Station Name: OLYMPIA, WA WMO Station Number: 72792 National I.D. Number: 00456114 Country: UNITED STATES OF AMERICA WMO Region: REGION IV - NORTH & CENTRAL AMERICA Latitude: 46d 58m N Longitude: 122d 54m W Elevation: 59 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 3.3 30 Feb 5.1 30 Mar 6.6 30 Apr 8.6 30 May 11.8 30 Jun 14.8 30 Jul 17.2 30 Aug 17.4 30 Sep 14.4 30 Oct 9.8 30 Nov 5.8 30 Dec 3.4 30 Annual 9.8 30 Ann-NCDC 9.9 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 6.9 16.1 198404 30 Feb 9.7 22.8 198627 30 Mar 12.2 24.4 196926 30 Apr 14.9 30.6 198727 30 May 18.5 35.6 198328 30 Jun 21.6 36.7 198218 30 Jul 24.7 37.8 196112 30 Aug 25.1 40.0 198109 30 Sep 21.7 36.7 198802 30 Oct 15.8 32.2 198701 30 Nov 10.0 22.2 198004 30 Dec 6.8 17.2 198015 30 Annual 15.7 NA NA 30 Ann-NCDC 15.7 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 -.2 -22.2 197901 30 Feb .4 -18.3 197202 30 Mar .9 -12.8 198903 30 Apr 2.3 -5.0 197508 30 May 5.0 -3.3 196402 30 Jun 8.0 -1.1 197603 30 Jul 9.6 1.7 196203 30 Aug 9.7 .6 197318 30 Sep 7.1 -3.9 197227 30 Oct 3.8 -6.7 197128 30 Nov 1.7 -17.8 198524 30 Dec .1 -21.7 198323 30 Annual 4.0 NA NA 30 Ann-NCDC 4.0 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 4.5 2.7 30 Feb 4.1 3.8 30 Mar 3.6 4.7 30 Apr 3.4 6.5 29 May 3.4 9.2 28 Jun 3.2 11.9 26 Jul 3.2 13.7 26 Aug 3.2 13.9 27 Sep 3.5 11.8 28 Oct 3.8 8.4 30 Nov 4.1 5.2 30 Dec 4.4 2.9 30 Annual 5.4 7.9 26 Ann-NCDC NA 7.9 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 5.3 1.4 30 Feb 4.6 2.2 30 Mar 3.8 2.7 30 Apr 3.2 4.0 29 May 3.0 6.6 28 Jun 2.7 9.4 26 Jul 2.4 11.1 26 Aug 2.4 11.5 27 Sep 3.1 9.8 28 Oct 3.7 7.1 30 Nov 4.3 4.2 30 Dec 5.0 1.9 30 Annual 5.2 6.0 26 Ann-NCDC NA 6.0 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 203.5 7.4 93.2 147.3 208.3 297.9 384.3 30 Feb 146.6 43.4 86.1 118.9 153.2 200.7 334.8 30 Mar 125.7 12.2 72.9 101.3 131.3 172.5 254.3 30 Apr 83.6 32.3 57.4 72.6 87.6 107.7 149.1 30 May 53.1 6.4 26.2 39.6 54.6 76.2 139.2 30 Jun 41.4 3.6 18.0 29.2 42.2 61.2 95.0 30 Jul 20.8 0.0 5.1 11.4 19.8 33.5 76.2 30 Aug 32.8 0.0 5.3 14.7 29.0 53.8 138.4 30 Sep 57.4 0.0 16.3 33.8 55.9 91.2 192.8 30 Oct 109.5 9.9 45.7 75.9 111.0 163.6 256.0 30 Nov 204.5 34.8 116.3 163.6 213.1 282.4 394.0 30 Dec 206.2 63.5 129.8 172.5 216.2 275.6 363.7 30 Annual 1285.1 NA NA NA NA NA NA 30 Ann-NCDC 1285.1 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 97.0 199009 30 Feb 61.2 197906 30 Mar 86.4 197205 30 Apr 58.7 196519 30 May 32.8 197323 30 Jun 40.6 198506 30 Jul 33.0 197901 30 Aug 35.1 197723 30 Sep 38.4 197221 30 Oct 71.6 198106 30 Nov 110.0 196219 30 Dec 70.4 198203 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 5.8 36.1 197224 18.3 Trace 27.2 30 Feb 2.5 27.4 198901 9.1 .0 13.0 30 Mar Trace 22.1 196620 4.1 .0 2.8 30 Apr Trace 4.6 197212 .3 .0 Trace 30 May .0 Trace 198829 Trace .0 .0 30 Jun .0 Trace 197602 Trace .