Station Name: CHEYENNE WSFO, WY WMO Station Number: 72564 National I.D. Number: 00481675 Country: UNITED STATES OF AMERICA WMO Region: REGION IV - NORTH & CENTRAL AMERICA Latitude: 41d 09m N Longitude: 104d 49m W Elevation: 1872 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 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 18.9 198226 Feb 21.7 196211 Mar 23.3 198628 Apr 27.8 198126 May 32.2 196927 Jun 35.6 199027 Jul 36.7 197306 Aug 35.6 197906 Sep 32.8 197908 Oct 28.3 196703 Nov 21.7 199025 Dec 18.9 199010 Annual NA 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 -33.9 198418 Feb -31.7 198501 Mar -23.3 196518 Apr -22.2 197501 May -7.8 198312 Jun .6 198512 Jul 3.9 196801 Aug 2.2 197525 Sep -13.3 198530 Oct -13.9 196912 Nov -25.6 198330 Dec -33.3 199022 Annual NA NA Ann-NCDC NA NA -------------------------- Element 04: Wet Bulb Temperature (deg C) SD3HRLY (Statistic 60): Standard Deviation of 3-Hourly Values MN3HRLY (Statistic 94): Mean of 3-Hourly Observations #_YEARS (Statistic 98): Number of Years used to Calculate Normal ---------------------------------- byr: 1961 1961 1961 eyr: 1990 1990 1990 Statistic: SD3HRLY MN3HRLY #_YEARS Month ---------------------------------- Jan 6.1 -5.9 30 Feb 5.6 -4.7 30 Mar 4.9 -2.6 30 Apr 4.3 1.4 30 May 3.8 5.9 30 Jun 3.4 10.3 30 Jul 2.6 13.1 30 Aug 2.9 12.1 30 Sep 4.1 7.8 30 Oct 4.1 2.8 30 Nov 4.7 -2.1 30 Dec 5.9 -5.4 30 Annual 8.1 2.7 30 Ann-NCDC NA 2.7 NA ---------------------------------- Element 05: Dew Point Temperature (deg C) SD3HRLY (Statistic 60): Standard Deviation of 3-Hourly Values MN3HRLY (Statistic 94): Mean of 3-Hourly Observations #_YEARS (Statistic 98): Number of Years used to Calculate Normal ---------------------------------- byr: 1961 1961 1961 eyr: 1990 1990 1990 Statistic: SD3HRLY MN3HRLY #_YEARS Month ---------------------------------- Jan 6.1 -12.3 30 Feb 5.3 -10.7 30 Mar 4.7 -8.3 30 Apr 4.6 -4.4 30 May 4.7 .7 30 Jun 4.4 5.2 30 Jul 4.1 7.9 30 Aug 4.5 6.9 30 Sep 5.0 2.1 30 Oct 4.4 -3.6 30 Nov 4.4 -8.1 30 Dec 5.7 -11.6 30 Annual 8.6 -3.0 30 Ann-NCDC NA -3.0 NA ---------------------------------- Element 09: Snowfall (cm) MEDIAN (Statistic 02): Median Value MAX_DLY (Statistic 11): Maximum Daily Value DATEMAX (Statistic 12): Date (Year/Day) of Occurrence of Maximum Daily Value MEANMLY (Statistic 15): Mean Monthly Value QUAR25% (Statistic 58): First Quartile QUAR75% (Statistic 59): Third Quartile #_YEARS (Statistic 98): Number of Years used to Calculate Normal ------------------------------------------------------------------ byr: 1961 1961 1961 1961 1961 1961 1961 eyr: 1990 1990 1990 1990 1990 1990 1990 Statistic: MEDIAN MAX_DLY DATEMAX MEANMLY QUAR25% QUAR75% #_YEARS Month ------------------------------------------------------------------ Jan 14.0 30.5 198025 15.2 3.3 20.1 30 Feb 10.4 17.5 198902 13.7 5.6 21.6 30 Mar 28.4 29.2 197918 31.5 12.7 41.4 30 Apr 15.5 43.9 198420 20.1 8.1 21.6 30 May 2.0 28.2 197806 7.6 Trace 9.7 30 Jun .0 Trace 197909 Trace .0 .0 30 Jul .0 .0 199031 .0 .0 .0 30 Aug .0 .0 199031 .0 .0 .0 30 Sep Trace 12.4 198528 2.0 .0 1.5 30 Oct 6.9 20.1 199007 10.4 1.0 14.0 30 Nov 11.2 50.3 197920 16.3 5.1 20.1 30 Dec 14.2 29.5 197927 16.5 5.6 21.3 30 Annual NA NA NA 133.3 NA NA NA Ann-NCDC NA NA NA NA NA NA NA ------------------------------------------------------------------ Element 11: Relative Humidity (%) MN02LST (Statistic 72): Mean of Observations at 0200 LST MN05LST (Statistic 75): Mean of Observations at 0500 LST MN08LST (Statistic 78): Mean of Observations at 0800 LST MN11LST (Statistic 81): Mean of Observations at 1100 LST MN14LST (Statistic 84): Mean of Observations at 1400 LST MN17LST (Statistic 87): Mean of Observations at 1700 LST MN20LST (Statistic 90): Mean of Observations at 2000 LST MN23LST (Statistic 93): Mean of Observations at 2300 LST MN3HRLY (Statistic 94): Mean of 3-Hourly Observations ---------------------------------------------------------------------------------- byr: 1961 1961 1961 1961 1961 1961 1961 1961 1961 eyr: 1990 1990 1990 1990 1990 1990 1990 1990 1990 Statistic: MN02LST MN05LST MN08LST MN11LST MN14LST MN17LST MN20LST MN23LST MN3HRLY Month ---------------------------------------------------------------------------------- Jan 57.1 56.7 55.9 45.4 42.4 49.4 55.9 57.5 52.5 Feb 61.6 60.9 58.1 45.7 42.4 47.9 58.9 61.2 54.6 Mar 65.2 65.2 58.6 46.5 43.2 46.9 59.3 63.8 56.1 Apr 67.2 67.9 55.4 42.8 38.5 41.8 56.3 64.8 54.3 May 70.5 71.4 53.9 42.2 40.5 43.7 57.6 66.9 55.8 Jun 69.3 71.2 51.9 39.7 37.6 41.0 53.9 63.8 53.5 Jul 68.2 69.9 49.9 35.7 33.4 38.2 51.9 62.8 51.3 Aug 68.0 69.3 51.3 36.0 33.0 38.2 52.7 62.7 51.4 Sep 65.9 66.7 53.5 37.7 33.6 38.4 54.2 62.4 51.5 Oct 60.2 60.8 52.7 38.2 34.3 40.6 54.4 59.0 50.0 Nov 60.3 60.2 57.1 43.3 39.8 49.8 58.0 59.9 53.6 Dec 58.4 58.3 57.3 46.0 43.3 52.3 57.6 58.6 54.0 Annual 64.3 64.9 54.6 41.6 38.5 44.0 55.9 62.0 53.2 Ann-NCDC 64.3 64.9 54.6 41.6 38.5 44.0 55.9 61.9 53.2 ---------------------------------------------------------------------------------- Element 11: Relative Humidity (%) Statistic 98: Number of Years used to Calculate Normal Qualifier: 72: Mean of Observations at 0200 LST Qualifier: 75: Mean of Observations at 0500 LST Qualifier: 78: Mean of Observations at 0800 LST Qualifier: 81: Mean of Observations at 1100 LST Qualifier: 84: Mean of Observations at 1400 LST Qualifier: 87: Mean of Observations at 1700 LST Qualifier: 90: Mean of Observations at 2000 LST Qualifier: 93: Mean of Observations at 2300 LST Qualifier: 94: Mean of 3-Hourly Observations ---------------------------------------------------------------------------------- byr: 1961 1961 1961 1961 1961 1961 1961 1961 1961 eyr: 1990 1990 1990 1990 1990 1990 1990 1990 1990 Qualifier: 72 75 78 81 84 87 90 93 94 Month ---------------------------------------------------------------------------------- Jan 30 30 30 30 30 30 30 30 30 Feb 30 30 30 30 30 30 30 30 30 Mar 30 30 30 30 30 30 30 30 30 Apr 30 30 30 30 30 30 30 30 30 May 30 30 30 30 30 30 30 30 30 Jun 30 30 30 30 30 30 30 30 30 Jul 30 30 30 30 30 30 30 30 30 Aug 30 30 30 30 30 30 30 30 30 Sep 30 30 30 30 30 30 30 30 30 Oct 30 30 30 30 30 30 30 30 30 Nov 30 30 30 30 30 30 30 30 30 Dec 30 30 30 30 30 30 30 30 30 Annual 30 30 30 30 30 30 30 30 30 Ann-NCDC NA NA NA NA NA NA NA NA NA ---------------------------------------------------------------------------------- Element 12: Sea Level Pressure (hPa) MN3HRLY (Statistic 94): Mean of 3-Hourly Observations #_YEARS (Statistic 98): Number of Years used to Calculate Normal -------------------------- byr: 1961 1961 eyr: 1990 1990 Statistic: MN3HRLY #_YEARS Month -------------------------- Jan 1017.8 30 Feb 1017.2 30 Mar 1014.2 30 Apr 1012.8 30 May 1012.1 30 Jun 1012.4 30 Jul 1014.5 