Station Name: CHICAGO/0'HARE, IL WMO Station Number: 72530 National I.D. Number: 00111549 Country: UNITED STATES OF AMERICA WMO Region: REGION IV - NORTH & CENTRAL AMERICA Latitude: 41d 59m N Longitude: 087d 54m W Elevation: 205 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 #_YEARS (Statistic 98): Number of Years used to Calculate Normal -------------------------- byr: 1961 1961 eyr: 1990 1990 Statistic: MEAN #_YEARS Month -------------------------- Jan -6.1 30 Feb -3.7 30 Mar 2.9 30 Apr 9.2 30 May 14.9 30 Jun 20.3 30 Jul 22.9 30 Aug 22.1 30 Sep 18.0 30 Oct 11.6 30 Nov 4.4 30 Dec -3.0 30 Annual 9.5 30 Ann-NCDC 9.5 NA -------------------------- Element 02: Maximum Dry Bulb Temperature (deg C) MEAN (Statistic 01): Mean Value MAX_VAL (Statistic 04): Maximum Value DATEMAX (Statistic 12): Date (Year/Day) of Occurrence of Maximum Daily Value #_YEARS (Statistic 98): Number of Years used to Calculate Normal ------------------------------------------ byr: 1961 1961 1961 1961 eyr: 1990 1990 1990 1990 Statistic: MEAN MAX_VAL DATEMAX #_YEARS Month ------------------------------------------ Jan -1.7 18.3 198931 30 Feb .8 21.7 197627 30 Mar 7.7 31.1 198629 30 Apr 14.8 32.8 198022 30 May 21.2 33.9 197728 30 Jun 26.4 40.0 198820 30 Jul 28.7 38.9 198815 30 Aug 27.7 37.8 198802 30 Sep 23.8 37.2 198507 30 Oct 17.4 32.8 196306 30 Nov 9.1 25.6 197805 30 Dec 1.1 21.7 198202 30 Annual 14.7 NA NA 30 Ann-NCDC 14.8 NA NA NA ------------------------------------------ Element 03: Minimum Dry Bulb Temperature (deg C) MEAN (Statistic 01): Mean Value MIN_VAL (Statistic 05): Minimum Value DATEMIN (Statistic 14): Date (Year/Day) of Occurrence of Minimum Daily Value #_YEARS (Statistic 98): Number of Years used to Calculate Normal ------------------------------------------ byr: 1961 1961 1961 1961 eyr: 1990 1990 1990 1990 Statistic: MEAN MIN_VAL DATEMIN #_YEARS Month ------------------------------------------ Jan -10.6 -32.8 198520 30 Feb -8.2 -27.2 196712 30 Mar -1.9 -22.2 196201 30 Apr 3.7 -13.9 198207 30 May 8.7 -4.4 196610 30 Jun 14.2 2.2 197211 30 Jul 17.0 4.4 196501 30 Aug 16.4 5.0 196529 30 Sep 12.2 -2.2 197423 30 Oct 5.7 -8.3 198124 30 Nov -.2 -17.2 197629 30 Dec -7.2 -31.7 198324 30 Annual 4.1 NA NA 30 Ann-NCDC 4.2 NA 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 7.4 -6.8 30 Feb 6.4 -4.6 30 Mar 5.8 .7 30 Apr 5.4 5.9 30 May 5.1 11.2 30 Jun 4.3 16.2 30 Jul 3.6 18.9 30 Aug 3.7 18.3 30 Sep 4.8 14.6 30 Oct 5.3 8.6 30 Nov 5.7 2.7 30 Dec 6.8 -3.7 30 Annual 10.4 6.8 30 Ann-NCDC NA 6.8 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 8.8 -10.2 30 Feb 7.5 -8.0 30 Mar 6.4 -2.7 30 Apr 6.1 2.1 30 May 5.8 7.6 30 Jun 4.9 13.2 30 Jul 4.0 16.5 30 Aug 4.1 16.1 30 Sep 5.3 12.1 30 Oct 5.8 5.4 30 Nov 6.4 -.2 30 Dec 7.9 -6.6 30 Annual 11.0 3.8 30 Ann-NCDC NA 3.8 NA ---------------------------------- 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 #_YEARS (Statistic 98): Number of Years used to Calculate Normal -------------------------------------------------------------------------- byr: 1961 1961 1961 1961 1961 1961 1961 1961 eyr: 1990 1990 1990 1990 1990 1990 1990 1990 Statistic: MEANMLY