Station Name: YAZD WMO Station Number: 40821 National I.D. Number: Country: IRAN, ISLAMIC REPUBLIC OF WMO Region: REGION II - ASIA Latitude: 31d 54m N Longitude: 054d 24m E Elevation: 1230 m In the following tables, byr = beginning year of normals or extremes data period eyr = ending year of normals or extremes data period NA = Not Applicable, data not submitted or not computed * = value > 0 but < units resolution Ann-NCDC = annual value computed by NCDC from monthly values provided by Members ========================================================== The normals data and climate variable descriptions are presented in these tables as provided by the WMO Member country. ========================================================== Element 01: Dry Bulb Temperature (deg C) MEAN (Statistic 01): Mean Value MEANDLY (Statistic 06): Mean Daily Value SD_DLY (Statistic 08): Standard Deviation of Mean Daily Value MNDLYMX (Statistic 09): Mean Daily Maximum Value MNDLYMI (Statistic 10): Mean Daily Minimum Value -------------------------------------------------- byr: 1961 1961 1961 1961 1961 eyr: 1990 1990 1990 1990 1990 Statistic: MEAN MEANDLY SD_DLY MNDLYMX MNDLYMI Month -------------------------------------------------- Jan 5.1 5.5 2.24 12.2 -1.2 Feb 8.0 8.2 2.11 15.1 1.3 Mar 13.5 13.4 1.75 20.3 6.4 Apr 19.5 19.0 1.51 26.1 12.0 May 25.4 24.7 1.32 32.2 17.2 Jun 30.8 29.8 0.97 37.7 21.9 Jul 32.4 31.5 1.08 39.3 23.7 Aug 30.4 29.5 1.58 37.7 21.3 Sep 26.1 25.4 1.15 34.1 16.8 Oct 19.5 19.1 1.42 27.5 10.8 Nov 12.1 12.2 1.53 20.2 4.2 Dec 6.8 7.1 1.98 14.4 -0.1 Annual 19.1 18.8 1.55 26.4 11.2 Ann-NCDC 19.1 18.8 NA 26.4 11.2 -------------------------------------------------- Element 02: Maximum Dry Bulb Temperature (deg C) MAX_VAL (Statistic 04): Maximum Value DATEMAX (Statistic 12): Date (Year/Day) of Occurrence of Maximum Daily Value -------------------------- byr: 1961 1961 eyr: 1990 1990 Statistic: MAX_VAL DATEMAX Month -------------------------- Jan 27.0 196328 Feb 28.0 196328 Mar 32.0 196814 Apr 37.0 197922 May 41.0 197031 Jun 44.0 197730 Jul 45.0 197801 Aug 45.6 198204 Sep 42.0 196105 Oct 36.0 196906 Nov 30.0 198113 Dec 27.4 198720 Annual 45.6 NA Ann-NCDC NA NA -------------------------- Element 03: Minimum Dry Bulb Temperature (deg C) MIN_VAL (Statistic 05): Minimum Value DATEMIN (Statistic 14): Date (Year/Day) of Occurrence of Minimum Daily Value -------------------------- byr: 1961 1961 eyr: 1990 1990 Statistic: MIN_VAL DATEMIN Month -------------------------- Jan -14.0 196421 Feb -10.0 198220 Mar -7.0 197905 Apr 0.0 196702 May 5.6 198902 Jun 11.0 196212 Jul 16.0 196222 Aug 12.0 197621 Sep 2.0 196229 Oct -3.0 196131 Nov -10.0 196227 Dec -16.0 196328 Annual -16.0 NA Ann-NCDC NA NA -------------------------- Element 05: Dew Point Temperature (deg C) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan -5.1 Feb -4.5 Mar -2.9 Apr 0.6 May 2.2 Jun 2.3 Jul 3.1 Aug 1.6 Sep -0.6 Oct -1.5 Nov -3.3 Dec -5.2 Annual -1.1 Ann-NCDC -1.1 ------------------ Element 06: Precipitation (mm) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 10.3 