Station Name: Praha 6, Ruzyne WMO Station Number: 11518 National I.D. Number: Country: CZECH REPUBLIC WMO Region: REGION VI - EUROPE Latitude: 50d 06m N Longitude: 014d 17m E Elevation: 364 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 ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan -2.0 Feb -0.6 Mar 3.1 Apr 7.6 May 12.5 Jun 15.6 Jul 17.1 Aug 16.6 Sep 13.2 Oct 8.3 Nov 3.0 Dec -0.2 Annual 7.8 Ann-NCDC 7.9 ------------------ Element 02: Maximum Dry Bulb Temperature (deg C) MEAN (Statistic 01): Mean Value MAX_VAL (Statistic 04): Maximum Value MNMLYMX (Statistic 18): Mean Monthly Maximum Value ---------------------------------- byr: 1961 1961 1961 eyr: 1990 1990 1990 Statistic: MEAN MAX_VAL MNMLYMX Month ---------------------------------- Jan 0.4 12.1 7.9 Feb 2.7 18.1 9.8 Mar 7.7 24.1 17.3 Apr 13.2 29.7 22.7 May 18.3 33.0 26.4 Jun 21.4 33.2 29.6 Jul 23.3 36.3 31.5 Aug 23.0 35.2 30.9 Sep 19.0 32.6 27.2 Oct 13.1 25.1 21.4 Nov 6.0 19.0 14.0 Dec 1.9 17.8 10.3 Annual 12.5 36.3 32.6 Ann-NCDC 12.5 NA 20.7 ---------------------------------- Element 03: Minimum Dry Bulb Temperature (deg C) MEAN (Statistic 01): Mean Value MIN_VAL (Statistic 05): Minimum Value MNMLYMI (Statistic 19): Mean Monthly Minimum Value ---------------------------------- byr: 1961 1961 1961 eyr: 1990 1990 1990 Statistic: MEAN MIN_VAL MNMLYMI Month ---------------------------------- Jan -5.3 -25.5 -14.1 Feb -4.2 -22.5 -12.3 Mar -1.3 -19.0 -7.7 Apr 2.4 -7.1 -3.2 May 7.1 -2.4 1.2 Jun 10.4 -0.6 5.0 Jul 11.8 5.0 7.5 Aug 11.5 3.4 6.6 Sep 8.6 -0.5 3.4 Oct 4.0 -5.5 -2.0 Nov -0.2 -12.4 -7.0 Dec -3.4 -23.4 -11.7 Annual 3.5 -25.5 -17.2 Ann-NCDC 3.4 NA -2.9 ---------------------------------- Element 05: Dew Point Temperature (deg C) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan -4.6 Feb -3.5 Mar -1.1 Apr 2.0 May 7.0 Jun 10.3 Jul 11.6 Aug 11.5 Sep 9.1 Oct 5.1 Nov 0.6 Dec -2.8 Annual 3.8 Ann-NCDC 3.8 ------------------ 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 23.6 7.6 14.4 20.9 23.8 31.9 58.4 Feb 22.6 3.7 14.3 19.4 24.4 29.1 62.1 Mar 28.1 11.5 20.4 23.7 29.6 37.7 59.8 Apr 38.2 9.8 20.6 29.5 39.5 58.3 81.5 May 77.2 18.1 49.2 60.7 77.0 104.8 166.4 Jun 72.7 23.1 36.8 55.9 75.9 97.9 170.5 Jul 66.2 3.5 35.6 43.6 65.0 94.4 227.4 Aug 69.6 12.3 40.2 51.0 64.4 106.8 173.2 Sep 40.4 8.8 22.1 33.5 39.4 51.8 107.8 Oct 30.5 5.7 12.2 20.7 24.3 48.6 90.0 Nov 31.9 12.8 17.4 28.9 34.9 43.9 65.4 Dec 25.3 1.9 12.0 19.4 28.9 38.5 59.9 Annual 526.2 359.3 442.1 487.5 555.9 611.2 706.3 Ann-NCDC 526.3 NA NA NA NA NA NA ------------------------------------------------------------------ Element 09: Snowfall (cm) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 17.9 Feb 15.9 Mar 10.3 Apr 2.9 May 0.0 Jun 0.0 Jul 0.0 Aug 0.0 Sep 0.0 Oct 0.1 Nov 8.4 