** ** 5 30 1 24 1 30 4 31 20 27 MEAN QNH PRESSURE IN HPA ****** ****** 1012.8 1016.7 1016.3 1014.1 1012.5 1014.0 1018.0 1021.4 1020.2 1017.3 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1022.5 1025.3 1022.5 1018.9 1017.7 1020.2 1022.6 1027.2 1028.1 1023.5 ****** DAY ** ** 17 9 17 8 31 21 15 17 6 22 MIN. QNH PRESSURE IN HPA ****** ****** 1002.6 1010.1 1009.1 1008.8 1009.6 1009.5 1013.4 1015.1 1011.7 999.8 ****** DAY ** ** 5 30 1 24 1 30 4 31 20 27 MEAN QFF PRESSURE IN HPA ****** ****** 1011.6 1012.5 1007.9 1002.9 1000.6 1001.9 1008.3 1015.2 1018.0 1018.7 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1022.1 1025.6 1018.1 1007.2 1008.6 1008.8 1017.2 1024.1 1026.8 1033.1 ****** DAY ** ** 17 9 6 1 27 21 30 16 15 30 MIN. QFF PRESSURE IN HPA ****** ****** 1000.1 1003.7 999.3 997.5 996.6 995.9 1002.4 1008.4 1008.0 1003.4 ****** DAY ** ** 21 23 28 24 15 30 9 31 20 27 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 841.6 840.9 838.1 841.6 841.3 839.4 838.2 839.5 842.9 845.4 844.0 841.6 841.2 MAX. QFE PRESSURE IN HPA 849.9 848.8 846.2 848.4 846.2 843.5 843.2 844.7 846.7 849.9 851.2 847.2 851.2 DAY 3 7 17 9 17 8 31 21 14 28 6 3 MIN. QFE PRESSURE IN HPA 833.7 830.9 831.4 835.3 834.7 834.9 835.1 835.7 838.8 840.6 835.9 825.2 825.2 DAY 29 2 9 30 1 24 8 30 4 30 20 27 MEAN QNH PRESSURE IN HPA 1017.4 1016.5 1013.3 1017.5 1017.0 1014.8 1013.4 1014.9 1018.9 1021.8 1020.2 1017.4 1016.9 MAX. QNH PRESSURE IN HPA 1027.1 1025.8 1022.8 1025.3 1022.8 1019.6 1019.3 1021.0 1023.3 1027.1 1028.6 1023.9 1028.6 DAY 3 7 17 9 17 8 31 21 14 28 6 3 MIN. QNH PRESSURE IN HPA 1008.2 1004.9 1005.5 1010.1 1009.4 1009.6 1009.8 1010.5 1014.1 1016.2 1010.8 998.3 998.3 DAY 29 2 9 30 1 24 8 30 4 30 20 27 MEAN QFF PRESSURE IN HPA 1022.5 1021.6 1013.1 1014.3 1009.6 1004.4 1002.7 1004.5 1010.9 1017.5 1019.3 1020.0 1013.3 MAX. QFF PRESSURE IN HPA 1037.2 1038.7 1024.6 1027.2 1020.2 1009.2 1009.7 1011.8 1019.2 1025.2 1028.7 1035.3 1038.7 DAY 10 7 17 3 5 8 27 21 30 16 15 30 MIN. QFF PRESSURE IN HPA 1010.0 1003.6 1001.7 1004.5 1000.9 998.6 997.7 999.3 1005.3 1010.4 1007.4 1001.8 997.7 DAY 29 2 21 30 28 24 15 30 9 20 20 27 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 842.4 841.7 838.8 842.5 841.7 839.4 838.4 839.7 843.4 846.1 844.9 842.5 841.8 MAX. QFE PRESSURE IN HPA 850.5 850.0 847.0 849.9 846.4 843.9 843.4 845.1 847.4 851.0 851.8 848.3 851.8 DAY 10 6 17 9 17 8 31 21 21 28 6 3 MIN. QFE PRESSURE IN HPA 835.7 831.3 832.4 836.4 836.1 834.6 835.1 836.0 839.6 840.6 837.8 826.8 826.8 DAY 29 2 3 30 1 24 8 30 4 30 28 27 MEAN QNH PRESSURE IN HPA 1018.4 1017.5 1014.1 1018.4 1017.5 1014.9 1013.6 1015.2 1019.5 1022.7 1021.2 1018.5 1017.6 MAX. QNH PRESSURE IN HPA 1027.8 1027.2 1023.7 1027.1 1023.0 1020.1 1019.5 1021.5 1024.2 1028.4 1029.3 1025.2 1029.3 DAY 10 6 17 9 17 8 31 21 21 28 6 3 MIN. QNH PRESSURE IN HPA 1010.5 1005.4 1006.7 1011.3 1011.0 1009.2 1009.8 1010.9 1015.1 1016.2 1013.0 1000.1 1000.1 DAY 29 2 3 30 1 24 8 30 4 30 28 27 MEAN QFF PRESSURE IN HPA ****** ****** 1013.4 1014.8 1009.2 1003.6 1002.0 1003.9 1010.1 1016.9 1020.0 1020.8 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1023.4 1027.2 1020.4 1008.2 1009.9 1011.2 1017.5 1025.9 1028.9 1035.9 ****** DAY ** ** 17 9 5 8 27 21 30 16 15 30 MIN. QFF PRESSURE IN HPA ****** ****** 1003.4 1006.3 1002.1 998.1 996.1 998.4 1005.4 1009.6 1010.9 1004.9 ****** DAY ** ** 27 25 28 17 15 30 3 20 11 27 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 841.9 841.2 838.1 841.6 840.8 838.4 837.5 838.7 842.2 845.1 843.8 841.4 840.9 MAX. QFE PRESSURE IN HPA 849.9 849.4 845.6 849.6 845.7 843.3 842.0 843.4 846.2 851.0 850.3 847.4 851.0 DAY 3 6 17 8 17 12 31 21 14 16 6 21 MIN. QFE PRESSURE IN HPA 835.8 831.0 830.0 835.8 835.5 833.3 834.1 834.9 838.5 839.1 835.2 826.2 826.2 DAY 28 2 4 30 1 24 8 29 3 30 28 27 MEAN QNH PRESSURE IN HPA 1017.8 1016.9 1013.3 1017.4 1016.5 1013.7 1012.6 1014.0 1018.1 1021.4 1019.9 1017.2 1016.6 MAX. QNH PRESSURE IN HPA 1027.1 1026.5 1022.1 1026.7 1022.2 1019.4 1017.9 1019.5 1022.8 1028.4 1027.5 1024.2 1028.4 DAY 3 6 17 8 17 12 31 21 14 16 6 21 MIN. QNH PRESSURE IN HPA 1010.6 1005.0 1003.9 1010.6 1010.3 1007.7 1008.7 1009.6 1013.8 1014.5 1009.9 999.4 999.4 DAY 28 2 4 30 1 24 8 29 3 30 28 27 MEAN QFF PRESSURE IN HPA ****** ****** 1012.2 1013.1 1007.8 1002.1 1000.4 1001.9 1008.0 1014.9 1017.5 1018.3 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1021.7 1025.8 1019.4 1007.4 1008.2 1007.8 1015.7 1026.0 1026.9 1032.0 ****** DAY ** ** 17 8 5 27 27 21 30 16 15 29 MIN. QFF PRESSURE IN HPA ****** ****** 1001.1 1004.5 1000.9 996.3 994.0 996.8 1002.6 1006.6 1006.9 1003.8 ****** DAY ** ** 4 30 28 24 15 29 12 20 28 27 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 841.2 840.4 837.0 840.5 839.7 837.3 836.2 837.3 840.9 844.0 842.9 840.9 839.8 MAX. QFE PRESSURE IN HPA 849.1 848.7 843.7 848.6 844.1 842.2 840.4 841.9 845.2 850.1 849.0 847.8 850.1 DAY 3 6 17 8 5 12 30 21 30 16 6 21 MIN. QFE PRESSURE IN HPA 835.6 831.6 827.3 834.9 834.2 832.8 832.2 833.3 837.6 837.7 835.9 827.2 827.2 DAY 28 1 4 30 1 24 15 29 11 30 28 27 MEAN QNH PRESSURE IN HPA 1017.0 1015.9 1012.0 1016.1 1015.2 1012.3 1011.2 1012.3 1016.6 1020.2 1018.9 1016.6 1015.4 MAX. QNH PRESSURE IN HPA 1026.1 1025.7 1019.8 1025.6 1020.3 1018.1 1016.0 1017.7 1021.6 1027.3 1026.0 1024.6 1027.3 DAY 3 6 17 8 5 12 30 21 30 16 6 21 