Feb 11.2 Mar 12.9 Apr 9.1 May 4.0 Jun 0.1 Jul 0.1 Aug 0.0 Sep 0.1 Oct 1.4 Nov 2.7 Dec 8.1 Annual 60.0 Ann-NCDC 60.0 ------------------ Element 08: Maximum 24-Hour Precipitation (mm) MAX_VAL (Statistic 04): Maximum Value DATEMAX (Statistic 12): Date (Year/Day) of Occurrence of Maximum Daily Value -------------------------- byr: 1961 1961 eyr: 1990 1990 Statistic: MAX_VAL DATEMAX Month -------------------------- Jan 17.0 198024 Feb 37.0 197825 Mar 30.0 198626 Apr 14.2 197703 May 19.0 196301 Jun 2.0 196106 Jul 2.0 198727 Aug 0.4 198631 Sep 3.0 196104 Oct 15.5 198214 Nov 11.0 198213 Dec 48.0 197921 Annual 48.0 NA Ann-NCDC NA NA -------------------------- Element 11: Relative Humidity (%) MEAN (Statistic 01): Mean Value MNDLYMX (Statistic 09): Mean Daily Maximum Value MNDLYMI (Statistic 10): Mean Daily Minimum Value ---------------------------------- byr: 1961 1961 1961 eyr: 1990 1990 1990 Statistic: MEAN MNDLYMX MNDLYMI Month ---------------------------------- Jan 53.0 72.0 34.0 Feb 46.0 68.0 28.0 Mar 37.0 58.0 22.0 Apr 33.0 51.0 20.0 May 25.0 39.0 15.0 Jun 18.0 27.0 12.0 Jul 17.0 26.0 12.0 Aug 18.0 26.0 12.0 Sep 19.0 28.0 12.0 Oct 27.0 39.0 17.0 Nov 38.0 54.0 24.0 Dec 47.0 66.0 30.0 Annual 31.0 46.0 20.0 Ann-NCDC 31.5 46.2 19.8 ---------------------------------- Element 12: Sea Level Pressure (hPa) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 1020.3 Feb 1017.1 Mar 1012.7 Apr 1008.8 May 1005.6 Jun 998.8 Jul 996.4 Aug 999.4 Sep 1006.0 Oct 1014.2 Nov 1019.3 Dec 1020.8 Annual 1009.9 Ann-NCDC 1009.9 ------------------ Element 13: Station Pressure (hPa) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 879.6 Feb 878.1 Mar 876.8 Apr 876.0 May 875.5 Jun 871.8 Jul 870.4 Aug 872.3 Sep 876.4 Oct 880.6 Nov 881.8 Dec 880.6 Annual 876.7 Ann-NCDC 876.7 ------------------ Element 14: Vapor Pressure (hPa) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 4.41 Feb 4.66 Mar 5.31 Apr 6.84 May 7.58 Jun 7.60 Jul 8.10 Aug 7.34 Sep 6.18 Oct 5.77 Nov 5.15 Dec 4.43 Annual 6.11 Ann-NCDC 6.1 ------------------ Element 15: Sunshine MN_#HRS (Statistic 44): Mean Number of Hours ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 181.6 Feb 203.0 Mar 207.5 Apr 230.9 May 293.9 Jun 334.1 Jul 340.7 Aug 335.0 Sep 313.1 Oct 278.1 Nov 217.8 Dec 193.4 Annual 3129.1 Ann-NCDC 3129.1 ------------------ Element 16: Wind Speed (m/sec) MEAN (Statistic 01): Mean Value MAXGUST (Statistic 30): Maximum Gust VECTOR (Statistic 42): Vector ---------------------------------- byr: 1961 1961 1961 eyr: 1990 1990 1990 Statistic: MEAN MAXGUST VECTOR Month ---------------------------------- Jan 4.4 29.9 .3 Feb 5.1 33.5 .8 Mar 6.0 20.6 1.1 Apr 6.6 25.7 1.2 May 6.6 25.2 1.8 Jun 6.1 20.6 1.3 Jul 6.4 15.4 1.1 Aug 5.7 15.4 1.1 Sep 4.4 15.4 .9 Oct 3.8 23.2 .7 Nov 3.3 18.0 .3 Dec 3.9 20.1 .3 Annual 5.2 33.5 .8 Ann-NCDC 5.2 NA NA ---------------------------------- Element 17: Wind Direction (degrees) MAXGUST (Statistic 30): Maximum Gust PREVAIL (Statistic 41): Prevailing VECTOR (Statistic 42): Vector ---------------------------------- byr: 1961 1961 1961 eyr: 1990 1990 