30 Aug 1014.8 30 Sep 1015.4 30 Oct 1017.1 30 Nov 1017.2 30 Dec 1017.7 30 Annual 1015.2 30 Ann-NCDC 1015.3 NA -------------------------- Element 15: Sunshine %OFPOSS (Statistic 37): Percent of Possible MN_#HRS (Statistic 44): Mean Number of Hours -------------------------- byr: 1961 1961 eyr: 1990 1990 Statistic: %OFPOSS MN_#HRS Month -------------------------- Jan 64.0 190.7 Feb 68.0 202.6 Mar 68.0 253.1 Apr 68.0 271.9 May 65.0 291.9 Jun 67.0 303.2 Jul 69.0 317.5 Aug 70.0 297.4 Sep 70.0 262.3 Oct 69.0 237.0 Nov 60.0 178.8 Dec 61.0 175.4 Annual 67.0 2981.8 Ann-NCDC NA 2981.8 -------------------------- Element 15: Sunshine Qualifier: 15: Mean Monthly Value #_YEARS (Statistic 98): Number of Years used to Calculate Normal ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 28 Feb 28 Mar 28 Apr 28 May 29 Jun 28 Jul 28 Aug 30 Sep 28 Oct 28 Nov 29 Dec 29 Annual 0 Ann-NCDC NA ------------------ Element 16: Wind Speed (m/sec) MN3HRLY (Statistic 94): Mean of 3-Hourly Observations ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 6.8 Feb 6.5 Mar 6.4 Apr 6.3 May 5.7 Jun 5.0 Jul 4.6 Aug 4.6 Sep 4.9 Oct 5.4 Nov 5.9 Dec 6.5 Annual 5.7 Ann-NCDC 5.7 ------------------ 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 .013 .024 .014 .010 .009 .008 .010 .018 .041 Feb .014 .033 .017 .014 .011 .008 .010 .019 .041 Mar .015 .039 .022 .016 .015 .016 .018 .034 .057 Apr .014 .040 .026 .023 .024 .025 .027 .052 .068 May .014 .046 .036 .028 .030 .030 .037 .072 .087 Jun .017 .043 .030 .030 .026 .032 .041 .077 .103 Jul .017 .045 .038 .029 .031 .038 .046 .071 .095 Aug .022 .034 .030 .023 .025 .030 .041 .067 .098 Sep .019 .042 .028 .020 .019 .023 .025 .059 .090 Oct .015 .039 .021 .014 .014 .011 .012 .033 .063 Nov .020 .029 .014 .009 .010 .007 .008 .019 .050 Dec .015 .027 .015 .009 .011 .009 .009 .012 .039 Annual NA NA NA NA NA NA NA NA NA 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 .057 .064 .087 .163 .245 .119 .056 .062 Feb .051 .059 .075 .143 .219 .136 .070 .079 Mar .056 .061 .062 .120 .174 .120 .085 .088 Apr .050 .047 .057 .101 .162 .117 .081 .086 May .054 .049 .056 .086 .141 .081 .073 .078 Jun .074 .060 .056 .092 .135 .067 .050 .066 Jul .073 .065 .065 .094 .131 .057 .045 .060 Aug .071 .066 .069 .111 .150 .063 .047 .052 Sep .065 .066 .070 .129 .171 .060 .048 .066 Oct .066 .060 .075 .148 .193 .093 .066 .077 Nov .065 .071 .085 .159 .211 .104 .065 .075 Dec .054 .066 .084 .172 .239 .115 .056 .067 Annual NA NA NA NA NA NA NA NA Ann-NCDC NA NA NA NA NA NA NA NA -------------------------------------------------------------------------- Element 17: Wind Direction (degrees) PREVAIL (Statistic 41): Prevailing #_YEARS (Statistic 98): Number of Years used to Calculate Normal -------------------------- byr: 1961 1961 eyr: 1990 1990 Statistic: PREVAIL #_YEARS Month -------------------------- Jan 292.5 30 Feb 292.5 30 Mar 292.5 30 Apr 292.5 30 May 292.5 30 Jun 292.5 30 Jul 292.5 30 Aug 292.5 30 Sep 292.5 30 Oct 292.5 30 Nov 292.5 30 Dec 292.5 30 Annual 292.5 NA Ann-NCDC NA NA -------------------------- Element 20: Sky Cover (Cloud Cover) (okta) MEAN (Statistic 01): Mean Value #_YEARS (Statistic 98): Number of Years used to Calculate Normal -------------------------- byr: 1961 1961 eyr: 1990 1990 Statistic: MEAN #_YEARS Month -------------------------- Jan 4.7 30 Feb 4.9 30 Mar 5.2 30 Apr 5.1 30 May 5.3 30 Jun 4.3 30 Jul 