MIN. QNH PRESSURE IN HPA 1010.4 1005.7 1000.7 1009.6 1008.8 1007.1 1006.4 1007.7 1012.7 1012.9 1010.8 1000.6 1000.6 DAY 28 1 4 30 1 24 15 29 11 30 28 27 MEAN QFF PRESSURE IN HPA ****** ****** 1010.8 1012.1 1006.8 1001.3 999.0 1000.4 1006.8 1014.0 1016.7 1017.9 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1018.9 1025.0 1018.5 1005.9 1007.2 1007.1 1016.4 1024.7 1024.2 1030.9 ****** DAY ** ** 16 8 5 27 27 5 30 16 15 29 MIN. QFF PRESSURE IN HPA ****** ****** 999.2 1002.6 1000.1 995.9 991.7 994.7 1001.6 1006.1 1007.9 1004.9 ****** DAY ** ** 4 30 28 24 15 29 17 20 8 26 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 841.7 840.7 837.2 840.6 839.7 837.1 836.1 837.1 840.9 844.3 843.6 841.4 840.0 MAX. QFE PRESSURE IN HPA 849.5 849.6 844.4 848.8 844.1 842.2 840.2 841.5 846.0 850.8 851.1 848.3 851.1 DAY 3 6 16 8 5 7 30 21 30 16 5 21 MIN. QFE PRESSURE IN HPA 834.8 831.6 826.7 834.5 834.7 832.4 832.4 832.7 837.6 837.3 837.3 828.6 826.7 DAY 28 1 4 30 1 23 15 29 4 30 19 26 MEAN QNH PRESSURE IN HPA 1017.6 1016.3 1012.3 1016.2 1015.1 1012.1 1010.9 1012.1 1016.6 1020.6 1019.7 1017.2 1015.6 MAX. QNH PRESSURE IN HPA 1026.6 1026.7 1020.7 1025.8 1020.3 1018.1 1015.8 1017.3 1022.5 1028.1 1028.5 1025.2 1028.5 DAY 3 6 16 8 5 7 30 21 30 16 5 21 MIN. QNH PRESSURE IN HPA 1009.5 1005.7 1000.0 1009.1 1009.4 1006.7 1006.7 1007.0 1012.7 1012.4 1012.4 1002.2 1000.0 DAY 28 1 4 30 1 23 15 29 4 30 19 26 MEAN QFF PRESSURE IN HPA 1022.5 1021.2 1012.1 1013.1 1007.6 1001.7 999.9 1001.7 1008.5 1016.2 1018.9 1019.8 1011.9 MAX. QFF PRESSURE IN HPA 1036.1 1037.6 1021.7 1027.0 1019.2 1008.1 1007.4 1008.5 1018.9 1025.8 1028.0 1034.9 1037.6 DAY 9 6 16 8 5 7 27 5 30 16 15 29 MIN. QFF PRESSURE IN HPA 1010.6 1004.1 998.6 1002.6 1000.9 995.6 995.5 995.7 1002.6 1008.0 1009.7 1005.9 995.5 DAY 28 1 4 30 24 15 15 29 8 30 8 26 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 838.1 841.5 840.8 838.2 837.5 838.5 842.2 845.2 844.2 841.9 ****** MAX. QFE PRESSURE IN HPA ****** ****** 845.3 849.0 845.3 842.7 841.5 843.0 847.0 851.0 851.8 848.4 ****** DAY ** ** 16 8 16 12 30 20 30 16 5 21 MIN. QFE PRESSURE IN HPA ****** ****** 827.4 834.5 837.0 833.3 834.8 833.9 838.3 838.5 837.2 828.9 ****** DAY ** ** 4 30 1 23 16 29 1 30 19 26 MEAN QNH PRESSURE IN HPA ****** ****** 1013.3 1017.3 1016.5 1013.5 1012.6 1013.8 1018.1 1021.6 1020.5 1017.8 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1021.7 1026.0 1021.7 1018.7 1017.3 1019.0 1023.7 1028.4 1029.3 1025.3 ****** DAY ** ** 16 8 16 12 30 20 30 16 5 21 MIN. QNH PRESSURE IN HPA ****** ****** 1000.8 1009.1 1012.0 1007.7 1009.5 1008.4 1013.6 1013.8 1012.3 1002.6 ****** DAY ** ** 4 30 1 23 16 29 1 30 19 26 MEAN QFF PRESSURE IN HPA ****** ****** 1012.6 1013.6 1008.2 1002.2 1000.9 1002.5 1008.7 1015.9 1019.2 1020.1 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1021.8 1027.1 1019.4 1007.0 1008.7 1009.4 1017.8 1025.2 1029.4 1035.6 ****** DAY ** ** 16 8 5 27 26 5 30 16 15 29 MIN. QFF PRESSURE IN HPA ****** ****** 998.3 1002.9 999.6 995.9 996.4 995.0 1002.6 1007.0 1010.0 1007.4 ****** DAY ** ** 4 30 27 22 14 29 8 30 19 26 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 838.2 841.3 841.1 838.6 837.6 838.8 842.4 845.2 844.1 841.8 ****** MAX. QFE PRESSURE IN HPA ****** ****** 846.2 848.9 846.1 842.9 841.9 844.2 847.0 851.1 851.3 847.8 ****** DAY ** ** 16 8 16 7 30 20 30 16 5 21 MIN. QFE PRESSURE IN HPA ****** ****** 827.5 834.8 837.2 833.8 835.1 834.6 838.1 839.1 836.3 828.4 ****** DAY ** ** 4 30 27 23 8 29 1 30 19 26 MEAN QNH PRESSURE IN HPA ****** ****** 1013.4 1017.1 1016.8 1013.9 1012.7 1014.1 1018.3 1021.6 1020.3 1017.6 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1022.8 1025.9 1022.6 1018.9 1017.7 1020.4 1023.7 1028.5 1028.7 1024.6 ****** DAY ** ** 16 8 16 7 30 20 30 16 5 21 MIN. QNH PRESSURE IN HPA ****** ****** 1000.9 1009.5 1012.3 1008.3 1009.8 1009.2 1013.3 1014.5 1011.2 1002.0 ****** DAY ** ** 4 30 27 23 8 29 1 30 19 26 MEAN QFF PRESSURE IN HPA ****** ****** 1012.4 1012.6 1008.1 1002.3 1000.4 1002.0 1008.2 1015.0 1018.0 1018.8 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1022.7 1026.4 1017.7 1007.0 1008.9 1009.3 1017.4 1025.0 1028.3 1033.5 ****** DAY ** ** 16 8 5 26 26 20 30 16 14 29 MIN. QFF PRESSURE IN HPA ****** ****** 998.7 1001.6 999.2 996.2 996.6 996.0 1001.7 1007.2 1008.7 1005.2 ****** DAY ** ** 4 30 27 22 14 29 11 30 19 25 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -6.2 -5.7 4.6 12.5 16.4 22.4 24.7 24.0 18.7 14.2 8.1 3.0 11.4 MINIMUN AIR TEMPERATURE (C) -10.5 -10.7 0.2 5.5 8.7 13.4 16.3 16.4 10.4 6.9 3.0 -1.1 4.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 2 0 0 0 0 2 DAYS WITH MINIMUM TEMP. <=-4 30 27 2 0 0 0 0 0 0 0 1 3 63 DAYS WITH FREEZING MIN.<= 0 31 28 14 0 0 0 0 0 0 1 3 23 100 TEMPERATURE RECORDS LOWEST(C) -18.2 -19.1 -6.0 1.4 1.6 9.8 13.4 11.6 3.6 0.0 -4.4 -4.8 -19.1 DAY 30 1 31 2 1 12 31 19 20 23 22 31 MAXIMUM AIR TEMPERATURE (C) -1.4 0.0 10.1 19.8 23.9 30.7 32.8 31.8 27.6 22.2 13.9 8.1 18.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 4 20 29 24 12 0 0 0 89 DAYS WITH MAXIMUM TEMP. <= 0 21 12 0 0 0 0 0 0 0 0 0 0 33 TEMPERATURE RECORDS HIGHEST(C) 4.8 7.8 18.2 24.6 30.8 36.0 37.6 36.2 34.8 29.5 20.0 13.3 37.6 DAY 1 28 25 15 25 30 13 9 2 8 29 25 DIF. BETWEEN (MAX.-MIN.) (C) 9.1 10.7 9.9 14.3 15.2 17.3 16.5 15.4 17.2 15.3 10.9 9.2 13.4 MEAN DAILY TEMP. (MDT) (C) -6.0 -5.3 5.2 12.7 16.3 22.1 24.6 24.1 19.0 14.5 8.5 3.5 11.