1990 Statistic: MAXGUST PREVAIL VECTOR Month ---------------------------------- Jan 310.0 135.0 237.0 Feb 180.0 270.0 268.0 Mar 230.0 270.0 272.0 Apr 270.0 315.0 277.0 May 330.0 315.0 300.0 Jun 310.0 315.0 304.0 Jul 310.0 315.0 309.0 Aug 310.0 315.0 300.0 Sep 270.0 315.0 292.0 Oct 290.0 315.0 280.0 Nov 330.0 135.0 248.0 Dec 190.0 135.0 201.0 Annual 180.0 315.0 287.0 Ann-NCDC NA NA NA ---------------------------------- Element 17: Wind Direction (degrees) Qualifier: 41: Prevailing MEAN% (Statistic 57): Mean Percent ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 15.0 Feb 14.5 Mar 16.4 Apr 16.6 May 23.3 Jun 20.9 Jul 19.6 Aug 20.2 Sep 16.9 Oct 13.0 Nov 11.6 Dec 15.9 Annual 16.0 Ann-NCDC NA ------------------ Element 18: Wind Steadiness (unitless) MEAN% (Statistic 57): Mean Percent ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 13.6 Feb 31.4 Mar 35.0 Apr 36.4 May 51.5 Jun 41.0 Jul 34.4 Aug 36.8 Sep 38.6 Oct 34.2 Nov 15.2 Dec 15.4 Annual 30.8 Ann-NCDC NA ------------------ Element 48: Calm Winds MEAN% (Statistic 57): Mean Percent ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 47.6 Feb 44.5 Mar 38.7 Apr 35.2 May 33.6 Jun 34.8 Jul 32.7 Aug 36.9 Sep 46.9 Oct 52.0 Nov 55.6 Dec 51.4 Annual 42.5 Ann-NCDC NA ------------------ Element 51: Number Days with Thunder (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 0.0 Feb 0.0 Mar 0.3 Apr 0.6 May 0.9 Jun 0.1 Jul 0.1 Aug 0.0 Sep 0.1 Oct 0.1 Nov 0.0 Dec 0.0 Annual 2.2 Ann-NCDC 2.2 ------------------ Element 56: Number Days with Snowfall (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 1.7 Feb 0.9 Mar 0.4 Apr 0.0 May 0.0 Jun 0.0 Jul 0.0 Aug 0.0 Sep 0.0 Oct 0.0 Nov 0.0 Dec 1.1 Annual 4.1 Ann-NCDC 4.1 ------------------ Element 62: Number Days with Dust (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 2.5 Feb 4.7 Mar 8.0 Apr 10.8 May 12.0 Jun 10.3 Jul 9.5 Aug 6.6 Sep 4.5 Oct 4.6 Nov 2.1 Dec 2.5 Annual 78.1 Ann-NCDC 78.1 ------------------ Element 85: Number Days Minimum Temperature LE Threshold (count) Qualifier: 0.0 deg C MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 21.4 Feb 11.8 Mar 2.4 Apr 0.1 May 0.0 Jun 0.0 Jul 0.0 Aug 0.0 Sep 0.0 Oct 0.1 Nov 5.4 Dec 18.1 Annual 59.3 Ann-NCDC 59.3 ------------------ Element 95: Number Days with Precipitation GE Threshold (count) Statistic 15: Mean Monthly Value Qualifier: 1.0 mm Qualifier: 5.0 mm Qualifier: 10.0 mm ---------------------------------- byr: 1961 1961 1961 eyr: 1990 1990 1990 Qualifier: 1.0 5.0 10.0 Month ---------------------------------- Jan 2.4 0.7 0.2 Feb 2.0 0.7 0.3 Mar 2.6 0.8 0.3 Apr 2.3 0.8 0.1 May 1.0 0.2 0.1 Jun 0.0 0.0 0.0 Jul 0.0 0.0 0.0 Aug 0.0 0.0 0.0 Sep 0.0 0.0 0.0 Oct 0.4 0.1 0.0 Nov 1.0 0.2 0.0 Dec 1.6 0.5 0.1 Annual 13.3 4.0 1.1 Ann-NCDC 13.3 4.0 1.1 ---------------------------------- Element BT: Number Days with Occurrence of Rain (count) Statistic 15: Mean Monthly Value Qualifier: ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 3.9 Feb 3.7 Mar 4.5 Apr 4.0 May 2.0 Jun 0.1 Jul 0.1 Aug 0.0 Sep 0.0 Oct 0.8 Nov 1.7 Dec 3.0 Annual 23.8 Ann-NCDC 23.8 ------------------