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 Trace 197024 Trace .0 .0 30 Nov .0 26.2 197819 3.3 .0 .3 30 Dec 6.3 21.6 196828 12.2 Trace 18.5 30 Annual NA NA NA 47.3 NA NA NA Ann-NCDC NA NA NA NA NA NA NA ------------------------------------------------------------------ Element 11: Relative Humidity (%) MN01LST (Statistic 71): Mean of Observations at 0100 LST MN04LST (Statistic 74): Mean of Observations at 0400 LST MN07LST (Statistic 77): Mean of Observations at 0700 LST MN10LST (Statistic 80): Mean of Observations at 1000 LST MN13LST (Statistic 83): Mean of Observations at 1300 LST MN16LST (Statistic 86): Mean of Observations at 1600 LST MN19LST (Statistic 89): Mean of Observations at 1900 LST MN22LST (Statistic 92): Mean of Observations at 2200 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: MN01LST MN04LST MN07LST MN10LST MN13LST MN16LST MN19LST MN22LST MN3HRLY Month ---------------------------------------------------------------------------------- Jan 90.7 91.2 91.0 88.7 81.2 80.0 87.5 89.6 87.5 Feb 90.2 91.2 91.4 87.0 74.0 71.1 83.1 88.0 84.5 Mar 89.6 91.0 91.2 79.8 65.6 62.0 75.0 85.8 80.0 Apr 88.3 90.2 89.0 70.8 59.6 56.6 66.7 82.0 75.6 May 87.4 89.6 84.2 66.5 57.4 54.5 61.9 80.1 72.9 Jun 87.9 90.7 83.2 66.8 57.6 54.2 60.3 78.9 72.4 Jul 87.3 90.6 84.3 64.9 54.0 50.2 56.6 78.1 70.8 Aug 88.2 90.9 87.9 66.7 53.6 49.5 59.8 80.2 72.1 Sep 91.0 92.9 92.4 73.5 58.2 55.1 71.8 86.3 77.6 Oct 93.3 93.9 94.1 85.3 69.9 67.8 85.6 91.4 85.1 Nov 92.4 92.6 92.7 88.8 79.5 80.1 89.7 91.5 88.4 Dec 91.6 91.9 91.8 89.6 83.7 84.1 89.8 90.6 89.1 Annual 89.8 91.4 89.4 77.3 66.2 63.7 73.9 85.3 79.7 Ann-NCDC 89.8 91.4 89.4 77.4 66.2 63.8 74.0 85.2 79.7 ---------------------------------------------------------------------------------- Element 11: Relative Humidity (%) Statistic 98: Number of Years used to Calculate Normal Qualifier: 71: Mean of Observations at 0100 LST Qualifier: 74: Mean of Observations at 0400 LST Qualifier: 77: Mean of Observations at 0700 LST Qualifier: 80: Mean of Observations at 1000 LST Qualifier: 83: Mean of Observations at 1300 LST Qualifier: 86: Mean of Observations at 1600 LST Qualifier: 89: Mean of Observations at 1900 LST Qualifier: 92: Mean of Observations at 2200 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: 71 74 77 80 83 86 89 92 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 29 30 30 30 30 30 30 29 29 May 28 30 30 30 30 30 30 28 28 Jun 26 30 30 30 30 30 30 26 26 Jul 26 30 30 30 30 30 30 26 26 Aug 27 30 30 30 30 30 30 27 27 Sep 28 30 30 30 30 30 30 28 28 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 26 30 30 30 30 30 30 26 26 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 1018.0 30 Feb 1017.4 30 Mar 1016.3 30 Apr 1017.8 29 May 1017.8 29 Jun 1017.2 29 Jul 1017.9 29 Aug 1016.8 29 Sep 1016.9 30 Oct 1018.0 30 Nov 1016.5 30 Dec 1017.7 30 Annual 1017.4 29 Ann-NCDC 1017.4 NA -------------------------- Element 16: Wind Speed (m/sec) MN3HRLY (Statistic 94): Mean of 3-Hourly Observations ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 3.5 Feb 3.4 Mar 3.5 Apr 3.7 May 3.5 Jun 3.3 Jul 3.1 Aug 3.0 Sep 2.8 Oct 2.9 Nov 3.5 Dec 3.5 Annual 3.3 Ann-NCDC 3.3 ------------------ 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 .151 .042 .060 .038 .028 .020 .015 .027 .134 Feb .155 .042 .055 .038 .026 .021 .019 .025 .131 Mar .153 .043 .053 .038 .025 .021 .019 .027 .136 Apr .106 .042 .048 .037 .022 .019 .019 .028 .114 May .108 .047 .046 .034 .019 .017 .019 .036 .095 Jun .112 .051 .054 .041 .017 .016 .020 .034 .096 Jul .135 .063 .057 .037 .016 .014 .025 .039 .093 Aug .155 .064 .056 .033 .022 .018 .024 .037 .094 Sep .189 .072 .074 .046 .021 .022 .023 .034 .089 Oct .201 .052 .059 .040 .023 .020 .023 .036 .111 Nov .142 .042 .047 .038 .027 .023 .020 .033 .144 Dec .139 .039 .046 .044 .032 .027 .019 .030 .137 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 .202 .143 .049 .022 .009 .008 .013 .039 Feb .191 .133 .056 .025 .012 .011 .015 .045 Mar .179 .129 .066 .030 .011 .008 .018 .043 Apr .188 .153 .087 .043 .018 .015 .019 .041 May .172 .156 .091 .045 .024 .016 .023 .052 Jun .165 .149 .085 .045 .023 .019 .024 .048 Jul .145 .128 .076 .039 .021 .022 .030 .058 Aug .146 .117 .064 .035 .023 .019 .030 .061 Sep .138 .106 .056 .028 .015 .013 .020 .055 Oct .155 .114 .047 .026 .016 .012 .017 .049 Nov .197 .137 .049 .023 .012 .009 .014 .042 Dec .196 .144 .052 .022 .011 .010 .014 .038 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 202.5 30 Feb 202.5 30 Mar 202.5 30 Apr 202.5 29 May 202.5 28 Jun 202.5 26 Jul 202.5 26 Aug 202.5 27 Sep 202.5 28 Oct 202.5 30 Nov 202.5 30 Dec 202.5 30 Annual 202.5 NA Ann-NCDC NA NA -------------------------- Element 51: Number Days with Thunder (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan .1 Feb .2 Mar .2 Apr .7 May .7 Jun .4 Jul .5 Aug .8 Sep 1.0 Oct .5 Nov .4 Dec .1 Annual 5.6 Ann-NCDC 5.6 ------------------ Element 61: Number Days with Haze/Smoke (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 6.3 Feb 5.8 Mar 3.6 Apr 1.2 May 1.2 Jun .5 Jul 1.0 Aug 2.3 Sep 5.1 Oct 8.5 Nov 5.8 Dec 5.0 Annual 46.3 Ann-NCDC 46.3 ------------------ 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 .0 Sep .0 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 7.6 .0 Feb 14.2 .0 Mar 23.2 .0 Apr 28.1 .0 May 30.9 * Jun 30.0 * Jul 31.0 .6 Aug 31.0 .7 Sep 30.0 .1 Oct 30.1 .0 Nov 17.5 .0 Dec 7.3 .0 Annual 280.9 1.4 Ann-NCDC 280.9 1.4 -------------------------- 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 15.5 30.9 Feb 13.5 27.8 Mar 13.9 30.9 Apr 8.9 29.8 May 2.1 29.6 Jun .1 23.6 Jul .0 18.7 Aug .0 17.3 Sep .7 23.9 Oct 5.6 29.4 Nov 10.2 29.6 Dec 15.4 30.9 Annual 85.9 322.4 Ann-NCDC 85.9 322.4 -------------------------- 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 16.7 Feb 14.9 Mar 15.2 Apr 12.3 May 9.1 Jun 6.4 Jul 3.6 Aug 4.4 Sep 7.2 Oct 11.1 Nov 17.4 Dec 17.7 Annual 136.0 Ann-NCDC 136.0 ------------------ Element 97: Number Days with Freezing Rain/Drizzle (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan .1 Feb .0 Mar .0 Apr .0 May .0 Jun .0 Jul .0 Aug .0 Sep .0 Oct .0 Nov .0 Dec .2 Annual .3 Ann-NCDC 0.3 ------------------ Element 98: Number Days with Blowing Snow (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan .0 Feb .0 Mar .0 Apr .0 May .0 Jun .0 Jul .0 Aug .0 Sep .1 Oct .0 Nov .0 Dec .0 Annual .1 Ann-NCDC 0.1 ------------------ Element AA: Number Days with Rain/Drizzle (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 20.7 Feb 19.4 Mar 20.9 Apr 18.8 May 15.9 Jun 12.9 Jul 9.0 Aug 9.7 Sep 12.5 Oct 17.1 Nov 22.7 Dec 22.5 Annual 202.1 Ann-NCDC 202.1 ------------------ Element AB: Number Days with Snow/Hail (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 6.3 Feb 3.4 Mar 3.0 Apr 1.7 May .2 Jun * Jul .0 Aug .0 Sep .0 Oct * Nov 2.0 Dec 6.1 Annual 22.7 Ann-NCDC 22.7 ------------------ Element AC: Number Days with Fog/Mist (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 25.8 Feb 23.1 Mar 22.1 Apr 16.2 May 11.4 Jun 9.3 Jul 9.4 Aug 14.9 Sep 20.9 Oct 26.6 Nov 26.3 Dec 26.9 Annual 232.9 Ann-NCDC 232.9 ------------------ 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 28 Jul 28 Aug 29 Sep 29 Oct 29 Nov 30 Dec 30 Annual NA Ann-NCDC NA ------------------