Station Name: Zacatecas, Zac. WMO Station Number: 76525 National I.D. Number: Country: MEXICO WMO Region: REGION IV - NORTH & CENTRAL AMERICA Latitude: 22d 47m N Longitude: 102d 34m W Elevation: 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 ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 9.6 Feb 10.4 Mar 12.7 Apr 15.5 May 17.1 Jun 16.4 Jul 14.6 Aug 14.5 Sep 14.2 Oct 13.2 Nov 12.3 Dec 10.1 Annual 13.4 Ann-NCDC 13.4 ------------------ Element 02: Maximum Dry Bulb Temperature (deg C) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 13.6 Feb 14.8 Mar 17.4 Apr 20.3 May 21.8 Jun 20.9 Jul 18.6 Aug 18.5 Sep 17.8 Oct 17.1 Nov 16.4 Dec 13.8 Annual 17.6 Ann-NCDC 17.6 ------------------ Element 03: Minimum Dry Bulb Temperature (deg C) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 6.3 Feb 6.5 Mar 8.3 Apr 11.1 May 12.7 Jun 12.3 Jul 10.8 Aug 11.0 Sep 10.9 Oct 9.9 Nov 9.0 Dec 6.9 Annual 9.6 Ann-NCDC 9.6 ------------------ Element 06: Precipitation (mm) MEANMLY (Statistic 15): Mean Monthly Value MIN_MLY (Statistic 20): Minimum Monthly Value QUIN20% (Statistic 22): First Quintile QUIN40% (Statistic 23): Second Quintile QUIN60% (Statistic 24): Third Quintile QUIN80% (Statistic 25): Fourth Quintile MAX_MLY (Statistic 26): Maximum Monthly Value ------------------------------------------------------------------ byr: 1961 1961 1961 1961 1961 1961 1961 eyr: 1990 1990 1990 1990 1990 1990 1990 Statistic: MEANMLY MIN_MLY QUIN20% QUIN40% QUIN60% QUIN80% MAX_MLY Month ------------------------------------------------------------------ Jan 14 0.0 0.0 0.3 6.0 15.2 73.1 Feb 7 0.0 0.0 0.5 1.4 8.8 50.0 Mar 3 0.0 0.0 0.0 0.0 1.3 28.5 Apr 6 0.0 0.0 0.0 0.0 4.7 33.9 May 16 0.0 0.0 1.3 9.0 20.6 99.3 Jun 65 3.9 12.7 23.7 56.4 107.3 222.0 Jul 101 3.1 23.7 37.7 90.1 192.2 292.1 Aug 86 20.2 33.6 64.9 81.0 123.2 224.9 Sep 73 5.9 19.1 45.6 72.9 113.5 276.1 Oct 31 0.0 9.0 16.2 26.7 48.9 94.9 Nov 11 0.0 0.0 0.0 1.2 10.7 66.0 Dec 14 0.0 0.0 0.8 10.1 22.0 61.4 Annual 427 NA NA NA NA NA NA Ann-NCDC 427.0 NA NA NA NA NA NA ------------------------------------------------------------------ Element 11: Relative Humidity (%) MNDLYMX (Statistic 09): Mean Daily Maximum Value MNDLYMI (Statistic 10): Mean Daily Minimum Value -------------------------- byr: 1961 1961 eyr: 1990 1990 Statistic: MNDLYMX MNDLYMI Month -------------------------- Jan 99 11 Feb 99 9 Mar 94 7 Apr 94 9 May 97 9 Jun 99 15 Jul 100 29 Aug 99 26 Sep 97 29 Oct 100 21 Nov 99 12 Dec 100 11 Annual 98 16 Ann-NCDC 98.1 15.7 -------------------------- Element 12: Sea Level Pressure (hPa) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 1013.9 Feb 1012.5 Mar 1010.5 Apr 1009.5 May 1008.5 Jun 1008.8 Jul 1011.0 Aug 1010.3 Sep 1010.3 Oct 1011.6 Nov 1012.6 Dec 1013.8 Annual 1011.1 Ann-NCDC 1011.1 ------------------ Element 14: Vapor Pressure (hPa) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 5.9 Feb 5.2 Mar 5.0 Apr 5.8 May 7.5 Jun 10.5 Jul 11.2 Aug 11.3 Sep 11.5 Oct 9.4 Nov 6.9 Dec 6.5 Annual 8.1 Ann-NCDC 8.1 ------------------ Element 15: Sunshine MN_#HRS (Statistic 44): Mean Number of Hours ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 218.4 Feb 223.6 Mar 246.4 Apr 240.0 May 271.9 Jun 223.6 Jul 221.4 Aug 212.1 Sep 187.0 Oct 215.8 Nov 241.3 Dec 202.3 Annual 2703.8 Ann-NCDC 2703.8 ------------------ Element 16: Wind Speed (m/sec) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 7.5 Feb 7.6 Mar 8.7 Apr 6.7 May 5.9 Jun 5.2 Jul 4.9 Aug 5.2 Sep 4.7 Oct 5.5 Nov 6.2 Dec 7.0 Annual 6.3 Ann-NCDC 6.3 ------------------ Element 51: Number Days with Thunder (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 0 Feb 0 Mar 0 Apr 1 May 1 Jun 3 Jul 3 Aug 4 Sep 3 Oct 2 Nov 0 Dec 0 Annual 17 Ann-NCDC 17.0 ------------------ Element 53: Number Days with Hail (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 0 Feb 0 Mar 0 Apr 0 May 1 Jun 1 Jul 0 Aug 1 Sep 0 Oct 0 Nov 0 Dec 0 Annual 3 Ann-NCDC 3.0 ------------------ Element 76: Number Days with Air Frost (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 4 Feb 3 Mar 2 Apr 0 May 0 Jun 0 Jul 0 Aug 0 Sep 0 Oct 0 Nov 1 Dec 2 Annual 12 Ann-NCDC 12.0 ------------------ Element BJ: Number Days with Fog (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 4 Feb 3 Mar 2 Apr 2 May 2 Jun 7 Jul 12 Aug 11 Sep 13 Oct 9 Nov 4 Dec 5 Annual 74 Ann-NCDC 74.0 ------------------ Element BT: Number Days with Occurrence of Rain (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 2 Feb 1 Mar 1 Apr 1 May 3 Jun 8 Jul 10 Aug 11 Sep 9 Oct 5 Nov 1 Dec 2 Annual 54 Ann-NCDC 54.0 ------------------