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 3.0 48.8 110.5 101.1 30.9 0.0 0.0 0.0 294.3 HEATING DEG. DAYS(BASE 18 0C) 743.3 653.2 397.8 160.5 76.2 2.1 0.0 0.0 44.4 117.1 286.0 448.4 2929.0 DEWPOINT (MEAN C) -10.8 -11.4 -0.9 0.7 2.9 3.8 8.2 8.0 2.2 0.8 -0.5 -3.3 -0.0 MIXING RATIO (G/KG) 2.09 2.02 4.36 4.93 5.75 6.18 8.41 8.26 5.52 4.91 4.57 3.68 5.06 VAPOUR PRESSURE (HPA) 2.81 2.73 5.85 6.62 7.70 8.25 11.19 10.99 7.39 6.61 6.16 4.94 6.77 SATURATION DEF. (HPA) 1.19 1.53 2.98 8.64 12.13 20.44 21.33 20.14 16.33 10.95 5.02 2.83 10.29 RELATIVE HUMIDITY (MEAN %) 71 66 71 49 44 33 38 40 39 45 59 66 52 RELATIVE HUMIDITY (MAX. %) 84 82 89 71 64 52 59 61 59 65 78 82 71 RELATIVE HUMIDITY (MIN. %) 59 50 49 29 26 17 22 22 19 27 37 45 34 RELATIVE HUMIDITY (MEAN% 03UTC) 76 70 83 63 58 48 54 58 54 60 74 77 65 RELATIVE HUMIDITY (MEAN% 09UTC) 62 55 56 32 29 20 25 24 23 31 42 54 38 RELATIVE HUMIDITY (MEAN% 15UTC) 72 67 66 43 37 26 31 35 33 40 52 66 47 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 12.0 17.7 62.2 19.2 10.5 2.0 0.0 0.3 0.0 21.0 11.6 35.6 192.1 DAYS WITH PRECIPITATION >=10 0 0 2 0 0 0 0 0 0 1 0 2 5 DAYS WITH PRECIPITATION >= 5 0 1 4 2 1 0 0 0 0 2 1 2 13 DAYS WITH PRECIPITATION >= 1 5 5 13 4 2 1 0 0 0 3 3 5 41 DAYS WITH PRECIPITATION 11 9 14 5 8 1 0 3 0 4 9 9 73 GREATEST DAILY PRECIPITATION 3.0 6.0 16.0 7.1 7.9 2.0 0.0 0.3 0.0 11.0 6.0 13.0 16.0 DAY 17 19 10 12 7 6 ** 18 ** 31 14 1 DAY WITH THUNDER STORM 0 0 2 3 8 1 0 0 0 4 1 0 19 DAYS WITH SNOW OR SLEET 11 10 5 0 0 0 0 0 0 0 0 5 31 DAYS WITH DUST 0 1 0 3 3 3 1 0 0 4 1 0 16 WIND DIRECTION (PREVAILING) 315 315 315 315 315 315 360 135 315 315 225 315 315 PREVAILING WIND SPEED(KNOTS) 7.9 8.4 7.6 6.1 5.9 5.8 11.4 8.9 5.0 5.5 9.3 6.2 6.7 PREVAILING WIND PERCENT 39.5 49.6 25.4 27.9 24.6 16.7 21.4 16.9 17.1 13.7 15.4 28.6 22.1 CALMS PERCENT OF WIND 23.4 21.0 31.0 22.5 20.2 24.6 23.4 29.0 39.6 40.7 37.5 40.7 29.5 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 326 327 309 344 324 12 40 56 7 341 245 293 346 VECTOR WIND MAGNITUDE(KNOTS) 4.8 5.6 2.6 3.2 1.9 2.8 4.4 4.0 2.0 1.0 1.8 2.3 2.3 WIND STEADINESES (MEAN %) 71.6 80.0 45.6 49.2 31.7 43.7 57.9 54.8 40.0 19.2 34.6 59.0 38.3 WIND SPEED (MEAN KNOTS) 6.7 7.0 5.7 6.5 6.0 6.4 7.6 7.3 5.0 5.2 5.2 3.9 6.0 FASTEST WIND DIRECTION 30 360 250 10 10 10 30 30 20 30 30 300 360 FASTEST WIND SPEED (KNOTS) 25 39 23 39 31 29 19 33 31 29 17 19 39 DAY 4 11 31 29 20 17 9 16 22 22 6 5 DAYS WITH SKY CLEAR (0-2)/8 15 15 8 7 14 29 29 16 29 20 8 10 200 DAYS WITH P.CLOUDY (3-6)/8 9 9 12 21 14 1 2 15 1 9 16 10 119 DAYS WITH CLOUDY (7-8)/8 7 4 11 2 3 0 0 0 0 2 6 11 46 DAYS WITH VISIBILITY =< 2 KM 5 4 2 0 1 0 0 0 0 0 0 3 15 DURATION OF SUNSHINE HOURS 186.7 211.6 154.3 248.7 297.1 358.7 357.8 305.0 308.4 253.3 194.3 159.1 3035.0 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 841.6 843.6 839.4 843.1 842.2 838.9 839.4 839.4 841.3 845.0 844.3 841.9 841.7 MAX. QFE PRESSURE IN HPA 849.0 850.5 845.3 847.1 846.2 842.8 844.1 844.8 850.1 851.1 849.1 848.1 851.1 DAY-HOUR 22- 6 25- 6 8- 6 10-18 20- 6 4- 6 20- 6 19- 6 24- 6 27- 6 8- 6 18-18 MIN. QFE PRESSURE IN HPA 833.6 834.4 827.1 838.1 836.0 832.4 831.7 831.8 834.4 838.3 838.7 834.2 827.1 DAY-HOUR 17- 3 23- 3 29- 9 13-12 31-15 9-15 5-15 1-15 13-12 1-15 15-12 4-21 MEAN QNH PRESSURE IN HPA 1017.4 1019.8 1014.8 1019.2 1018.1 1014.2 1014.8 1014.8 1017.0 1021.4 1020.6 1017.8 1017.5 MAX. QNH PRESSURE IN HPA 1026.0 1027.8 1021.7 1023.8 1022.8 1018.8 1020.3 1021.1 1027.3 1028.5 1026.1 1025.0 1028.5 DAY-HOUR 22- 6 25- 6 8- 6 10-18 20- 6 4- 6 20- 6 19- 6 24- 6 27- 6 8- 6 18-18 MIN. QNH PRESSURE IN HPA 1008.1 1009.0 1000.5 1013.3 1010.9 1006.7 1005.9 1006.0 1009.0 1013.6 1014.0 1008.8 1000.5 DAY-HOUR 17- 3 23- 3 29- 9 13-12 31-15 9-15 5-15 1-15 13-12 1-15 15-12 4-21 MEAN QFF PRESSURE IN HPA 1025.2 1027.5 1014.6 1013.8 1010.2 1002.5 1001.5 1001.9 1007.7 1014.9 1018.2 1018.8 1013.1 MAX. QFF PRESSURE IN HPA 1037.4 1040.2 1023.8 1021.2 1021.3 1009.6 1008.8 1013.3 1024.7 1028.2 1027.1 1026.8 1040.2 DAY-HOUR 30-18 4- 6 7- 6 2- 3 1- 3 7- 3 10- 3 19- 3 23- 3 24- 3 22- 6 18-18 MIN. QFF PRESSURE IN HPA 1014.2 1013.2 998.2 1005.2 999.4 994.2 992.5 993.0 997.5 1004.0 1010.3 1009.9 992.5 DAY-HOUR 2-12 23- 0 29- 9 29- 0 31-12 30-15 5-15 1-12 12-12 1-21 15-12 4-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 841.3 843.3 839.1 843.0 842.3 839.1 839.6 839.5 841.5 845.1 844.3 841.9 841.7 MAX. QFE PRESSURE IN HPA 847.4 849.4 844.4 846.8 845.0 841.8 843.0 844.1 849.1 849.7 847.9 846.4 849.7 DAY 22 4 8 11 22 4 20 19 24 27 8 19 MIN. QFE PRESSURE IN HPA 834.4 834.8 829.0 839.5 838.1 834.3 835.0 834.7 836.6 839.4 839.4 834.2 829.0 DAY 17 23 16 14 31 10 6 2 13 2 20 5 MEAN QNH PRESSURE IN HPA 1017.1 1019.3 1014.5 1019.0 1018.2 1014.5 1015.1 1015.0 1017.3 1021.4 1020.6 1017.7 1017.5 MAX. QNH PRESSURE IN HPA 1024.2 1026.5 1020.7 1023.5 1021.4 1017.6 1019.0 1020.3 1026.1 1026.8 1024.7 1023.0 1026.8 DAY 22 4 8 11 22 4 20 19 24 27 8 19 MIN. QNH PRESSURE IN HPA 1009.0 1009.5 1002.7 1014.9 1013.3 1008.9 1009.7 1009.4 1011.6 1014.8 1014.8 1008.8 1002.7 DAY 17 23 16 14 31 10 6 2 13 2 20 5 MEAN QFF PRESSURE IN HPA 1024.2 1026.6 1014.0 1013.7 1010.4 1002.7 1001.5 1001.7 1007.3 1014.6 1017.7 1018.1 1012.7 MAX. QFF PRESSURE IN HPA 1034.5 1038.3 1021.9 