Station Name: BATON ROUGE/WSO AP LA WMO Station Number: National I.D. Number: 00160549 Country: UNITED STATES OF AMERICA WMO Region: REGION IV - NORTH & CENTRAL AMERICA Latitude: 30d 32m N Longitude: 091d 09m W Elevation: 24 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 9.9 30 Feb 11.7 30 Mar 16.3 30 Apr 20.5 30 May 24.1 30 Jun 26.9 30 Jul 27.9 30 Aug 27.7 30 Sep 25.6 30 Oct 20.3 30 Nov 15.6 30 Dec 11.6 30 Annual 19.8 30 Ann-NCDC 19.8 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 15.4 27.8 198907 30 Feb 17.6 29.4 198915 30 Mar 22.4 32.8 196317 30 Apr 26.6 33.3 198721 30 May 29.8 35.6 198928 30 Jun 32.5 38.3 198828 30 Jul 33.0 37.2 198630 30 Aug 32.8 38.9 196210 30 Sep 30.8 37.2 199004 30 Oct 26.7 34.4 198605 30 Nov 21.6 30.6 198608 30 Dec 17.4 29.4 198202 30 Annual 25.5 NA NA 30 Ann-NCDC 25.6 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 4.2 -12.8 198521 30 Feb 5.8 -6.1 198112 30 Mar 10.1 -6.7 198003 30 Apr 14.4 .0 198704 30 May 18.2 7.2 197004 30 Jun 21.3 11.7 198401 30 Jul 22.9 14.4 196715 30 Aug 22.6 15.0 196712 30 Sep 20.4 6.1 196729 30 Oct 13.9 1.7 198920 30 Nov 9.4 -6.1 197630 30 Dec 5.8 -13.3 198923 30 Annual 14.1 NA NA 30 Ann-NCDC 14.1 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 6.9 7.4 30 Feb 6.3 8.8 30 Mar 5.7 12.6 30 Apr 4.6 16.3 30 May 3.2 19.7 30 Jun 2.4 22.6 30 Jul 1.8 23.7 30 Aug 2.0 23.5 30 Sep 3.3 21.6 30 Oct 4.9 16.3 30 Nov 6.0 12.5 30 Dec 6.8 9.1 30 Annual 7.5 16.2 30 Ann-NCDC NA 16.2 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 8.3 4.7 30 Feb 7.7 5.7 30 Mar 7.1 9.6 30 Apr 5.6 13.7 30 May 3.8 17.6 30 Jun 2.7 20.8 30 Jul 1.8 22.3 30 Aug 2.1 22.1 30 Sep 3.8 19.9 30 Oct 5.8 13.9 30 Nov 7.1 10.1 30 Dec 8.3 6.5 30 Annual 8.6 13.9 30 Ann-NCDC NA 13.9 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 124.7 29.2 63.2 94.5 128.8 178.3 289.8 30 Feb 140.2 17.8 66.3 102.9 144.0 204.0 368.6 30 Mar 122.2 15.5 60.7 91.9 126.2 175.5 323.3 30 Apr 136.4 9.7 42.4 82.0 132.3 213.1 376.9 30 May 124.2 16.0 63.0 94.2 128.5 177.8 372.6 30 Jun 113.8 3.0 36.1 68.8 110.7 177.3 588.8 30 Jul 171.2 52.1 114.0 146.8 179.6 223.5 278.9 30 Aug 152.4 33.5 82.8 119.4 158.5 213.9 367.8 30 Sep 123.2 19.8 54.6 87.9 125.7 181.6 354.3 30 Oct 88.4 0.0 22.6 49.5 84.3 141.2 367.8 30 Nov 109.5 6.4 38.1 69.3 108.2 168.7 344.2 30 Dec 140.5 49.3 79.5 112.0 146.6 194.3 404.9 30 Annual 1546.7 NA NA NA NA NA NA 30 Ann-NCDC 1546.7 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 86.1 197507 30 Feb 114.6 196117 30 Mar 133.3 197324 30 Apr 304.5 196714 30 May 123.2 197207 30 Jun 124.5 198928 30 Jul 108.2 196910 30 Aug 201.7 198711 30 Sep 160.3 197312 30 Oct 122.9 196403 30 Nov 156.5 198907 30 Dec 183.4 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 .0 1.3 197311 * .0 Trace 30 Feb .0 8.1 198805 .5 .0 Trace 30 Mar .0 Trace 198905 Trace .0 .0 30 Apr .0 .0 199030 .0 .0 .0 30 May .0 .0 199031 .0 .