MIN_MLY QUIN20% QUIN40% QUIN60% QUIN80% MAX_MLY #_YEARS Month -------------------------------------------------------------------------- Jan 38.9 2.5 15.7 26.4 39.1 58.2 104.4 30 Feb 34.5 3.0 15.5 24.6 35.3 50.8 87.9 30 Mar 68.3 16.0 39.4 54.9 71.1 94.0 150.1 30 Apr 92.5 24.6 52.3 73.7 96.3 128.0 195.3 30 May 84.3 30.2 51.1 69.3 88.1 114.3 181.4 30 Jun 96.0 26.7 56.9 78.2 100.6 131.1 201.7 30 Jul 93.0 30.0 59.4 78.2 97.5 123.4 211.6 30 Aug 107.2 13.0 37.1 67.8 105.7 164.8 434.3 30 Sep 97.0 0.5 28.2 56.4 93.2 152.7 290.6 30 Oct 61.2 4.1 25.1 42.2 61.7 91.7 166.4 30 Nov 74.2 16.5 34.8 54.4 76.2 107.9 208.8 30 Dec 62.7 5.8 26.7 43.7 63.5 93.2 217.4 30 Annual 909.8 NA NA NA NA NA NA 30 Ann-NCDC 909.8 NA NA NA NA NA NA NA -------------------------------------------------------------------------- Element 08: Maximum 24-Hour Precipitation (mm) MAX_DLY (Statistic 11): Maximum Daily Value DATEMAX (Statistic 12): Date (Year/Day) of Occurrence of Maximum Daily Value #_YEARS (Statistic 98): Number of Years used to Calculate Normal ---------------------------------- byr: 1961 1961 1961 eyr: 1990 1990 1990 Statistic: MAX_DLY DATEMAX #_YEARS Month ---------------------------------- Jan 41.4 197510 30 Feb 36.8 198523 30 Mar 44.5 198504 30 Apr 59.9 197216 30 May 87.6 198129 30 Jun 78.5 196710 30 Jul 72.1 196202 30 Aug 164.8 198714 30 Sep 73.2 196113 30 Oct 107.9 196910 30 Nov 74.4 199027 30 Dec 113.5 198202 30 Annual NA NA NA Ann-NCDC NA NA 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 21.6 38.9 197913 27.2 9.4 43.7 30 Feb 20.3 24.6 198110 21.3 10.9 29.2 30 Mar 11.7 21.6 198204 16.5 5.1 22.9 30 Apr .5 27.2 197502 4.6 Trace 6.9 30 May .0 4.1 196611 .3 .0 .0 30 Jun .0 .0 199030 .0 .0 .0 30 Jul .0 .0 199031 .0 .0 .0 30 Aug .0 .0 199031 .0 .0 .0 30 Sep .0 .0 199030 .0 .0 .0 30 Oct .0 10.2 196727 1.3 .0 Trace 30 Nov 2.5 12.7 197526 4.8 1.0 9.1 30 Dec 17.0 25.7 197831 22.4 8.1 28.2 30 Annual NA NA NA 98.4 NA NA NA Ann-NCDC NA NA NA 98.4 NA NA NA ------------------------------------------------------------------ Element 11: Relative Humidity (%) MN00LST (Statistic 70): Mean of Observations at 0000 LST MN03LST (Statistic 73): Mean of Observations at 0300 LST MN06LST (Statistic 76): Mean of Observations at 0600 LST MN09LST (Statistic 79): Mean of Observations at 0900 LST MN12LST (Statistic 82): Mean of Observations at 1200 LST MN15LST (Statistic 85): Mean of Observations at 1500 LST MN18LST (Statistic 88): Mean of Observations at 1800 LST MN21LST (Statistic 91): Mean of Observations at 2100 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: MN00LST MN03LST MN06LST MN09LST MN12LST MN15LST MN18LST MN21LST MN3HRLY Month ---------------------------------------------------------------------------------- Jan 75.0 75.8 76.2 73.8 66.7 64.9 71.3 74.1 72.2 Feb 75.6 76.5 77.3 73.4 64.6 62.5 69.1 73.7 71.6 Mar 75.9 77.7 78.9 69.7 60.6 58.6 64.4 71.8 69.7 Apr 72.2 75.8 77.1 62.9 54.9 52.8 57.3 66.3 64.9 May 73.4 77.4 76.7 61.1 53.4 51.0 53.6 66.0 64.1 Jun 74.8 79.2 77.7 63.3 55.2 52.4 55.1 67.1 65.6 Jul 78.8 82.3 81.7 65.5 56.8 54.0 57.8 70.7 68.5 Aug 81.2 84.5 84.9 67.4 56.9 54.8 60.7 75.1 70.7 