4.1 30 Aug 4.0 30 Sep 3.8 30 Oct 3.9 30 Nov 4.6 30 Dec 4.6 30 Annual 4.5 NA Ann-NCDC 4.5 NA -------------------------- Element 51: Number Days with Thunder (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan .0 Feb * Mar .2 Apr 1.8 May 7.4 Jun 10.9 Jul 12.9 Aug 10.3 Sep 4.0 Oct .8 Nov .1 Dec .0 Annual 48.4 Ann-NCDC 48.4 ------------------ Element 61: Number Days with Haze/Smoke (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan .1 Feb .0 Mar * Apr * May .0 Jun * Jul * Aug .0 Sep .2 Oct .0 Nov * Dec .1 Annual .4 Ann-NCDC 0.4 ------------------ Element 63: Number Days with Blowing Dust/Sand (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan .0 Feb .0 Mar .0 Apr * May .0 Jun .0 Jul .0 Aug * Sep * Oct .0 Nov .0 Dec .0 Annual * Ann-NCDC * ------------------ Element 83: Number Days Maximum Temperature GE Threshold (count) Statistic 15: Mean Monthly Value Qualifier: 10.0 deg C Qualifier: 35.0 deg C -------------------------- byr: 1961 1961 eyr: 1990 1990 Qualifier: 10.0 35.0 Month -------------------------- Jan 5.8 .0 Feb 7.1 .0 Mar 11.8 .0 Apr 20.2 .0 May 28.0 .0 Jun 29.6 .1 Jul 31.0 .5 Aug 31.0 .2 Sep 28.5 .0 Oct 24.8 .0 Nov 13.5 .0 Dec 6.9 .0 Annual 238.2 .8 Ann-NCDC 238.2 0.8 -------------------------- Element 85: Number Days Minimum Temperature LE Threshold (count) Statistic 15: Mean Monthly Value Qualifier: 0.0 deg C Qualifier: 10.0 deg C -------------------------- byr: 1961 1961 eyr: 1990 1990 Qualifier: 0.0 10.0 Month -------------------------- Jan 28.8 31.0 Feb 26.1 28.0 Mar 27.7 31.0 Apr 18.0 30.0 May 3.6 30.1 Jun .0 18.8 Jul .0 4.7 Aug .0 8.9 Sep 2.1 24.9 Oct 12.2 30.7 Nov 24.4 30.0 Dec 28.5 31.0 Annual 171.4 299.1 Ann-NCDC 171.4 299.1 -------------------------- 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 2.8 Feb 2.9 Mar 5.8 Apr 6.2 May 8.2 Jun 7.2 Jul 7.5 Aug 6.2 Sep 4.9 Oct 3.7 Nov 3.4 Dec 3.0 Annual 61.8 Ann-NCDC 61.8 ------------------ Element 97: Number Days with Freezing Rain/Drizzle (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan * Feb .1 Mar .1 Apr .1 May .0 Jun .0 Jul .0 Aug .0 Sep .1 Oct .1 Nov .2 Dec .1 Annual .8 Ann-NCDC 0.8 ------------------ Element 98: Number Days with Blowing Snow (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 2.6 Feb 2.0 Mar 2.8 Apr 1.6 May .2 Jun .0 Jul .0 Aug .0 Sep * Oct .7 Nov 1.8 Dec 2.3 Annual 14.0 Ann-NCDC 14.0 ------------------ Element AA: Number Days with Rain/Drizzle (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan .7 Feb 1.1 Mar 3.5 Apr 8.8 May 17.4 Jun 16.5 Jul 18.0 Aug 16.4 Sep 12.1 Oct 6.0 Nov 2.6 Dec .8 Annual 103.9 Ann-NCDC 103.9 ------------------ Element AB: Number Days with Snow/Hail (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 10.8 Feb 11.0 Mar 13.6 Apr 9.9 May 3.6 Jun .2 Jul .0 Aug .0 Sep 1.9 Oct 5.2 Nov 9.2 Dec 11.1 Annual 76.5 Ann-NCDC 76.5 ------------------ Element AC: Number Days with Fog/Mist (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 4.3 Feb 4.4 Mar 7.2 Apr 7.0 May 6.8 Jun 4.1 Jul 2.9 Aug 3.3 Sep 5.3 Oct 4.3 Nov 4.9 Dec 4.5 Annual 59.0 Ann-NCDC 59.0 ------------------ Element AD: Number Days with Weather Phenomena (count) #_YEARS (Statistic 98): Number of Years used to Calculate Normal ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 30 Feb 30 Mar 30 Apr 30 May 30 Jun 30 Jul 30 Aug 30 Sep 30 Oct 30 Nov 30 Dec 30 Annual NA Ann-NCDC NA ------------------