Station Name: ABERDEEN/REGIONAL ARPT SD WMO Station Number: 72659 National I.D. Number: 00390020 Country: UNITED STATES OF AMERICA WMO Region: REGION IV - NORTH & CENTRAL AMERICA Latitude: 45d 27m N Longitude: 098d 26m W Elevation: 400 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 -12.2 30 Feb -8.5 30 Mar -1.2 30 Apr 7.3 30 May 13.9 30 Jun 19.2 30 Jul 22.7 30 Aug 21.4 30 Sep 15.3 30 Oct 8.5 30 Nov -.9 30 Dec -9.3 30 Annual 6.3 30 Ann-NCDC 6.3 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 1963 1963 1961 eyr: 1990 1990 1990 1990 Statistic: MEAN MAX_VAL DATEMAX #_YEARS Month ------------------------------------------ Jan -6.2 15.6 198124 30 Feb -2.8 16.7 198707 30 Mar 4.3 27.8 196331 30 Apr 14.1 36.1 198021 30 May 20.9 35.6 196927 30 Jun 26.0 42.2 198824 30 Jul 29.9 43.3 196610 30 Aug 29.1 44.4 196513 30 Sep 22.7 39.4 197006 30 Oct 15.8 35.6 196305 30 Nov 4.7 25.6 197504 30 Dec -3.7 16.7 196901 30 Annual 12.9 NA NA 30 Ann-NCDC 12.9 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 1963 1963 1961 eyr: 1990 1990 1990 1990 Statistic: MEAN MIN_VAL DATEMIN #_YEARS Month ------------------------------------------ Jan -18.1 -37.2 197215 30 Feb -14.2 -38.3 197108 30 Mar -6.8 -28.9 197804 30 Apr .6 -18.9 197503 30 May 6.9 -6.7 198110 30 Jun 12.4 .6 196402 30 Jul 15.3 3.9 197130 30 Aug 13.8 .0 198731 30 Sep 7.8 -6.7 196526 30 Oct 1.2 -12.8 198721 30 Nov -6.7 -32.8 196430 30 Dec -14.8 -39.4 196731 30 Annual -.2 NA NA 30 Ann-NCDC -0.2 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: 1964 1964 1964 eyr: 1990 1990 1990 Statistic: SD3HRLY MN3HRLY #_YEARS Month ---------------------------------- Jan 8.4 -12.3 21 Feb 8.1 -8.4 21 Mar 6.4 -2.4 21 Apr 5.2 4.3 21 May 5.2 10.2 21 Jun 4.1 15.4 21 Jul 3.8 18.0 20 Aug 4.2 16.5 20 Sep 5.2 11.1 19 Oct 5.2 5.3 21 Nov 6.3 -2.7 21 Dec 7.3 -9.5 21 Annual 11.8 3.8 18 Ann-NCDC NA 3.8 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: 1964 1964 1964 eyr: 1990 1990 1990 Statistic: SD3HRLY MN3HRLY #_YEARS Month ---------------------------------- Jan 9.9 -15.9 21 Feb 9.3 -11.7 21 Mar 6.9 -5.6 21 Apr 5.5 .2 21 May 6.0 6.2 21 Jun 4.4 12.6 21 Jul 4.2 14.9 20 Aug 4.6 13.2 20 Sep 5.6 7.7 19 Oct 5.5 1.7 21 Nov 6.7 -5.5 21 Dec 8.3 -12.4 21 Annual 12.1 .5 18 Ann-NCDC NA .4 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 9.4 0.3 3.0 5.8 9.1 14.5 28.2 30 Feb 11.9 2.0 4.3 7.9 11.9 18.0 39.1 30 Mar 34.0 1.0 9.9 19.8 32.5 53.3 100.8 30 Apr 49.5 3.0 16.0 30.5 48.3 77.0 200.2 30 May 61.2 13.2 32.3 47.2 63.5 86.9 123.4 30 Jun 80.0 9.4 37.1 58.2 82.0 116.8 196.1 30 Jul 69.8 7.6 33.5 51.8 71.9 101.3 195.8 30 Aug 54.1 8.4 22.4 37.3 54.6 80.8 150.6 30 Sep 47.2 1.3 15.2 29.0 46.2 73.7 134.9 30 Oct 28.4 0.0 7.6 16.3 27.2 45.2 130.6 30 Nov 15.0 0.0 2.5 6.9 13.2 24.4 63.2 30 Dec 10.4 0.0 3.0 6.4 10.2 16.5 34.8 30 Annual 470.9 NA NA NA NA NA NA 30 Ann-NCDC 470.9 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: 1963 1963 1963 