Dec 45.9 Annual 101.3 Ann-NCDC 101.4 ------------------ Element 11: Relative Humidity (%) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 85 Feb 82 Mar 76 Apr 70 May 70 Jun 71 Jul 70 Aug 72 Sep 77 Oct 81 Nov 85 Dec 85 Annual 77 Ann-NCDC 77.0 ------------------ Element 12: Sea Level Pressure (hPa) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 1019.0 Feb 1017.6 Mar 1016.3 Apr 1014.1 May 1015.1 Jun 1015.5 Jul 1016.3 Aug 1016.2 Sep 1018.2 Oct 1019.2 Nov 1017.5 Dec 1018.0 Annual 1016.9 Ann-NCDC 1016.9 ------------------ Element 14: Vapor Pressure (hPa) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 4.7 Feb 5.0 Mar 5.9 Apr 7.3 May 10.3 Jun 12.8 Jul 13.8 Aug 13.8 Sep 11.8 Oct 9.0 Nov 6.6 Dec 5.3 Annual 8.9 Ann-NCDC 8.9 ------------------ Element 15: Sunshine MN_#HRS (Statistic 44): Mean Number of Hours ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 50.0 Feb 72.4 Mar 124.7 Apr 167.6 May 214.0 Jun 218.3 Jul 226.2 Aug 212.3 Sep 161.0 Oct 120.8 Nov 53.9 Dec 46.7 Annual 1667.9 Ann-NCDC 1667.9 ------------------ Element 16: Wind Speed (m/sec) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 4.8 Feb 4.7 Mar 5.0 Apr 4.7 May 4.4 Jun 4.4 Jul 4.3 Aug 4.0 Sep 4.2 Oct 4.2 Nov 4.8 Dec 4.9 Annual 4.5 Ann-NCDC 4.5 ------------------ Element 17: Wind Direction (degrees) Statistic 38: Frequency Qualifier: 000.0 degrees Qualifier: 022.5 degrees Qualifier: 045.0 degrees Qualifier: 067.5 degrees Qualifier: 090.0 degrees Qualifier: 112.5 degrees Qualifier: 135.0 degrees Qualifier: 157.5 degrees Qualifier: 180.0 degrees ---------------------------------------------------------------------------------- byr: 1961 1961 1961 1961 1961 1961 1961 1961 1961 eyr: 1990 1990 1990 1990 1990 1990 1990 1990 1990 Qualifier: 000.0 022.5 045.0 067.5 090.0 112.5 135.0 157.5 180.0 Month ---------------------------------------------------------------------------------- Jan .029 .025 .024 .021 .033 .041 .068 .063 .081 Feb .022 .040 .032 .023 .062 .050 .066 .046 .059 Mar .018 .039 .039 .030 .069 .054 .060 .041 .041 Apr .011 .049 .035 .028 .062 .050 .058 .032 .043 May .011 .046 .046 .038 .081 .068 .061 .039 .038 Jun .013 .047 .038 .031 .050 .039 .044 .027 .041 Jul .014 .041 .028 .024 .048 .032 .038 .027 .036 Aug .024 .041 .032 .031 .062 .042 .042 .035 .040 Sep .022 .031 .027 .020 .055 .046 .057 .043 .057 Oct .025 .033 .035 .024 .067 .052 .062 .060 .059 Nov .021 .025 .024 .022 .045 .041 .059 .056 .070 Dec .025 .022 .021 .021 .042 .042 .065 .048 .057 Annual .019 .037 .032 .026 .056 .046 .057 .043 .052 Ann-NCDC NA NA NA NA NA NA NA NA NA ---------------------------------------------------------------------------------- Element 17: Wind Direction (degrees) Statistic 38: Frequency Qualifier: 202.5 degrees Qualifier: 225.0 degrees