1019.6 1018.6 1007.6 1006.8 1011.6 1022.9 1025.8 1023.8 1023.8 1038.3 DAY 31 4 12 2 1 13 10 19 23 24 22 19 MIN. QFF PRESSURE IN HPA 1014.8 1013.2 1001.6 1005.2 1001.1 996.7 995.7 995.3 1000.1 1004.9 1010.8 1010.9 995.3 DAY 3 23 16 29 31 30 6 2 13 2 20 5 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 841.3 843.4 839.4 843.4 842.9 839.8 840.5 840.3 842.2 845.4 844.6 842.0 842.1 MAX. QFE PRESSURE IN HPA 847.6 849.4 844.5 846.8 845.7 842.7 844.0 844.5 849.6 850.4 848.3 846.0 850.4 DAY 22 4 8 11 21 26 20 19 24 27 8 19 MIN. QFE PRESSURE IN HPA 833.6 834.4 829.0 840.1 837.9 835.5 836.0 835.1 836.9 839.7 840.5 836.0 829.0 DAY 17 23 29 14 7 10 6 1 13 2 20 5 MEAN QNH PRESSURE IN HPA 1017.1 1019.5 1014.8 1019.5 1019.0 1015.4 1016.2 1015.8 1018.1 1021.9 1020.9 1017.9 1018.0 MAX. QNH PRESSURE IN HPA 1024.4 1026.5 1020.8 1023.5 1022.2 1018.7 1020.2 1020.8 1026.7 1027.7 1025.2 1022.5 1027.7 DAY 22 4 8 11 21 26 20 19 24 27 8 19 MIN. QNH PRESSURE IN HPA 1008.1 1009.0 1002.7 1015.7 1013.1 1010.3 1010.9 1009.8 1011.9 1015.2 1016.1 1010.9 1002.7 DAY 17 23 29 14 7 10 6 1 13 2 20 5 MEAN QFF PRESSURE IN HPA 1025.5 1028.0 1015.2 1015.3 1012.0 1004.4 1003.7 1004.1 1010.0 1016.6 1019.4 1019.6 1014.5 MAX. QFF PRESSURE IN HPA 1035.1 1039.9 1023.1 1021.2 1021.3 1009.6 1008.8 1013.3 1024.7 1028.2 1025.9 1025.0 1039.9 DAY 30 4 12 2 1 7 10 19 23 24 22 19 MIN. QFF PRESSURE IN HPA 1015.7 1013.5 1001.7 1007.8 1003.0 998.2 998.2 996.6 1002.2 1006.1 1013.5 1013.5 996.6 DAY 17 23 29 29 31 30 1 1 13 2 20 5 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 842.4 844.2 840.2 844.0 843.2 840.0 840.7 840.7 842.7 846.2 845.5 842.8 842.7 MAX. QFE PRESSURE IN HPA 849.0 850.5 845.3 847.1 846.2 842.8 844.1 844.8 850.1 851.1 849.1 847.3 851.1 DAY 22 25 8 11 20 4 20 19 24 27 8 18 MIN. QFE PRESSURE IN HPA 834.3 835.6 829.1 840.5 838.5 835.1 836.2 835.2 837.5 840.3 841.5 837.9 829.1 DAY 17 23 29 29 7 10 6 1 13 2 19 5 MEAN QNH PRESSURE IN HPA 1018.3 1020.5 1015.7 1020.2 1019.2 1015.5 1016.4 1016.3 1018.7 1022.8 1021.9 1018.8 1018.7 MAX. QNH PRESSURE IN HPA 1026.0 1027.8 1021.7 1023.8 1022.8 1018.8 1020.3 1021.1 1027.3 1028.5 1026.1 1024.0 1028.5 DAY 22 25 8 11 20 4 20 19 24 27 8 18 MIN. QNH PRESSURE IN HPA 1008.9 1010.4 1002.8 1016.1 1013.8 1009.8 1011.1 1009.9 1012.6 1015.9 1017.3 1013.1 1002.8 DAY 17 23 29 29 7 10 6 1 13 2 19 5 MEAN QFF PRESSURE IN HPA 1026.7 1029.0 1015.8 1014.6 1011.1 1003.6 1003.0 1003.5 1009.4 1016.2 1019.9 1020.5 1014.4 MAX. QFF PRESSURE IN HPA 1036.9 1040.2 1023.8 1020.2 1019.1 1008.6 1008.2 1011.4 1022.6 1026.2 1027.1 1026.2 1040.2 DAY 30 4 7 2 1 7 10 19 23 24 22 18 MIN. QFF PRESSURE IN HPA 1014.9 1014.6 1002.4 1009.1 1002.4 995.9 996.8 996.8 1002.7 1006.6 1014.3 1015.9 995.9 DAY 17 23 29 29 31 10 6 1 12 2 19 5 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 841.8 843.9 839.7 843.2 842.3 839.1 839.8 839.7 841.4 844.9 844.3 841.8 841.8 MAX. QFE PRESSURE IN HPA 847.9 849.9 845.0 846.4 845.4 842.0 842.8 843.7 849.1 849.3 848.1 846.9 849.9 DAY 22 25 8 10 20 4 20 19 23 24 8 18 MIN. QFE PRESSURE IN HPA 834.4 836.4 827.1 840.0 838.0 834.0 835.3 833.7 836.1 839.7 840.0 838.2 827.1 DAY 17 23 29 29 31 10 6 1 13 2 15 4 MEAN QNH PRESSURE IN HPA 1017.6 1020.0 1015.2 1019.3 1018.2 1014.4 1015.3 1015.2 1017.1 1021.3 1020.5 1017.7 1017.7 MAX. QNH PRESSURE IN HPA 1024.7 1027.1 1021.4 1023.0 1021.8 1017.9 1018.8 1019.8 1026.1 1026.4 1025.0 1023.6 1027.1 DAY 22 25 8 10 20 4 20 19 23 24 8 18 MIN. QNH PRESSURE IN HPA 1009.0 1011.3 1000.5 1015.5 1013.2 1008.5 1010.1 1008.2 1011.0 1015.2 1015.5 1013.4 1000.5 DAY 17 23 29 29 31 10 6 1 13 2 15 4 MEAN QFF PRESSURE IN HPA 1024.9 1027.2 1014.4 1013.3 1009.9 1002.3 1001.3 1001.6 1007.0 1014.0 1017.6 1018.1 1012.6 MAX. QFF PRESSURE IN HPA 1035.1 1037.7 1021.7 1018.9 1016.5 1007.1 1006.1 1009.3 1020.7 1024.1 1024.0 1024.2 1037.7 DAY 30 4 3 2 1 6 25 19 23 24 22 18 MIN. QFF PRESSURE IN HPA 1015.5 1015.6 998.2 1007.8 1002.0 995.9 995.7 994.4 999.0 1005.0 1011.5 1013.6 994.4 DAY 17 23 29 15 31 30 6 1 11 2 30 11 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 841.0 843.2 838.7 842.1 841.1 837.8 838.3 838.1 840.0 843.7 843.3 841.2 840.7 MAX. QFE PRESSURE IN HPA 845.9 848.7 844.1 845.2 844.3 840.9 841.4 842.6 847.7 847.8 847.2 846.4 848.7 DAY 22 25 8 10 20 3 20 19 23 24 8 18 MIN. QFE PRESSURE IN HPA 834.9 835.8 827.7 838.1 836.3 832.9 833.4 832.4 834.4 838.7 838.7 837.2 827.7 DAY 17 1 29 13 31 9 5 1 13 1 15 4 MEAN QNH PRESSURE IN HPA 1016.7 1019.2 1014.0 1017.9 1016.9 1012.9 1013.6 1013.4 1015.5 1019.8 1019.4 1016.9 1016.4 MAX. QNH PRESSURE IN HPA 1022.4 1025.7 1020.3 1021.6 1020.5 1016.6 1017.2 1018.6 1024.5 1024.6 1023.9 1023.0 1025.7 DAY 22 25 8 10 20 3 20 19 23 24 8 18 MIN. QNH PRESSURE IN HPA 1009.6 1010.6 1001.2 1013.3 1011.2 1007.3 1007.8 1006.7 1009.0 1014.0 1014.0 1012.3 1001.2 DAY 17 1 29 13 31 9 5 1 13 1 15 4 MEAN QFF PRESSURE IN HPA 1023.8 1026.2 1013.5 1012.5 1008.9 1001.1 1000.0 1000.1 1005.6 1013.1 1016.4 1017.3 1011.5 MAX. QFF PRESSURE IN HPA 1033.4 1036.1 1020.7 1018.2 1015.6 1005.8 1004.4 1008.7 1020.6 1024.3 1021.7 1023.4 1036.1 DAY 30 4 11 2 1 13 10 18 22 23 22 18 MIN. QFF PRESSURE IN HPA 1014.2 1014.4 1000.7 1006.8 999.4 994.5 993.2 993.0 997.5 1004.2 1010.3 1012.6 993.0 DAY 2 23 29 15 31 30 5 1 12 2 15 11 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 841.4 843.5 838.8 842.3 