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 .0 199031 .0 .0 .0 30 Nov .0 Trace 197628 Trace .0 .0 30 Dec .0 Trace 198922 Trace .0 .0 30 Annual NA NA NA .5 NA NA NA Ann-NCDC NA NA NA NA 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 80.8 83.5 84.8 79.1 64.0 58.6 65.9 75.7 74.1 Feb 78.5 82.5 84.1 76.0 59.3 54.0 60.5 72.1 70.9 Mar 79.4 83.9 85.7 72.9 56.7 52.0 57.9 71.8 70.0 Apr 81.9 86.4 88.0 70.1 55.0 51.3 58.0 74.0 70.6 May 84.2 88.8 89.9 69.8 56.3 53.7 60.1 76.0 72.3 Jun 85.5 89.7 90.8 70.7 58.6 57.0 64.2 78.3 74.4 Jul 87.2 90.3 91.4 73.6 62.3 61.8 69.4 81.6 77.2 Aug 88.0 90.7 91.9 74.9 61.9 61.7 70.0 82.6 77.7 Sep 87.4 89.9 91.0 74.9 60.4 59.0 69.7 82.8 76.9 Oct 85.2 87.7 88.5 71.9 53.9 50.1 65.3 79.5 72.8 Nov 85.0 87.3 88.2 76.6 58.3 53.9 68.2 79.7 74.6 Dec 82.1 84.9 86.0 79.0 62.4 57.5 68.0 77.5 74.7 Annual 83.8 87.2 88.4 74.1 59.1 55.9 64.8 77.7 73.9 Ann-NCDC 83.8 87.1 88.4 74.1 59.1 55.9 64.8 77.6 73.8 ---------------------------------------------------------------------------------- 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 1021.4 30 Feb 1019.7 30 Mar 1017.4 30 Apr 1016.5 30 May 1015.5 30 Jun 1015.7 30 Jul 1017.1 30 Aug 1016.5 30 Sep 1016.0 30 Oct 1018.4 30 Nov 1019.5 30 Dec 1020.8 30 Annual 1017.9 30 Ann-NCDC 1017.9 NA -------------------------- Element 16: Wind Speed (m/sec) MN3HRLY (Statistic 94): Mean of 3-Hourly Observations ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 4.1 Feb 4.3 Mar 4.4 Apr 4.1 May 3.6 Jun 3.1 Jul 2.8 Aug 2.6 Sep 3.1 Oct 3.1 Nov 3.6 Dec 3.9 Annual 3.6 Ann-NCDC 3.6 ------------------ 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 .080 .073 .070 .060 .060 .090 .074 .047 .062 Feb .069 .063 .060 .065 .065 .071 .057 .051 .069 Mar .074 .047 .049 .052 .056 .089 .089 .074 .097 Apr .068 .041 .052 .053 .058 .086 .097 .098 .118 May .102 .046 .059 .064 .065 .088 .089 .081 .094 Jun .119 .043 .064 .062 .064 .071 .074 .063 .078 Jul .148 .038 .049 .054 .059 .056 .048 .044 .055 Aug .175 .055 .070 .068 .071 .067 .056 .042 .043 Sep .128 .092 .107 .103 .095 .084 .060 .037 .033 Oct .152 .076 .089 .088 .082 .092 .066 .036 .032 Nov .118 .060 .065 .067 .070 .094 .084 .059 .057 Dec .111 .063 .064 .060 .066 .087 .075 .063 .062 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 .027 .030 .033 .032 .033 .053 .071 .105 Feb .038 .046 .042 .041 .039 .058 .070 .095 Mar .049 .044 .038 .038 .034 .052 .055 .063 Apr .049 .049 .036 .035 .027 .039 .038 .056 May .046 .044 .033 .034 .026 .037 .036 .057 Jun .046 .069 .062 .052 .030 .027 .028 .049 Jul .035 .081 .090 .085 .052 .040 .025 .041 Aug .024 .043 .055 .059 .039 .039 .036 .059 Sep .015 .020 .025 .023 .020 .028 .042 .089 Oct .010 .016 .019 .025 .024 .039 .056 .098 Nov .023 .021 .022 .028 .029 .050 .064 .090 Dec .024 .026 .027 .029 .029 .055 .067 .093 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 360.0 30 Feb 360.0 30 Mar 180.0 30 Apr 180.0 30 May 180.0 30 Jun 180.0 30 Jul 247.5 30 Aug 90.0 30 Sep 45.0 30 Oct 360.0 30 Nov 112.5 30 Dec 360.0 30 Annual 112.5 NA Ann-NCDC NA NA -------------------------- Element 51: Number Days with Thunder (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 1.7 Feb 3.5 Mar 4.5 Apr 4.7 May 5.9 Jun 9.6 Jul 14.9 Aug 13.0 Sep 7.0 Oct 2.4 Nov 2.5 Dec 2.3 Annual 72.0 Ann-NCDC 72.0 ------------------ Element 61: Number Days with Haze/Smoke (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 14.3 Feb 13.9 Mar 16.2 Apr 15.8 May 20.0 Jun 19.3 Jul 19.8 Aug 22.5 Sep 18.1 Oct 16.1 Nov 14.7 Dec 13.7 Annual 204.4 Ann-NCDC 204.4 ------------------ 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 .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: 1961 1961 eyr: 1990 1990 Qualifier: 10.0 35.0 Month -------------------------- Jan 24.5 .0 Feb 25.1 .0 Mar 30.6 .0 Apr 30.0 .0 May 31.0 .3 Jun 30.0 3.5 Jul 31.0 3.9 Aug 31.0 3.2 Sep 30.0 .9 Oct 31.0 .0 Nov 29.4 .0 Dec 27.4 .0 Annual 351.0 11.8 Ann-NCDC 351.0 11.8 -------------------------- 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 9.3 25.2 Feb 5.1 22.1 Mar 1.1 16.6 Apr * 6.7 May .0 .6 Jun .0 .0 Jul .0 .0 Aug .0 .0 Sep .0 .4 Oct .0 9.1 Nov 1.6 17.5 Dec 6.4 23.5 Annual 23.5 121.7 Ann-NCDC 23.5 121.7 -------------------------- 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 8.7 Feb 7.7 Mar 7.7 Apr 5.8 May 6.5 Jun 8.3 Jul 11.3 Aug 10.1 Sep 8.2 Oct 4.5 Nov 6.4 Dec 8.2 Annual 93.4 Ann-NCDC 93.4 ------------------ Element 97: Number Days with Freezing Rain/Drizzle (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan .0 Feb .1 Mar .0 Apr .0 May .0 Jun .0 Jul .0 Aug .0 Sep .0 Oct .0 Nov .0 Dec .0 Annual .1 Ann-NCDC 0.1 ------------------ 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 * Oct .0 Nov .0 Dec .0 Annual * Ann-NCDC * ------------------ Element AA: Number Days with Rain/Drizzle (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 14.1 Feb 11.8 Mar 13.0 Apr 10.6 May 11.2 Jun 13.2 Jul 17.3 Aug 16.2 Sep 12.6 Oct 7.5 Nov 10.9 Dec 13.5 Annual 151.9 Ann-NCDC 151.9 ------------------ Element AB: Number Days with Snow/Hail (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 1.3 Feb .6 Mar .2 Apr .0 May .0 Jun .0 Jul .0 Aug .0 Sep .0 Oct .0 Nov * Dec .2 Annual 2.3 Ann-NCDC 2.3 ------------------ Element AC: Number Days with Fog/Mist (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 17.6 Feb 13.6 Mar 17.2 Apr 17.8 May 21.0 Jun 18.1 Jul 17.9 Aug 20.5 Sep 19.8 Oct 17.7 Nov 17.0 Dec 17.3 Annual 215.5 Ann-NCDC 215.5 ------------------ 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 ------------------