eyr: 1990 1990 1990 Statistic: MAX_DLY DATEMAX #_YEARS Month ---------------------------------- Jan 11.2 197610 27 Feb 22.1 196927 27 Mar 63.2 196818 27 Apr 48.5 196819 27 May 59.7 198608 27 Jun 97.3 197830 27 Jul 62.5 198318 26 Aug 82.5 199017 27 Sep 63.5 196717 26 Oct 40.1 198208 27 Nov 33.0 197708 27 Dec 21.8 198826 27 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: 1963 1963 1963 1963 1963 1963 1963 eyr: 1990 1990 1990 1990 1990 1990 1990 Statistic: MEDIAN MAX_DLY DATEMAX MEANMLY QUAR25% QUAR75% #_YEARS Month ------------------------------------------------------------------ Jan 10.9 17.8 197610 14.0 7.4 20.1 27 Feb 14.5 34.5 196927 15.7 6.1 22.4 27 Mar 14.7 25.1 196604 19.3 7.1 26.4 27 Apr 3.8 33.3 197012 9.7 .3 15.7 27 May .0 1.3 197910 .3 .0 Trace 27 Jun .0 .0 199030 .0 .0 .0 27 Jul .0 .0 199031 .0 .0 .0 25 Aug .0 .0 199031 .0 .0 .0 26 Sep .0 .3 196523 * .0 .0 25 Oct .8 8.4 197007 2.3 Trace 3.3 26 Nov 10.7 17.3 197719 12.7 2.8 14.7 27 Dec 13.2 21.8 198826 15.5 2.8 25.1 27 Annual NA NA NA 89.5 NA NA NA Ann-NCDC NA NA NA 89.5 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: 1964 1964 1964 1964 1964 1964 1964 1964 1964 eyr: 1990 1990 1990 1990 1990 1990 1990 1990 1990 Statistic: MN00LST MN03LST MN06LST MN09LST MN12LST MN15LST MN18LST MN21LST MN3HRLY Month ---------------------------------------------------------------------------------- Jan 74.4 74.4 75.7 75.0 69.8 66.7 72.3 74.9 72.8 Feb 77.6 77.4 77.8 76.6 69.6 66.3 71.0 76.9 74.1 Mar 79.8 81.6 82.4 77.6 66.8 61.8 64.9 76.8 73.4 Apr 73.8 78.2 80.9 68.2 54.3 48.4 50.0 65.9 64.9 May 71.8 76.9 80.0 63.6 51.2 46.1 47.1 62.3 62.4 Jun 77.9 82.8 84.2 68.3 56.2 50.7 52.0 68.6 67.3 Jul 76.3 81.8 85.0 65.8 51.4 44.6 47.1 67.3 64.4 Aug 74.6 81.1 85.8 68.5 50.7 42.9 45.3 65.6 63.5 Sep 75.7 81.6 84.3 71.4 53.0 45.5 49.1 67.6 66.3 Oct 75.0 78.6 80.9 73.4 54.4 46.9 55.0 69.4 67.3 Nov 80.1 81.4 82.2 80.2 67.3 60.5 70.0 76.9 75.1 Dec 79.0 79.2 80.0 79.2 71.8 67.5 75.0 77.8 76.3 Annual 76.7 79.9 81.8 72.4 59.9 54.2 58.4 71.1 69.5 Ann-NCDC 76.3 79.6 81.6 72.3 59.7 54.0 58.2 70.8 69.0 ---------------------------------------------------------------------------------- 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: 1964 1964 1964 1964 1964 1964 1964 1964 1964 eyr: 1990 1990 1990 1990 1990 1990 1990 1990 1990 Qualifier: 70 73 76 79 82 85 88 91 94 Month ---------------------------------------------------------------------------------- Jan 21 21 24 25 25 25 25 25 21 Feb 21 21 24 25 25 25 25 25 21 Mar 21 21 24 25 25 25 25 25 21 Apr 21 21 24 25 25 25 25 23 21 May 21 21 25 25 25 25 25 23 21 Jun 20 20 25 25 25 25 25 23 20 Jul 19 19 26 26 26 26 26 23 19 Aug 19 19 26 26 26 26 26 23 19 Sep 19 19 25 25 25 25 25 22 19 Oct 20 20 26 26 26 26 26 23 20 Nov 21 21 25 26 26 26 26 26 21 Dec 21 21 25 26 26 26 26 26 21 Annual 18 18 22 24 24 24 24 21 18 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: 1964 1964 