841.1 837.5 837.9 837.9 840.0 844.3 843.8 841.8 840.9 MAX. QFE PRESSURE IN HPA 846.5 848.7 843.9 845.7 844.5 841.0 841.6 842.6 847.7 848.3 847.6 847.5 848.7 DAY 21 5 7 10 13 3 9 19 23 23 7 18 MIN. QFE PRESSURE IN HPA 836.1 836.6 829.5 838.5 836.0 832.4 831.7 831.8 834.4 838.3 839.5 836.0 829.5 DAY 2 22 29 13 31 9 5 1 13 1 15 4 MEAN QNH PRESSURE IN HPA 1017.1 1019.7 1014.1 1018.2 1016.8 1012.6 1013.1 1013.1 1015.5 1020.5 1020.0 1017.7 1016.5 MAX. QNH PRESSURE IN HPA 1023.1 1025.7 1020.1 1022.2 1020.8 1016.7 1017.4 1018.6 1024.5 1025.2 1024.4 1024.3 1025.7 DAY 21 5 7 10 13 3 9 19 23 23 7 18 MIN. QNH PRESSURE IN HPA 1011.0 1011.6 1003.3 1013.8 1010.9 1006.7 1005.9 1006.0 1009.0 1013.6 1014.9 1010.9 1003.3 DAY 2 22 29 13 31 9 5 1 13 1 15 4 MEAN QFF PRESSURE IN HPA 1025.5 1027.9 1014.4 1013.8 1009.6 1001.5 1000.6 1001.3 1007.2 1015.3 1018.4 1019.3 1012.9 MAX. QFF PRESSURE IN HPA 1036.9 1038.6 1021.5 1018.4 1016.0 1007.8 1006.2 1009.6 1021.1 1026.4 1024.7 1026.3 1038.6 DAY 30 3 11 30 1 6 9 18 22 23 22 18 MIN. QFF PRESSURE IN HPA 1015.1 1016.9 1001.6 1008.3 999.7 994.2 992.5 993.6 999.0 1006.0 1012.9 1012.8 992.5 DAY 2 23 28 17 31 30 5 1 13 1 19 4 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 841.9 844.0 839.7 843.5 842.2 838.7 839.1 839.2 841.3 845.3 844.5 842.2 841.8 MAX. QFE PRESSURE IN HPA 847.8 849.6 844.8 847.1 845.5 841.9 842.8 844.1 848.8 849.4 847.9 848.1 849.6 DAY 21 3 6 10 20 3 9 18 23 26 7 18 MIN. QFE PRESSURE IN HPA 836.1 835.7 830.9 840.3 837.6 833.7 833.6 833.0 836.2 839.3 840.0 835.3 830.9 DAY 2 22 28 13 31 9 5 1 12 1 15 4 MEAN QNH PRESSURE IN HPA 1017.7 1020.2 1015.1 1019.6 1018.1 1014.1 1014.5 1014.6 1017.0 1021.7 1020.8 1018.0 1017.6 MAX. QNH PRESSURE IN HPA 1024.6 1026.7 1021.1 1023.8 1021.9 1017.7 1018.8 1020.3 1025.8 1026.5 1024.7 1025.0 1026.7 DAY 21 3 6 10 20 3 9 18 23 26 7 18 MIN. QNH PRESSURE IN HPA 1011.0 1010.5 1004.9 1015.9 1012.7 1008.2 1008.1 1007.4 1011.1 1014.7 1015.5 1010.1 1004.9 DAY 2 22 28 13 31 9 5 1 12 1 15 4 MEAN QFF PRESSURE IN HPA 1026.2 1028.4 1015.2 1013.9 1009.8 1002.1 1001.0 1001.7 1007.7 1015.2 1018.7 1019.7 1013.3 MAX. QFF PRESSURE IN HPA 1037.4 1039.9 1022.7 1019.1 1016.0 1008.3 1005.5 1011.0 1022.6 1025.0 1025.2 1026.8 1039.9 DAY 30 3 6 30 1 6 9 18 22 23 22 18 MIN. QFF PRESSURE IN HPA 1015.6 1015.9 1004.9 1007.5 1001.4 995.1 993.2 994.0 1000.3 1005.5 1012.0 1011.7 993.2 DAY 2 22 27 17 30 9 5 1 13 1 19 4 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 841.6 843.8 839.6 843.6 842.3 839.0 839.5 839.6 841.5 845.3 844.4 842.0 841.9 MAX. QFE PRESSURE IN HPA 848.2 849.5 844.6 847.1 845.3 842.1 842.8 843.5 849.1 849.7 847.9 847.5 849.7 DAY 21 3 6 10 20 3 9 18 23 26 7 18 MIN. QFE PRESSURE IN HPA 835.8 835.1 830.7 840.1 838.4 833.9 834.6 833.4 836.6 838.7 839.6 834.2 830.7 DAY 2 22 15 13 6 9 5 1 12 1 19 4 MEAN QNH PRESSURE IN HPA 1017.4 1019.9 1015.1 1019.7 1018.2 1014.4 1015.0 1015.1 1017.3 1021.7 1020.6 1017.8 1017.7 MAX. QNH PRESSURE IN HPA 1025.1 1026.6 1020.9 1023.8 1021.7 1018.0 1018.8 1019.6 1026.1 1026.8 1024.7 1024.3 1026.8 DAY 21 3 6 10 20 3 9 18 23 26 7 18 MIN. QNH PRESSURE IN HPA 1010.6 1009.8 1004.7 1015.7 1013.7 1008.4 1009.2 1007.8 1011.6 1014.0 1015.1 1008.8 1004.7 DAY 2 22 15 13 6 9 5 1 12 1 19 4 MEAN QFF PRESSURE IN HPA 1024.8 1026.8 1014.3 1013.7 1009.8 1002.1 1001.0 1001.4 1007.2 1014.6 1017.6 1018.3 1012.6 MAX. QFF PRESSURE IN HPA 1035.1 1038.5 1021.9 1019.2 1015.9 1008.1 1005.3 1010.1 1022.2 1024.8 1024.4 1025.4 1038.5 DAY 30 3 6 1 1 6 9 18 22 23 21 18 MIN. QFF PRESSURE IN HPA 1014.6 1013.9 1002.7 1006.1 1002.2 995.7 994.9 993.2 999.7 1004.0 1010.4 1009.9 993.2 DAY 2 22 15 28 30 30 5 1 12 1 19 4 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -3.8 -2.4 3.9 10.7 16.2 21.9 23.2 22.3 20.6 12.5 9.1 2.2 11.4 MINIMUN AIR TEMPERATURE (C) -7.5 -6.8 -1.2 4.1 8.1 12.7 15.8 14.1 11.5 5.5 2.7 -3.2 4.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 24 18 6 0 0 0 0 0 0 0 0 13 61 DAYS WITH FREEZING MIN.<= 0 30 28 20 3 0 0 0 0 0 0 9 19 109 TEMPERATURE RECORDS LOWEST(C) -15.2 -12.6 -8.6 -1.7 3.2 8.0 9.0 10.0 8.2 0.4 -3.2 -14.8 -15.2 DAY 12 20 17 3 14 1 6 21 17 19 14 27 MAXIMUM AIR TEMPERATURE (C) 0.8 1.8 10.4 17.6 24.0 30.2 30.8 30.9 30.5 20.8 17.1 7.9 18.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 1 19 21 19 17 0 0 0 77 DAYS WITH MAXIMUM TEMP. <= 0 13 12 2 0 0 0 0 0 0 0 0 5 32 TEMPERATURE RECORDS HIGHEST(C) 5.8 7.2 16.6 27.8 30.0 33.7 36.8 37.8 34.3 25.8 23.0 19.0 37.8 DAY 5 28 24 27 25 26 27 7 13 4 5 3 DIF. BETWEEN (MAX.-MIN.) (C) 8.3 8.6 11.6 13.5 15.9 17.5 15.0 16.8 19.0 15.3 14.4 11.1 14.0 MEAN DAILY TEMP. (MDT) (C) -3.3 -2.5 4.6 10.8 16.1 21.5 23.3 22.5 21.0 13.1 9.9 2.3 11.