Station Name: RIGA WMO Station Number: 26422 National I.D. Number: Country: LATVIA WMO Region: REGION VI - EUROPE Latitude: 56d 58m N Longitude: 024d 03m E Elevation: 2 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 MAX_VAL (Statistic 04): Maximum Value MIN_VAL (Statistic 05): Minimum 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 MAX_VAL MIN_VAL MNDLYMX MNDLYMI Month -------------------------------------------------- Jan -4.7 9.0 -33.7 -2.2 -7.5 Feb -4.2 13.5 -28.2 -1.5 -7.3 Mar -.5 20.5 -22.8 3.1 -3.9 Apr 5.1 24.2 -11.1 9.8 1.0 May 11.4 29.1 -5.1 16.6 6.4 Jun 15.5 32.5 -1.2 20.3 10.4 Jul 16.9 32.5 4.0 21.5 12.3 Aug 16.2 31.8 0.0 20.8 11.9 Sep 12.0 29.3 -2.8 16.2 8.2 Oct 7.4 23.4 -8.7 10.6 4.2 Nov 2.1 17.2 -17.1 4.2 -0.2 Dec -2.3 10.8 -31.9 0.0 -4.8 Annual 6.2 32.5 -33.7 10.0 2.6 Ann-NCDC 6.2 NA NA 9.9 2.6 -------------------------------------------------- Element 06: Precipitation (mm) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 33.0 Feb 25.0 Mar 31.0 Apr 39.0 May 43.0 Jun 61.0 Jul 79.0 Aug 79.0 Sep 76.0 Oct 60.0 Nov 61.0 Dec 49.0 Annual 636.0 Ann-NCDC 636.0 ------------------ Element 12: Sea Level Pressure (hPa) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 1014.7 Feb 1016.2 Mar 1014.8 Apr 1013.7 May 1015.8 Jun 1013.4 Jul 1012.5 Aug 1013.4 Sep 1013.6 Oct 1015.5 Nov 1012.2 Dec 1011.9 Annual 1014.0 Ann-NCDC 1014.0 ------------------ Element 14: Vapor Pressure (hPa) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 4.1 Feb 4.0 Mar 4.8 Apr 6.4 May 9.3 Jun 12.0 Jul 14.0 Aug 14.0 Sep 11.0 Oct 8.7 Nov 6.4 Dec 4.8 Annual 8.4 Ann-NCDC 8.3 ------------------ Element 15: Sunshine MN_#HRS (Statistic 44): Mean Number of Hours ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 31.0 Feb 63.0 Mar 126.0 Apr 182.0 May 264.0 Jun 287.0 Jul 264.0 Aug 230.0 Sep 154.0 Oct 93.0 Nov 39.0 Dec 24.0 Annual 1757.0 Ann-NCDC 1757.0 ------------------ Element 16: Wind Speed (m/sec) MEAN (Statistic 01): Mean Value ------------------ byr: 1974 eyr: 1990 Month ------------------ Jan 4.9 Feb 4.4 Mar 4.5 Apr 4.2 May 3.9 Jun 3.8 Jul 3.7 Aug 3.7 Sep 4.2 Oct 4.7 Nov 5.1 Dec 5.0 Annual 4.3 Ann-NCDC 4.3 ------------------ Element 95: Number Days with Precipitation GE Threshold (count) Qualifier: 1.0 mm MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 9.4 Feb 7.0 Mar 8.2 Apr 8.0 May 7.7 Jun 8.9 Jul 11.2 Aug 10.9 Sep 12.3 Oct 11.6 Nov 12.5 Dec 12.2 Annual 120.0 Ann-NCDC 119.9 ------------------