eyr: 1990 1990 Statistic: MN3HRLY #_YEARS Month -------------------------- Jan 1020.9 21 Feb 1019.8 21 Mar 1016.6 21 Apr 1014.3 21 May 1013.0 21 Jun 1011.8 20 Jul 1013.3 19 Aug 1013.9 19 Sep 1015.2 19 Oct 1016.2 20 Nov 1018.0 21 Dec 1019.0 21 Annual 1015.9 18 Ann-NCDC 1016.0 NA -------------------------- Element 16: Wind Speed (m/sec) MN3HRLY (Statistic 94): Mean of 3-Hourly Observations ------------------ byr: 1964 eyr: 1990 Month ------------------ Jan 5.3 Feb 5.4 Mar 6.0 Apr 6.3 May 6.0 Jun 5.1 Jul 4.6 Aug 4.9 Sep 5.1 Oct 5.4 Nov 5.3 Dec 5.1 Annual 5.4 Ann-NCDC 5.4 ------------------ 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: 1964 1964 1964 1964 1964 1964 1964 1964 1964 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 .026 .054 .033 .027 .021 .022 .031 .082 .121 Feb .025 .074 .051 .037 .027 .029 .038 .077 .116 Mar .020 .071 .056 .048 .037 .037 .050 .086 .096 Apr .019 .081 .065 .055 .048 .060 .057 .094 .072 May .020 .063 .062 .054 .048 .052 .066 .108 .092 Jun .026 .056 .049 .045 .042 .052 .080 .109 .104 Jul .030 .054 .053 .057 .046 .056 .078 .125 .107 Aug .029 .057 .054 .049 .047 .052 .083 .140 .109 Sep .027 .052 .046 .040 .033 .042 .056 .126 .112 Oct .022 .045 .029 .029 .028 .027 .038 .116 .126 Nov .026 .064 .039 .033 .022 .027 .038 .090 .112 Dec .028 .059 .042 .028 .018 .019 .029 .082 .126 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: 1964 1964 1964 1964 1964 1964 1964 1964 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 .046 .038 .041 .081 .109 .104 .108 Feb .053 .042 .034 .030 .054 .101 .103 .110 Mar .036 .030 .028 .028 .050 .090 .105 .132 Apr .027 .026 .027 .029 .041 .074 .101 .125 May .035 .035 .032 .030 .047 .060 .092 .104 Jun .045 .038 .044 .043 .049 .077 .062 .077 Jul .039 .031 .026 .031 .042 .064 .079 .083 Aug .042 .029 .027 .029 .048 .058 .068 .081 Sep .044 .034 .034 .038 .058 .084 .082 .092 Oct .047 .041 .041 .043 .074 .102 .101 .091 Nov .056 .038 .033 .039 .073 .106 .093 .110 Dec .060 .045 .040 .041 .075 .109 .092 .108 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: 1964 1964 eyr: 1990 1990 Statistic: PREVAIL #_YEARS Month -------------------------- Jan 180.0 21 Feb 180.0 21 Mar 360.0 21 Apr 360.0 21 May 157.5 21 Jun 157.5 20 Jul 157.5 19 Aug 157.5 19 Sep 157.5 19 Oct 180.0 20 Nov 180.0 21 Dec 180.0 21 Annual 180.0 NA Ann-NCDC NA NA -------------------------- Element 51: Number Days with Thunder (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1963 eyr: 1990 Month ------------------ Jan .0 Feb .0 Mar .3 Apr 1.9 May 4.9 Jun 10.0 Jul NA Aug NA Sep 3.2 Oct 1.5 Nov .0 Dec .0 Annual NA Ann-NCDC NA ------------------ Element 61: Number Days with Haze/Smoke (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1963 eyr: 1990 Month ------------------ Jan .6 Feb 1.2 Mar 1.2 Apr 1.4 May .7 Jun .9 Jul NA Aug NA Sep .8 Oct .8 Nov .4 Dec .7 Annual NA Ann-NCDC NA ------------------ Element 63: Number Days