Station Name: NEW YORK/JFK, NY WMO Station Number: 74486 National I.D. Number: 00305803 Country: UNITED STATES OF AMERICA WMO Region: REGION IV - NORTH & CENTRAL AMERICA Latitude: 40d 39m N Longitude: 073d 47m W Elevation: 4 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 -.4 30 Feb .5 30 Mar 5.0 30 Apr 10.3 30 May 15.6 30 Jun 20.8 30 Jul 24.2 30 Aug 23.7 30 Sep 19.8 30 Oct 13.9 30 Nov 8.4 30 Dec 2.6 30 Annual 12.0 30 Ann-NCDC 12.0 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 1964 1964 1961 eyr: 1990 1990 1990 1990 Statistic: MEAN MAX_VAL DATEMAX #_YEARS Month ------------------------------------------ Jan 3.1 18.3 197427 30 Feb 4.2 19.4 197627 30 Mar 8.9 29.4 199013 30 Apr 14.6 32.2 197712 30 May 19.8 37.2 196929 30 Jun 25.0 37.2 196430 30 Jul 28.2 40.0 196603 30 Aug 27.7 37.8 198320 30 Sep 23.9 36.7 198310 30 Oct 18.2 29.4 198601 30 Nov 12.1 25.0 198201 30 Dec 5.9 21.1 198204 30 Annual 16.0 NA NA 30 Ann-NCDC 16.0 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 1964 1964 1961 eyr: 1990 1990 1990 1990 Statistic: MEAN MIN_VAL DATEMIN #_YEARS Month ------------------------------------------ Jan -3.9 -18.9 198521 30 Feb -3.2 -17.8 196713 30 Mar 1.1 -13.9 196719 30 Apr 6.0 -6.7 198207 30 May 11.3 1.1 196610 30 Jun 16.6 7.2 196701 30 Jul 20.1 12.8 197906 30 Aug 19.6 7.8 196531 30 Sep 15.6 5.0 197920 30 Oct 9.6 -1.1 197628 30 Nov 4.7 -7.2 198721 30 Dec -.8 -16.7 198325 30 Annual 8.1 NA NA 30 Ann-NCDC 8.1 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 5.4 -2.2 30 Feb 5.1 -1.4 30 Mar 4.5 2.2 30 Apr 3.9 6.7 30 May 3.8 12.1 30 Jun 3.2 17.1 30 Jul 2.8 20.0 30 Aug 3.2 19.8 30 Sep 4.1 16.4 30 Oct 4.8 10.8 30 Nov 5.0 5.9 30 Dec 5.3 .6 30 Annual 8.9 9.0 30 Ann-NCDC NA 9.0 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 7.4 -6.6 30 Feb 7.4 -6.1 30 Mar 6.8 -2.3 30 Apr 6.0 2.5 30 May 5.3 9.1 30 Jun 4.3 14.6 30 Jul 3.9 17.7 30 Aug 4.3 17.6 30 Sep 5.3 14.0 30 Oct 6.5 7.7 30 Nov 6.8 2.3 30 Dec 7.3 -3.5 30 Annual 10.6 5.6 30 Ann-NCDC NA 5.6 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 80.5 12.4 37.8 59.2 82.8 117.3 211.6 30 Feb 76.7 25.7 48.3 64.0 80.5 102.6 124.2 30 Mar 91.2 24.1 54.9 74.9 95.5 124.0 207.5 30 Apr 99.1 33.3 59.9 81.3 103.6 134.4 241.6 30 May 96.5 11.9 46.7 71.6 99.3 139.4 272.0 30 Jun 92.7 5.3 42.2 66.8 95.0 136.1 233.7 30 Jul 96.5 13.7 48.0 72.4 99.6 138.7 215.4 30 Aug 86.6 10.7 39.1 62.2 88.6 127.5 210.8 30 Sep 83.8 24.4 43.7 64.5 86.9 119.1 245.1 30 Oct 73.2 3.3 35.8 54.6 75.4 105.7 167.1 30 Nov 92.7 8.1 40.9 65.8 94.5 136.9 241.6 30 Dec 86.9 15.5 42.4 64.8 89.7 125.5 170.9 30 Annual 1056.4 NA NA NA NA NA NA 30 Ann-NCDC 1056.4 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: 1964 1964 1964 eyr: 1990 1990 1990 Statistic: MAX_DLY DATEMAX #_YEARS Month ---------------------------------- Jan 65.8 197921 27 Feb 62.5 196909 27 Mar 61.0 197722 27 Apr 80.0 198009 27 May 73.2 196829 27 Jun 72.4 198909 27 Jul 81.5 196928 27 Aug 95.8 197608 27 Sep 114.0 196621 27 Oct 81.5 196619 27 Nov 99.6 197208 27 Dec 62.5 197416 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: 1964 1964 1964 1964 1964 1964 1964 eyr: 1990 1990 1990 1990 1990 1990 1990 Statistic: MEDIAN MAX_DLY DATEMAX MEANMLY QUAR25% QUAR75% #_YEARS Month ------------------------------------------------------------------ Jan 17.5 33.0 196413 19.6 7.1 31.5 27 Feb 14.0 50.5 196909 19.3 2.0 26.7 27 Mar 