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 37.7 94.8 65.5 18.4 0.0 0.0 0.0 216.5 HEATING DEG. DAYS(BASE 18 0C) 661.6 573.3 416.3 215.9 71.2 3.2 3.9 1.4 0.0 150.5 243.6 486.6 2827.5 DEWPOINT (MEAN C) -8.1 -6.8 -4.2 -1.0 0.8 3.5 8.4 7.9 2.5 1.8 -3.3 -6.5 -0.4 MIXING RATIO (G/KG) 2.60 2.82 3.49 4.40 5.19 6.14 8.43 8.20 5.74 5.35 3.71 2.92 4.92 VAPOUR PRESSURE (HPA) 3.50 3.78 4.70 5.90 6.95 8.20 11.20 10.92 7.68 7.21 5.00 3.94 6.58 SATURATION DEF. (HPA) 1.29 1.50 3.89 7.99 12.69 19.68 18.88 17.72 18.31 8.22 7.29 4.10 10.13 RELATIVE HUMIDITY (MEAN %) 74 73 60 50 41 34 43 45 35 53 45 57 51 RELATIVE HUMIDITY (MAX. %) 86 85 83 75 60 52 63 68 58 76 64 74 70 RELATIVE HUMIDITY (MIN. %) 58 60 37 28 24 19 26 25 16 28 24 40 32 RELATIVE HUMIDITY (MEAN% 03UTC) 78 81 75 70 54 48 60 64 53 70 61 68 65 RELATIVE HUMIDITY (MEAN% 09UTC) 64 64 44 33 29 23 29 27 19 34 27 45 37 RELATIVE HUMIDITY (MEAN% 15UTC) 75 71 52 40 33 28 37 37 27 50 41 53 45 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 20.5 46.4 26.8 32.8 20.2 0.6 3.1 0.2 0.0 25.2 3.1 18.7 197.6 DAYS WITH PRECIPITATION >=10 0 2 1 1 0 0 0 0 0 1 0 1 6 DAYS WITH PRECIPITATION >= 5 0 4 2 2 2 0 0 0 0 2 0 1 13 DAYS WITH PRECIPITATION >= 1 7 7 4 4 3 0 1 0 0 3 1 3 33 DAYS WITH PRECIPITATION 13 11 14 11 4 1 4 2 0 8 3 6 77 GREATEST DAILY PRECIPITATION 4.5 14.0 16.0 19.0 9.0 0.6 3.0 0.2 0.0 17.6 2.4 10.0 19.0 DAY 10 10 11 2 12 15 5 1 ** 28 12 24 DAY WITH THUNDER STORM 0 0 1 4 1 1 0 0 0 2 1 0 10 DAYS WITH SNOW OR SLEET 14 11 4 1 0 0 0 0 0 0 0 5 35 DAYS WITH DUST 0 0 1 2 3 4 4 4 0 1 1 0 20 WIND DIRECTION (PREVAILING) 315 315 315 315 315 360 360 360 315 315 315 315 315 PREVAILING WIND SPEED(KNOTS) 6.8 7.1 5.3 5.7 6.2 13.3 16.7 14.1 4.2 4.4 3.8 6.9 5.8 PREVAILING WIND PERCENT 32.7 32.6 23.8 29.2 15.3 18.3 21.8 21.8 18.3 14.5 23.8 31.0 20.7 CALMS PERCENT OF WIND 35.1 37.9 30.6 23.3 27.4 22.9 27.0 31.0 30.0 34.3 40.4 33.9 31.1 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 322 308 346 279 335 357 32 39 36 347 257 317 347 VECTOR WIND MAGNITUDE(KNOTS) 3.5 2.7 3.3 3.3 2.2 2.8 6.0 4.1 1.4 1.8 0.8 2.8 2.2 WIND STEADINESES (MEAN %) 70.0 64.3 54.1 60.0 35.5 41.2 71.4 57.7 31.1 39.1 27.6 62.2 40.0 WIND SPEED (MEAN KNOTS) 5.0 4.2 6.1 5.5 6.2 6.8 8.4 7.1 4.5 4.6 2.9 4.5 5.5 FASTEST WIND DIRECTION 20 100 130 260 210 10 10 10 30 10 210 360 10 FASTEST WIND SPEED (KNOTS) 23 17 35 29 29 35 39 39 31 35 17 39 39 DAY 5 19 16 19 2 29 11 1 2 14 11 25 DAYS WITH SKY CLEAR (0-2)/8 7 12 11 8 20 26 17 28 30 19 17 10 205 DAYS WITH P.CLOUDY (3-6)/8 11 7 14 17 8 3 14 3 0 9 12 15 113 DAYS WITH CLOUDY (7-8)/8 13 9 6 5 3 1 0 0 0 3 1 6 47 DAYS WITH VISIBILITY =< 2 KM 5 7 2 5 0 0 0 0 0 0 0 3 22 DURATION OF SUNSHINE HOURS 114.7 ****** 199.6 ****** 326.2 ****** ****** ****** ****** ****** ****** 166.9 ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 842.2 839.8 843.3 839.4 840.7 838.7 838.4 839.3 840.9 845.1 845.3 843.4 841.4 MAX. QFE PRESSURE IN HPA 850.4 848.7 851.6 845.6 846.8 845.1 843.4 844.4 846.4 852.8 853.6 851.1 853.6 DAY-HOUR 26- 6 8- 6 10- 6 24- 6 16- 6 1- 6 17- 6 29- 6 27- 6 19- 6 23- 6 28- 6 MIN. QFE PRESSURE IN HPA 834.0 829.5 835.9 830.6 832.3 830.9 833.0 833.1 836.0 838.4 838.4 835.4 829.5 DAY-HOUR 23- 0 15-12 24-12 15-12 13- 0 26-15 29-15 7-15 10-12 1-12 1-12 24-21 MEAN QNH PRESSURE IN HPA 1018.1 1015.3 1019.4 1014.9 1016.3 1014.0 1013.7 1014.7 1016.6 1021.5 1021.7 1019.5 1017.1 MAX. QNH PRESSURE IN HPA 1027.7 1025.7 1029.1 1022.1 1023.5 1021.5 1019.5 1020.7 1023.0 1030.5 1031.4 1028.5 1031.4 DAY-HOUR 26- 6 8- 6 10- 6 24- 6 16- 6 1- 6 17- 6 29- 6 27- 6 19- 6 23- 6 28- 6 MIN. QNH PRESSURE IN HPA 1008.5 1003.3 1010.8 1004.6 1006.5 1004.9 1007.4 1007.5 1010.9 1013.7 1013.7 1010.2 1003.3 DAY-HOUR 23- 0 15-12 24-12 15-12 13- 0 26-15 29-15 7-15 10-12 1-12 1-12 24-21 MEAN QFF PRESSURE IN HPA 1024.1 1020.3 1020.0 1010.6 1008.5 1002.5 1001.3 1002.9 1006.0 1016.1 1018.8 1021.4 1012.7 MAX. QFF PRESSURE IN HPA 1037.7 1033.6 1036.1 1021.6 1018.8 1012.1 1008.6 1012.4 1013.7 1030.3 1030.9 1039.8 1039.8 DAY-HOUR 12- 3 8- 6 17- 6 3- 3 15- 3 1- 3 9- 3 29- 6 24- 3 16- 3 14- 3 28- 6 MIN. QFF PRESSURE IN HPA 1011.2 1005.9 1007.8 997.5 999.0 991.9 993.1 992.6 998.6 1005.3 1007.5 1012.2 991.9 DAY-HOUR 23- 0 15-12 24-12 15-12 2-12 26-15 27-21 7-12 1-12 1-12 1- 0 18- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 841.9 839.6 843.2 839.6 840.7 838.9 838.6 839.6 841.1 845.1 845.2 843.4 841.4 MAX. QFE PRESSURE IN HPA 848.8 847.8 850.5 845.1 845.7 843.2 842.1 843.4 844.6 851.8 852.7 850.3 852.7 DAY 27 8 10 24 16 1 9 29 24 16 23 28 MIN. QFE PRESSURE IN HPA 834.0 831.0 838.5 833.6 832.3 833.1 835.6 835.9 837.7 839.8 838.5 835.4 831.0 DAY 23 16 25 2 13 27 30 7 5 14 1 25 MEAN QNH PRESSURE IN HPA 1017.8 1015.1 1019.3 1015.0 1016.3 1014.3 1013.9 1015.1 1016.8 1021.5 1021.6 1019.5 1017.2 MAX. QNH PRESSURE IN HPA 1025.8 1024.6 1027.8 1021.5 1022.2 1019.3 1018.0 1019.5 1020.9 1029.3 1030.3 1027.5 1030.3 DAY 27 8 10 24 16 1 9 29 24 16 23 28 MIN. QNH PRESSURE IN HPA 1008.5 1005.0 1013.8 1008.1 1006.5 1007.5 1010.4 1010.8 1012.9 1015.3 1013.8 1010.2 1005.0 DAY 23 16 25 2 13 27 30 7 5 14 1 25 MEAN QFF PRESSURE IN HPA 1023.3 1019.7 1019.4 1010.5 1008.4 1002.8 1001.2 1003.0 1005.7 1015.6 1017.8 1020.5 1012.3 MAX. QFF PRESSURE IN HPA 1035.2 1032.4 1034.6 1019.5 1016.0 1010.3 1008.0 1010.1 1011.6 1028.6 1030.4 1038.2 1038.2 DAY 12 8 17 3 15 1 9 30 28 16 14 28 MIN. QFF PRESSURE IN HPA 1011.2 1007.5 1009.6 1000.6 1001.6 994.3 994.4 995.9 1001.0 1006.0 1007.5 1012.2 994.3 DAY 23 16 5 29 3 27 28 7 5 1 1 18 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 841.9 839.8 843.4 839.8 841.2 839.8 839.4 840.3 841.8 845.5 845.4 843.5 841.8 MAX. QFE PRESSURE IN HPA 849.0 848.0 850.6 845.4 846.3 844.9 843.3 844.1 845.1 852.3 852.7 850.3 852.7 DAY 26 8 10 24 16 1 17 29 27 16 23 28 MIN. QFE PRESSURE IN HPA 835.4 832.3 839.0 833.4 832.7 833.8 836.2 836.3 838.1 839.7 838.9 835.8 832.3 DAY 18 16 5 2 13 27 2 7 5 14 1 25 MEAN QNH PRESSURE IN HPA 1017.8 1015.2 1019.5 1015.3 1016.9 1015.3 1014.8 1015.8 