Sep 80.9 83.5 85.2 68.8 56.7 54.6 63.2 75.8 71.1 Oct 76.2 79.6 81.4 68.1 55.1 52.7 63.7 71.9 68.6 Nov 76.9 79.1 80.4 74.8 63.7 61.1 70.1 74.3 72.5 Dec 78.2 79.3 79.8 77.6 69.7 67.9 74.4 77.1 75.5 Annual 76.6 79.2 79.8 68.8 59.5 57.3 63.4 72.0 69.6 Ann-NCDC 76.6 79.2 79.8 68.9 59.5 57.3 63.4 72.0 69.6 ---------------------------------------------------------------------------------- Element 11: Relative Humidity (%) Statistic 98: Number of Years used to Calculate Normal Qualifier: 70: Mean of Observations at 0000 LST Qualifier: 73: Mean of Observations at 0300 LST Qualifier: 76: Mean of Observations at 0600 LST Qualifier: 79: Mean of Observations at 0900 LST Qualifier: 82: Mean of Observations at 1200 LST Qualifier: 85: Mean of Observations at 1500 LST Qualifier: 88: Mean of Observations at 1800 LST Qualifier: 91: Mean of Observations at 2100 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: 70 73 76 79 82 85 88 91 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 1019.1 30 Feb 1018.9 30 Mar 1016.3 30 Apr 1015.0 30 May 1015.0 30 Jun 1014.5 30 Jul 1015.8 30 Aug 1016.5 30 Sep 1017.4 30 Oct 1017.8 30 Nov 1017.4 30 Dec 1018.6 30 Annual 1016.8 30 Ann-NCDC 1016.9 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 46.0 135.8 Feb 46.0 136.2 Mar 51.0 187.0 Apr 54.0 215.3 May 62.0 281.9 Jun 68.0 311.4 Jul 69.0 318.4 Aug 66.0 283.0 Sep 60.0 226.6 Oct 56.0 193.2 Nov 38.0 113.3 Dec 37.0 106.3 Annual 56.0 2508.4 Ann-NCDC NA 2508.4 -------------------------- Element 15: Sunshine Qualifier: 15: Mean Monthly Value #_YEARS (Statistic 98): Number of Years used to Calculate Normal ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 29 Feb 29 Mar 28 Apr 29 May 29 Jun 29 Jul 30 Aug 30 Sep 30 Oct 30 Nov 30 Dec 30 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 5.5 Feb 5.4 Mar 5.7 Apr 5.7 May 5.0 Jun 4.4 Jul 3.9 Aug 3.8 Sep 4.2 Oct 4.7 Nov 5.1 Dec 5.3 Annual 4.9 Ann-NCDC 4.9 ------------------ 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 .017 .020 .020 .017 .017 .022 .024 .039 .081 Feb .017 .048 .051 .046 .029 .029 .018 .032 .074 Mar .018 .068 .071 .051 .043 .043 .030 .051 .074 Apr .022 .092 .084 .056 .053 .049 .033 .047 .093 May .030 .105 .100 .058 .043 .049 .036 .045 .087 Jun .045 .092 .077 .041 .035 .038 .034 .045 .097 Jul .060 .084 .067 .038 .032 .032 .029 .044 .087 Aug .057 .068 .059 .037 .026 .030 .029 .050 .105 Sep .048 .061 .052 .031 .030 .031 .034 .063 .120 Oct .034 .040 .036 .028 .024 .028 .030 .067 .128 Nov .021 .036 .031 .020 .018 .020 .028 .056 .108 Dec .020 .024 .023 .020 .018 .029 .029 .047 .090 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 .099 .097 .127 .145 .099 .075 .056 .045 Feb .089 .072 .091 .108 .097 .069 .071 .058 Mar .077 .064 .072 .084 .079 .060 .052 .061 Apr .074 .061 .066 .073 .058 .041 .040 .058 May .078 .082 .065 .060 .048 .030 .029 .055 Jun .101 .099 .080 .067 .047 .032 .023 .047 Jul .093 .111 .088 .066 .053 .034 .032 .050 Aug .106 .109 .082 .066 .058 .040 .032 .047 Sep .106 .089 .065 .065 .060 .049 .044 .052 Oct .115 .086 .083 .083 .074 .058 .047 .040 Nov .115 .092 .098 .102 .084 .064 .058 .048 Dec .100 .100 .100 .118 .110 .071 .058 .042 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 270.0 30 Feb 270.0 30 Mar 270.0 30 Apr 180.0 30 May 22.5 30 Jun 202.5 30 Jul 225.0 30 Aug 225.0 30 Sep 180.0 30 Oct 180.0 30 Nov 202.5 30 Dec 270.0 30 Annual 202.5 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 5.4 30 Feb 5.5 30 Mar 5.8 30 Apr 5.4 30 May 4.9 30 Jun 4.7 30 Jul 4.5 30 Aug 4.5 30 Sep 4.6 30 Oct 4.8 30 Nov 5.8 30 Dec 5.8 30 Annual 5.2 NA Ann-NCDC 5.1 NA -------------------------- Element 51: Number Days with Thunder (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan .4 Feb .3 Mar 2.0 Apr 4.1 May 4.9 Jun 6.5 Jul 6.1 Aug 6.0 Sep 4.7 Oct 1.6 Nov 1.1 Dec .7 Annual 38.4 Ann-NCDC 38.4 ------------------ Element 61: Number Days with Haze/Smoke (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 12.5 Feb 11.7 Mar 13.0 Apr 11.2 May 12.1 Jun 13.0 Jul 15.8 Aug 18.0 Sep 15.0 Oct 11.5 Nov 11.4 Dec 11.7 Annual 156.9 Ann-NCDC 156.9 ------------------ Element 63: Number Days with Blowing Dust/Sand (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan .1 Feb .0 Mar .0 Apr * May .1 Jun .1 Jul * Aug .0 Sep .0 Oct .0 Nov .0 Dec .0 Annual .3 Ann-NCDC 0.3 ------------------ 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 1.4 .0 Feb 2.2 .0 Mar 10.2 .0 Apr 22.4 .0 May 30.2 .0 Jun 30.0 .5 Jul 31.0 1.6 Aug 31.0 .8 Sep 30.0 .3 Oct 28.2 .0 Nov 13.8 .0 Dec 2.5 .0 Annual 232.9 3.2 Ann-NCDC 232.9 3.2 -------------------------- 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 28.7 31.0 Feb 25.0 28.0 Mar 21.0 30.3 Apr 7.8 27.2 May .9 20.3 Jun .0 6.5 Jul .0 1.6 Aug .0 2.2 Sep .2 11.3 Oct 5.3 24.7 Nov 16.5 28.9 Dec 26.7 30.9 Annual 132.1 242.9 Ann-NCDC 132.1 242.9 -------------------------- 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 7.3 Feb 6.2 Mar 9.0 Apr 9.5 May 8.9 Jun 8.0 Jul 8.0 Aug 7.5 Sep 7.7 Oct 6.6 Nov 7.9 Dec 7.8 Annual 94.4 Ann-NCDC 94.4 ------------------ Element 97: Number Days with Freezing Rain/Drizzle (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan .2 Feb .4 Mar .4 Apr .0 May .0 Jun .0 Jul .0 Aug .0 Sep .0 Oct .0 Nov * Dec .4 Annual 1.4 Ann-NCDC 1.4 ------------------ Element 98: Number Days with Blowing Snow (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 2.4 Feb 1.3 Mar .5 Apr .2 May .0 Jun .0 Jul .0 Aug .0 Sep .0 Oct .0 Nov .1 Dec 1.1 Annual 5.6 Ann-NCDC 5.6 ------------------ Element AA: Number Days with Rain/Drizzle (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 6.5 Feb 5.9 Mar 11.4 Apr 15.6 May 16.0 Jun 14.1 Jul 13.8 Aug 13.3 Sep 13.6 Oct 13.3 Nov 12.6 Dec 9.3 Annual 145.4 Ann-NCDC 145.4 ------------------ Element AB: Number Days with Snow/Hail (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 16.5 Feb 13.8 Mar 11.1 Apr 3.8 May .3 Jun .0 Jul .0 Aug .0 Sep .0 Oct .8 Nov 6.6 Dec 15.3 Annual 68.2 Ann-NCDC 68.2 ------------------ Element AC: Number Days with Fog/Mist (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 10.2 Feb 10.0 Mar 11.7 Apr 10.1 May 8.9 Jun 8.0 Jul 8.1 Aug 10.9 Sep 11.5 Oct 10.5 Nov 11.7 Dec 12.2 Annual 123.8 Ann-NCDC 123.8 ------------------ 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 ------------------