6.1 20.6 196722 7.9 .5 10.4 27 Apr .0 20.3 198206 1.3 .0 Trace 27 May .0 .0 199031 .0 .0 .0 27 Jun .0 .0 199030 .0 .0 .0 27 Jul .0 .0 199031 .0 .0 .0 27 Aug .0 .0 199031 .0 .0 .0 27 Sep .0 .0 199030 .0 .0 .0 27 Oct .0 Trace 197910 Trace .0 .0 27 Nov Trace 8.1 198923 .8 Trace .5 27 Dec 5.8 16.3 196624 6.6 1.8 11.2 27 Annual NA NA NA 55.5 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 67.8 69.5 70.4 64.4 59.0 59.5 63.1 65.3 64.9 Feb 68.0 69.6 70.8 62.8 57.9 58.0 62.6 65.2 64.4 Mar 67.9 70.0 69.9 60.0 55.1 56.2 62.5 65.9 63.4 Apr 70.1 72.3 69.1 58.0 54.8 56.7 63.7 67.9 64.1 May 77.2 79.2 73.3 61.9 58.9 61.9 69.3 74.4 69.5 Jun 79.4 81.9 74.8 63.8 60.5 63.6 71.2 76.8 71.5 Jul 79.0 81.8 75.8 62.8 59.3 63.4 71.8 77.2 71.4 Aug 79.3 82.1 77.8 63.6 59.4 63.1 71.9 76.1 71.7 Sep 79.8 82.5 80.0 64.1 59.0 62.4 71.4 75.6 71.9 Oct 76.0 78.9 78.3 62.7 56.3 59.5 68.3 72.6 69.1 Nov 72.7 74.7 75.5 64.6 58.3 61.1 66.6 69.4 67.9 Dec 69.8 71.4 72.1 65.1 59.9 61.0 64.5 66.9 66.3 Annual 73.9 76.2 74.0 62.8 58.2 60.5 67.3 71.1 68.0 Ann-NCDC 73.9 76.2 74.0 62.8 58.2 60.5 67.2 71.1 68.0 ---------------------------------------------------------------------------------- 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 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 1017.7 30 Feb 1017.3 30 Mar 1016.3 30 Apr 1015.0 30 May 1015.8 30 Jun 1015.3 30 Jul 1015.8 30 Aug 1016.8 30 Sep 1018.4 30 Oct 1019.0 30 Nov 1017.8 30 Dec 1018.3 30 Annual 1017.0 30 Ann-NCDC 1017.0 NA -------------------------- Element 16: Wind Speed (m/sec) MN3HRLY (Statistic 94): Mean of 3-Hourly Observations ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 6.3 Feb 6.4 Mar 6.5 Apr 6.3 May 5.6 Jun 5.2 Jul 4.9 Aug 4.9 Sep 5.0 Oct 5.3 Nov 5.9 Dec 6.1 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 .010 .055 .049 .041 .031 .016 .011 .014 .045 Feb .007 .069 .053 .049 .040 .018 .016 .021 .055 Mar .008 .061 .055 .055 .044 .033 .025 .036 .097 Apr .010 .045 .046 .048 .050 .039 .035 .045 .130 May .014 .047 .055 .045 .048 .050 .047 .064 .161 Jun .010 .042 .037 .038 .042 .036 .038 .058 .189 Jul .011 .042 .041 .033 .032 .033 .031 .057 .176 Aug .012 .054 .049 .044 .029 .026 .027 .052 .150 Sep .011 .064 .079 .070 .045 .031 .026 .046 .106 Oct .012 .070 .069 .056 .038 .026 .026 .031 .083 Nov .009 .059 .054 .055 .034 .025 .018 .025 .067 Dec .010 .061 .060 .049 .029 .012 .013 .015 .042 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 .041 .057 .104 .120 .114 .139 .086 .069 Feb .049 .055 .078 .082 .100 .127 .097 .084 Mar .057 .037 .055 .061 .084 .129 .090 .072 Apr .072 .050 .059 .056 .070 .107 .077 .062 May .094 .059 .065 .046 .040 .056 .053 .055 Jun .131 .077 .074 .047 .038 .049 .046 .048 Jul .140 .094 .092 .049 .037 .040 .043 .050 Aug .124 .098 .093 .058 .038 .042 .046 .058 Sep .088 .075 .080 .056 .046 .051 .061 .064 Oct .072 .076 .087 .072 .074 .077 .065 .066 Nov .056 .064 .095 .094 .099 .107 .077 .062 Dec .042 .060 .105 .105 .120 .128 .082 .066 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 315.0 30 Feb 315.0 30 Mar 315.0 30 Apr 180.0 30 May 180.0 30 Jun 180.0 30 Jul 180.0 30 Aug 180.0 30 Sep 180.0 30 Oct 247.5 30 Nov 315.0 30 Dec 315.0 30 Annual 180.0 NA Ann-NCDC NA NA -------------------------- Element 51: Number Days with Thunder (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1964 eyr: 1990 Month ------------------ Jan .1 Feb .2 