1017.6 1022.0 1021.9 1019.7 1017.7 MAX. QNH PRESSURE IN HPA 1026.0 1024.9 1027.9 1021.8 1022.9 1021.2 1019.4 1020.3 1021.5 1029.9 1030.3 1027.5 1030.3 DAY 26 8 10 24 16 1 17 29 27 16 23 28 MIN. QNH PRESSURE IN HPA 1010.2 1006.5 1014.4 1007.8 1007.0 1008.3 1011.1 1011.2 1013.3 1015.2 1014.2 1010.6 1006.5 DAY 18 16 5 2 13 27 2 7 5 14 1 25 MEAN QFF PRESSURE IN HPA 1024.2 1020.8 1020.7 1011.9 1009.9 1004.4 1003.2 1005.2 1008.3 1018.0 1020.2 1022.2 1014.1 MAX. QFF PRESSURE IN HPA 1037.7 1032.6 1035.5 1021.6 1018.8 1012.1 1008.6 1012.3 1013.7 1030.3 1030.9 1039.0 1039.0 DAY 12 8 17 3 15 1 9 30 24 16 14 28 MIN. QFF PRESSURE IN HPA 1013.3 1009.7 1011.2 1000.3 1003.0 995.1 997.2 997.4 1002.7 1007.9 1008.6 1013.5 995.1 DAY 23 16 5 29 2 27 30 7 5 14 1 18 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 842.9 840.6 844.2 840.1 841.6 840.0 839.7 840.6 842.4 846.3 846.4 844.4 842.4 MAX. QFE PRESSURE IN HPA 850.4 848.7 851.6 845.6 846.8 845.1 843.4 844.4 846.4 852.8 853.6 851.1 853.6 DAY 26 8 10 24 16 1 17 29 27 19 23 28 MIN. QFE PRESSURE IN HPA 836.6 833.4 839.3 834.5 833.9 834.0 836.2 836.7 838.6 841.3 840.1 835.9 833.4 DAY 23 10 24 2 13 27 2 7 5 14 1 25 MEAN QNH PRESSURE IN HPA 1018.9 1016.3 1020.5 1015.7 1017.4 1015.6 1015.1 1016.2 1018.3 1022.9 1023.0 1020.7 1018.4 MAX. QNH PRESSURE IN HPA 1027.7 1025.7 1029.1 1022.1 1023.5 1021.5 1019.5 1020.7 1023.0 1030.5 1031.4 1028.5 1031.4 DAY 26 8 10 24 16 1 17 29 27 19 23 28 MIN. QNH PRESSURE IN HPA 1011.6 1007.8 1014.7 1009.1 1008.4 1008.5 1011.1 1011.7 1013.9 1017.0 1015.7 1010.8 1007.8 DAY 23 10 24 2 13 27 2 7 5 14 1 25 MEAN QFF PRESSURE IN HPA 1025.4 1021.5 1021.3 1011.4 1009.4 1003.8 1002.7 1004.4 1007.7 1017.4 1020.6 1023.1 1014.1 MAX. QFF PRESSURE IN HPA 1036.7 1033.6 1036.1 1020.9 1017.9 1010.8 1007.5 1012.4 1012.8 1029.1 1030.9 1039.8 1039.8 DAY 26 8 17 3 15 1 31 29 27 16 14 28 MIN. QFF PRESSURE IN HPA 1015.1 1011.3 1012.1 1000.8 1002.1 994.3 997.0 996.3 1001.6 1008.8 1010.0 1016.3 994.3 DAY 4 15 24 29 2 27 27 7 5 1 1 18 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 842.3 840.0 843.4 839.3 840.8 838.8 838.7 839.4 841.1 845.1 845.2 843.4 841.5 MAX. QFE PRESSURE IN HPA 849.8 847.8 850.9 844.5 846.0 843.6 842.3 843.4 845.0 851.3 852.3 850.1 852.3 DAY 26 8 9 24 16 1 17 29 27 19 23 28 MIN. QFE PRESSURE IN HPA 836.1 831.6 837.3 832.3 833.8 833.4 835.1 835.2 837.5 840.1 839.1 835.7 831.6 DAY 17 19 24 15 13 27 2 7 5 1 1 25 MEAN QNH PRESSURE IN HPA 1018.2 1015.6 1019.5 1014.7 1016.4 1014.1 1014.0 1014.8 1016.8 1021.5 1021.6 1019.5 1017.2 MAX. QNH PRESSURE IN HPA 1027.0 1024.6 1028.2 1020.8 1022.5 1019.7 1018.2 1019.5 1021.4 1028.7 1029.9 1027.3 1029.9 DAY 26 8 9 24 16 1 17 29 27 19 23 28 MIN. QNH PRESSURE IN HPA 1011.0 1005.7 1012.4 1006.5 1008.3 1007.8 1009.8 1009.9 1012.6 1015.7 1014.5 1010.5 1005.7 DAY 17 19 24 15 13 27 2 7 5 1 1 25 MEAN QFF PRESSURE IN HPA 1023.7 1020.0 1019.7 1010.0 1008.1 1002.2 1001.0 1002.3 1005.5 1015.3 1017.8 1020.7 1012.2 MAX. QFF PRESSURE IN HPA 1035.2 1031.8 1034.1 1016.6 1015.9 1009.6 1006.4 1009.7 1010.8 1027.2 1027.5 1037.0 1037.0 DAY 12 8 17 3 16 1 8 29 27 15 14 28 MIN. QFF PRESSURE IN HPA 1013.9 1007.4 1009.5 1000.0 1000.0 993.7 994.5 993.3 1000.0 1005.7 1007.8 1014.6 993.3 DAY 4 19 24 15 2 27 27 7 5 1 1 18 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 841.5 839.2 842.3 838.4 839.6 837.4 837.4 837.8 839.5 844.0 844.3 842.6 840.3 MAX. QFE PRESSURE IN HPA 849.0 846.6 850.2 843.0 844.3 842.1 840.7 842.3 843.4 850.4 851.7 849.4 851.7 DAY 26 8 9 25 16 4 8 29 23 15 22 28 MIN. QFE PRESSURE IN HPA 834.8 829.5 835.9 830.6 833.8 831.9 833.9 833.5 836.0 838.4 838.4 836.5 829.5 DAY 17 15 24 15 13 26 29 7 10 1 1 25 MEAN QNH PRESSURE IN HPA 1017.3 1014.6 1018.2 1013.7 1015.1 1012.5 1012.5 1013.0 1015.0 1020.2 1020.6 1018.6 1015.9 MAX. QNH PRESSURE IN HPA 1026.0 1023.2 1027.4 1019.0 1020.5 1018.0 1016.4 1018.2 1019.5 1027.7 1029.2 1026.5 1029.2 DAY 26 8 9 25 16 4 8 29 23 15 22 28 MIN. QNH PRESSURE IN HPA 1009.5 1003.3 1010.8 1004.6 1008.3 1006.1 1008.4 1008.0 1010.9 1013.7 1013.7 1011.4 1003.3 DAY 17 15 24 15 13 26 29 7 10 1 1 25 MEAN QFF PRESSURE IN HPA 1022.8 1019.1 1018.3 1009.2 1007.1 1001.1 999.8 1000.8 1003.8 1014.4 1016.8 1019.7 1011.1 MAX. QFF PRESSURE IN HPA 1033.7 1030.7 1032.1 1016.7 1014.1 1008.8 1006.2 1009.0 1009.3 1026.5 1027.3 1035.8 1035.8 DAY 26 8 17 3 15 7 31 29 27 15 14 28 MIN. QFF PRESSURE IN HPA 1013.1 1005.9 1007.8 997.5 999.0 992.9 993.8 992.6 998.6 1005.3 1007.9 1012.8 992.6 DAY 4 15 24 15 2 26 29 7 1 1 1 9 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 842.1 839.6 842.7 838.6 839.7 837.1 837.1 837.6 839.5 844.5 845.0 843.1 840.5 MAX. QFE PRESSURE IN HPA 849.4 847.0 850.6 843.6 843.8 841.9 840.5 842.3 843.6 851.2 853.0 850.6 853.0 DAY 26 7 9 24 15 4 8 29 23 15 22 28 MIN. QFE PRESSURE IN HPA 834.8 829.8 837.5 831.6 834.3 830.9 833.0 833.1 836.2 839.6 838.9 836.8 829.8 DAY 17 15 24 15 12 26 29 7 10 1 1 24 MEAN QNH PRESSURE IN HPA 1017.9 1015.1 1018.7 1013.9 1015.2 1012.2 1012.1 1012.8 1015.0 1020.8 1021.3 1019.1 1016.2 MAX. QNH PRESSURE IN HPA 1026.5 1023.7 1027.9 1019.7 1020.0 1017.7 1016.1 1018.2 1019.7 1028.6 1030.7 1027.9 1030.7 DAY 26 7 9 24 15 4 8 29 23 15 22 28 MIN. QNH PRESSURE IN HPA 1009.5 1003.6 1012.6 1005.7 1008.9 1004.9 1007.4 1007.5 1011.1 1015.1 1014.2 1011.8 1003.6 DAY 17 15 24 15 12 26 29 7 