with Blowing Dust/Sand (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1963 eyr: 1990 Month ------------------ Jan .1 Feb .0 Mar .2 Apr .0 May .0 Jun .1 Jul NA Aug NA Sep .0 Oct .1 Nov .0 Dec .1 Annual NA Ann-NCDC NA ------------------ 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: 1963 1963 eyr: 1990 1990 Qualifier: 10.0 35.0 Month -------------------------- Jan .4 .0 Feb 1.7 .0 Mar 7.2 .0 Apr 21.7 * May 30.3 * Jun 30.0 .9 Jul 31.0 4.4 Aug 31.0 3.7 Sep 29.4 .8 Oct 25.0 * Nov 7.7 .0 Dec 1.1 .0 Annual 216.5 9.8 Ann-NCDC 216.5 9.8 -------------------------- 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: 1963 1963 eyr: 1990 1990 Qualifier: 0.0 10.0 Month -------------------------- Jan 30.9 31.0 Feb 27.5 28.0 Mar 26.9 31.0 Apr 14.8 28.8 May 3.1 23.1 Jun .0 8.9 Jul .0 2.2 Aug * 6.6 Sep 1.8 20.5 Oct 13.5 30.0 Nov 27.3 29.9 Dec 30.9 31.0 Annual 176.7 271.0 Ann-NCDC 176.7 271.0 -------------------------- Element 95: Number Days with Precipitation GE Threshold (count) Qualifier: 1.0 mm MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1963 eyr: 1990 Month ------------------ Jan 3.0 Feb 3.3 Mar 5.1 Apr 6.6 May 7.5 Jun 8.6 Jul 7.2 Aug 6.2 Sep 4.8 Oct 3.7 Nov 3.2 Dec 2.9 Annual 62.1 Ann-NCDC 62.1 ------------------ Element 97: Number Days with Freezing Rain/Drizzle (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1963 eyr: 1990 Month ------------------ Jan .2 Feb .6 Mar .2 Apr .0 May .0 Jun .0 Jul NA Aug NA Sep .0 Oct .0 Nov .1 Dec .5 Annual NA Ann-NCDC NA ------------------ Element 98: Number Days with Blowing Snow (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1963 eyr: 1990 Month ------------------ Jan 4.8 Feb 2.8 Mar 2.3 Apr .4 May .0 Jun .0 Jul NA Aug NA Sep .0 Oct .2 Nov 1.4 Dec 2.9 Annual NA Ann-NCDC NA ------------------ Element AA: Number Days with Rain/Drizzle (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1963 eyr: 1990 Month ------------------ Jan 2.0 Feb 3.4 Mar 6.4 Apr 13.5 May 15.9 Jun 17.0 Jul NA Aug NA Sep 12.9 Oct 9.9 Nov 5.6 Dec 3.2 Annual NA Ann-NCDC NA ------------------ Element AB: Number Days with Snow/Hail (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1963 eyr: 1990 Month ------------------ Jan 17.6 Feb 16.9 Mar 13.1 Apr 5.7 May .8 Jun .0 Jul NA Aug NA Sep .4 Oct 2.9 Nov 10.8 Dec 18.7 Annual NA Ann-NCDC NA ------------------ Element AC: Number Days with Fog/Mist (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1963 eyr: 1990 Month ------------------ Jan 7.3 Feb 7.8 Mar 9.6 Apr 8.7 May 5.6 Jun 4.9 Jul NA Aug NA Sep 8.0 Oct 6.0 Nov 7.9 Dec 9.5 Annual NA Ann-NCDC NA ------------------ Element AD: Number Days with Weather Phenomena (count) #_YEARS (Statistic 98): Number of Years used to Calculate Normal ------------------ byr: 1963 eyr: 1990 Month ------------------ Jan 18 Feb 21 Mar 19 Apr 17 May 17 Jun 17 Jul 14 Aug 15 Sep 16 Oct 17 Nov 17 Dec 19 Annual NA Ann-NCDC NA ------------------