Mar 1.0 Apr 1.4 May 2.9 Jun 3.8 Jul 4.8 Aug 4.8 Sep 1.9 Oct 1.0 Nov .6 Dec .1 Annual 22.6 Ann-NCDC 22.6 ------------------ Element 61: Number Days with Haze/Smoke (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1964 eyr: 1990 Month ------------------ Jan 9.8 Feb 8.6 Mar 8.9 Apr 8.9 May 13.3 Jun 16.6 Jul 19.0 Aug 17.6 Sep 13.3 Oct 11.1 Nov 9.7 Dec 8.2 Annual 145.0 Ann-NCDC 145.0 ------------------ Element 63: Number Days with Blowing Dust/Sand (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1964 eyr: 1990 Month ------------------ Jan .0 Feb .0 Mar .0 Apr .0 May .0 Jun .0 Jul .0 Aug .0 Sep .0 Oct .0 Nov .0 Dec .0 Annual .0 Ann-NCDC 0.0 ------------------ 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: 1964 1964 eyr: 1990 1990 Qualifier: 10.0 35.0 Month -------------------------- Jan 3.2 .0 Feb 4.4 .0 Mar 13.2 .0 Apr 25.9 .0 May 30.8 .1 Jun 30.0 .3 Jul 31.0 1.2 Aug 31.0 .3 Sep 30.0 .1 Oct 30.3 .0 Nov 21.1 .0 Dec 7.9 .0 Annual 258.8 2.0 Ann-NCDC 258.8 2.0 -------------------------- 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: 1964 1964 eyr: 1990 1990 Qualifier: 0.0 10.0 Month -------------------------- Jan 23.4 31.0 Feb 20.3 28.0 Mar 11.7 30.9 Apr 1.4 27.3 May .0 11.2 Jun .0 .7 Jul .0 .0 Aug .0 .1 Sep .0 2.6 Oct .3 18.1 Nov 4.3 27.1 Dec 16.9 30.7 Annual 78.3 207.7 Ann-NCDC 78.3 207.7 -------------------------- Element 95: Number Days with Precipitation GE Threshold (count) Qualifier: 1.0 mm MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1964 eyr: 1990 Month ------------------ Jan 8.3 Feb 7.6 Mar 9.0 Apr 8.6 May 9.2 Jun 8.7 Jul 7.8 Aug 7.4 Sep 6.6 Oct 6.1 Nov 8.1 Dec 8.7 Annual 96.1 Ann-NCDC 96.1 ------------------ Element 97: Number Days with Freezing Rain/Drizzle (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1964 eyr: 1990 Month ------------------ Jan .2 Feb .1 Mar .1 Apr .0 May .0 Jun .0 Jul .0 Aug .0 Sep .0 Oct .0 Nov * Dec .1 Annual .5 Ann-NCDC 0.5 ------------------ Element 98: Number Days with Blowing Snow (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1964 eyr: 1990 Month ------------------ Jan .8 Feb .9 Mar .6 Apr .1 May .0 Jun .0 Jul .0 Aug .0 Sep .0 Oct .0 Nov .1 Dec .3 Annual 2.8 Ann-NCDC 2.8 ------------------ Element AA: Number Days with Rain/Drizzle (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1964 eyr: 1990 Month ------------------ Jan 9.0 Feb 8.8 Mar 13.3 Apr 15.3 May 15.3 Jun 14.2 Jul 12.9 Aug 13.3 Sep 11.6 Oct 10.6 Nov 13.4 Dec 12.8 Annual 150.5 Ann-NCDC 150.5 ------------------ Element AB: Number Days with Snow/Hail (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1964 eyr: 1990 Month ------------------ Jan 8.3 Feb 7.6 Mar 5.0 Apr .9 May .0 Jun .0 Jul .0 Aug .0 Sep .0 Oct .1 Nov 1.8 Dec 6.4 Annual 30.1 Ann-NCDC 30.1 ------------------ Element AC: Number Days with Fog/Mist (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1964 eyr: 1990 Month ------------------ Jan 9.7 Feb 9.0 Mar 10.9 Apr 10.3 May 12.8 Jun 12.1 Jul 12.6 Aug 11.9 Sep 11.1 Oct 10.4 Nov 10.5 Dec 10.0 Annual 131.3 Ann-NCDC 131.3 ------------------ Element AD: Number Days with Weather Phenomena (count) #_YEARS (Statistic 98): Number of Years used to Calculate Normal ------------------ byr: 1964 eyr: 1990 Month ------------------ Jan 27 Feb 27 Mar 27 Apr 27 May 27 Jun 27 Jul 27 Aug 27 Sep 27 Oct 27 Nov 27 Dec 27 Annual NA Ann-NCDC NA ------------------