10 1 1 24 MEAN QFF PRESSURE IN HPA 1024.4 1020.5 1019.8 1010.3 1008.0 1001.3 1000.5 1001.9 1005.6 1016.7 1019.7 1021.7 1012.5 MAX. QFF PRESSURE IN HPA 1035.6 1031.7 1033.2 1017.5 1015.8 1008.0 1006.3 1010.3 1012.0 1028.5 1030.5 1038.4 1038.4 DAY 19 7 17 3 15 7 8 29 23 15 14 27 MIN. QFF PRESSURE IN HPA 1013.4 1006.9 1011.5 1001.1 1002.0 991.9 993.6 993.8 1000.5 1009.0 1008.6 1013.9 991.9 DAY 4 15 5 15 2 26 27 7 10 3 9 9 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 842.6 840.1 843.7 839.8 841.0 838.5 838.3 839.4 840.9 845.4 845.6 843.6 841.6 MAX. QFE PRESSURE IN HPA 849.7 847.7 851.4 844.8 844.7 843.0 841.6 843.8 845.0 852.6 853.2 850.5 853.2 DAY 26 7 9 24 15 4 8 29 23 15 22 28 MIN. QFE PRESSURE IN HPA 835.0 830.0 839.1 833.8 834.0 832.4 834.5 835.1 837.9 839.9 840.0 836.5 830.0 DAY 17 15 24 1 12 26 29 7 4 31 1 24 MEAN QNH PRESSURE IN HPA 1018.5 1015.7 1019.8 1015.3 1016.7 1013.8 1013.6 1014.8 1016.6 1021.8 1022.1 1019.7 1017.4 MAX. QNH PRESSURE IN HPA 1026.8 1024.5 1028.8 1021.1 1021.0 1019.0 1017.4 1020.0 1021.4 1030.2 1030.9 1027.8 1030.9 DAY 26 7 9 24 15 4 8 29 23 15 22 28 MIN. QNH PRESSURE IN HPA 1009.7 1003.9 1014.5 1008.3 1008.5 1006.7 1009.1 1009.8 1013.1 1015.4 1015.5 1011.4 1003.9 DAY 17 15 24 1 12 26 29 7 4 31 1 24 MEAN QFF PRESSURE IN HPA 1025.0 1020.8 1020.6 1011.0 1008.7 1002.0 1001.1 1002.9 1006.0 1016.3 1019.7 1022.3 1013.0 MAX. QFF PRESSURE IN HPA 1037.4 1032.5 1035.2 1018.0 1015.4 1009.2 1007.6 1011.7 1012.2 1029.7 1030.2 1038.8 1038.8 DAY 19 7 16 3 15 7 31 29 27 15 14 28 MIN. QFF PRESSURE IN HPA 1013.2 1006.2 1012.1 1002.9 1002.7 993.6 994.2 995.0 1001.2 1009.7 1009.6 1014.7 993.6 DAY 4 15 24 15 11 26 27 7 4 31 9 17 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 842.4 839.9 843.6 840.0 841.1 838.8 838.6 839.7 841.2 845.3 845.5 843.5 841.6 MAX. QFE PRESSURE IN HPA 849.3 848.0 851.2 845.2 845.2 843.2 842.1 843.6 844.9 852.3 852.9 850.1 852.9 DAY 26 7 9 23 15 7 8 29 23 15 22 28 MIN. QFE PRESSURE IN HPA 834.5 830.4 838.5 833.8 833.6 833.1 834.6 835.7 837.7 839.3 840.1 835.4 830.4 DAY 17 15 31 1 12 26 29 6 4 31 1 24 MEAN QNH PRESSURE IN HPA 1018.3 1015.4 1019.7 1015.5 1016.8 1014.1 1013.9 1015.1 1016.9 1021.7 1021.9 1019.7 1017.4 MAX. QNH PRESSURE IN HPA 1026.4 1024.9 1028.6 1021.6 1021.6 1019.3 1018.0 1019.7 1021.2 1029.9 1030.6 1027.3 1030.6 DAY 26 7 9 23 15 7 8 29 23 15 22 28 MIN. QNH PRESSURE IN HPA 1009.1 1004.3 1013.8 1008.3 1008.1 1007.5 1009.2 1010.5 1012.9 1014.7 1015.7 1010.2 1004.3 DAY 17 15 31 1 12 26 29 6 4 31 1 24 MEAN QFF PRESSURE IN HPA 1024.0 1019.8 1019.9 1010.8 1008.5 1002.3 1000.9 1002.5 1005.6 1015.5 1018.2 1021.0 1012.4 MAX. QFF PRESSURE IN HPA 1035.1 1032.6 1035.1 1017.4 1015.8 1009.6 1008.2 1010.5 1011.1 1029.6 1028.8 1037.9 1037.9 DAY 19 7 16 2 14 7 31 29 27 15 13 27 MIN. QFF PRESSURE IN HPA 1012.4 1006.4 1010.1 1001.9 1001.9 993.3 993.1 994.5 1001.0 1008.2 1008.8 1012.5 993.1 DAY 17 15 31 28 11 26 27 6 4 13 9 17 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -2.2 -2.3 4.0 12.2 15.2 20.2 23.5 22.8 18.3 13.0 6.9 -2.0 10.8 MINIMUN AIR TEMPERATURE (C) -6.6 -6.6 -0.3 6.1 8.0 12.3 15.8 14.6 9.9 6.9 1.1 -6.2 4.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 22 18 4 0 0 0 0 0 0 0 2 19 65 DAYS WITH FREEZING MIN.<= 0 31 26 16 0 0 0 0 0 0 0 10 24 107 TEMPERATURE RECORDS LOWEST(C) -14.6 -14.6 -11.4 1.4 2.0 7.8 10.4 10.4 3.4 3.4 -4.8 -14.6 -14.6 DAY 16 15 11 12 6 4 12 27 28 25 27 19 MAXIMUM AIR TEMPERATURE (C) 2.7 2.9 8.8 19.2 22.4 28.4 31.3 31.3 27.1 20.4 14.0 2.8 17.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 11 21 21 7 0 0 0 60 DAYS WITH MAXIMUM TEMP. <= 0 5 11 2 0 0 0 0 0 0 0 0 10 28 TEMPERATURE RECORDS HIGHEST(C) 7.2 11.3 20.6 25.4 27.3 33.4 37.0 36.2 34.6 24.2 20.8 10.6 37.0 DAY 31 25 30 25 29 30 6 4 1 9 1 4 DIF. BETWEEN (MAX.-MIN.) (C) 9.3 9.5 9.1 13.1 14.4 16.1 15.5 16.7 17.2 13.5 12.9 9.0 13.0 MEAN DAILY TEMP. (MDT) (C) -2.0 -1.9 4.2 12.6 15.2 20.4 23.6 23.0 18.5 13.7 7.5 -1.7 11.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 22.6 89.2 67.7 14.2 0.0 0.0 0.0 193.7 HEATING DEG. DAYS(BASE 18 0C) 618.5 555.9 426.3 161.0 90.0 8.2 1.6 0.0 34.7 134.1 313.5 610.6 2954.3 DEWPOINT (MEAN C) -6.2 -7.4 -1.4 1.5 1.7 5.5 7.5 7.9 3.4 3.8 -1.6 -6.0 0.7 MIXING RATIO (G/KG) 2.97 2.80 4.27 5.22 5.30 6.92 8.00 8.16 6.11 6.13 4.14 3.10 5.26 VAPOUR PRESSURE (HPA) 4.00 3.77 5.73 7.01 7.09 9.24 10.63 10.86 8.20 8.25 5.59 4.17 7.04 SATURATION DEF. (HPA) 1.34 1.72 2.94 8.02 11.18 15.73 19.84 18.58 14.56 7.32 4.96 1.46 8.97 RELATIVE HUMIDITY (MEAN %) 76 70 71 52 45 42 40 43 43 58 58 76 56 RELATIVE HUMIDITY (MAX. %) 88 86 88 76 66 63 60 66 66 81 76 88 75 RELATIVE HUMIDITY (MIN. %) 60 52 53 31 28 24 24 23 23 33 36 59 37 RELATIVE HUMIDITY (MEAN% 03UTC) 83 81 84 70 58 57 54 61 59 74 74 82 70 RELATIVE HUMIDITY (MEAN% 09UTC) 64 58 60 36 33 26 27 27 27 37 40 65 42 RELATIVE HUMIDITY (MEAN% 15UTC) 77 66 63 40 34 34 33 34 37 54 54 77 50 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 40.7 31.1 76.8 21.4 5.4 0.1 0.0 0.0 0.0 23.1 0.6 84.0 283.2 DAYS WITH PRECIPITATION >=10 1 1 3 1 0 0 0 0 0 0 0 2 8 DAYS WITH PRECIPITATION >= 5 3 3 6 1 0 0 0 0 0 2 0 4 19 DAYS WITH PRECIPITATION >= 1 6 5 10 4 2 0 0 0 0 8 0 7 42 DAYS WITH PRECIPITATION 11 11 17 14 8 2 1 0 0 10 5 15 94 GREATEST DAILY PRECIPITATION 15.2 12.1 17.0 14.5 3.4 0.1 0.0 0.0 0.0 6.0 0.5 34.2 34.2 DAY 14 27 10 4 16