Qualifier: 247.5 degrees Qualifier: 270.0 degrees Qualifier: 292.5 degrees Qualifier: 315.0 degrees Qualifier: 337.5 degrees Qualifier: 360.0 degrees -------------------------------------------------------------------------- byr: 1961 1961 1961 1961 1961 1961 1961 1961 eyr: 1990 1990 1990 1990 1990 1990 1990 1990 Qualifier: 202.5 225.0 247.5 270.0 292.5 315.0 337.5 360.0 Month -------------------------------------------------------------------------- Jan .056 .149 .150 .071 .038 .048 .044 .060 Feb .044 .126 .109 .074 .043 .059 .063 .083 Mar .047 .128 .124 .083 .044 .061 .051 .071 Apr .041 .101 .087 .068 .051 .082 .086 .116 May .033 .084 .087 .076 .042 .072 .084 .096 Jun .037 .104 .094 .092 .060 .073 .099 .111 Jul .040 .122 .120 .100 .066 .093 .081 .090 Aug .049 .124 .120 .087 .058 .075 .064 .077 Sep .054 .139 .124 .084 .060 .057 .059 .066 Oct .064 .152 .123 .058 .038 .040 .046 .062 Nov .064 .168 .148 .071 .039 .051 .043 .053 Dec .065 .188 .157 .079 .037 .044 .041 .047 Annual .049 .132 .120 .079 .048 .063 .063 .077 Ann-NCDC NA NA NA NA NA NA NA NA -------------------------------------------------------------------------- Element 17: Wind Direction (degrees) PREVAIL (Statistic 41): Prevailing ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 270.0 Feb 225.0 Mar 225.0 Apr 360.0 May 360.0 Jun 360.0 Jul 225.0 Aug 225.0 Sep 225.0 Oct 225.0 Nov 225.0 Dec 225.0 Annual 225.0 Ann-NCDC NA ------------------ Element 20: Sky Cover (Cloud Cover) (okta) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 6.1 Feb 5.8 Mar 5.4 Apr 5.0 May 4.9 Jun 4.9 Jul 4.7 Aug 4.5 Sep 4.8 Oct 4.9 Nov 6.1 Dec 6.1 Annual 5.3 Ann-NCDC 5.3 ------------------ Element 51: Number Days with Thunder (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 0.2 Feb 0.2 Mar 0.5 Apr 2.2 May 6.4 Jun 8.5 Jul 7.2 Aug 6.8 Sep 2.3 Oct 0.2 Nov 0.0 Dec 0.0 Annual 34.4 Ann-NCDC 34.5 ------------------ Element 53: Number Days with Hail (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 0.0 Feb 0.0 Mar 0.0 Apr 0.5 May 0.6 Jun 0.4 Jul 0.4 Aug 0.4 Sep 0.1 Oct 0.0 Nov 0.0 Dec 0.0 Annual 2.5 Ann-NCDC 2.4 ------------------ Element 82: Number Days with Gale Force Winds (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 0.9 Feb 0.8 Mar 0.3 Apr 0.1 May 0.3 Jun 0.0 Jul 0.0 Aug 0.0 Sep 0.1 Oct 0.2 Nov 0.6 Dec 0.6 Annual 4.0 Ann-NCDC 3.9 ------------------ 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 7.1 Feb 5.9 Mar 6.6 Apr 7.7 May 10.0 Jun 10.4 Jul 9.4 Aug 9.0 Sep 7.3 Oct 5.6 Nov 7.4 Dec 7.2 Annual 93.5 Ann-NCDC 93.6 ------------------ Element BJ: Number Days with Fog (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 7.8 Feb 6.7 Mar 4.6 Apr 2.8 May 1.8 Jun 1.8 Jul 0.9 Aug 2.3 Sep 5.0 Oct 8.9 Nov 8.3 Dec 7.2 Annual 58.0 Ann-NCDC 58.1 ------------------