Climatological Report (Monthly)
Issued by NWS
Issued by NWS
705 CXUS52 KKEY 041611 CLMMTH CLIMATE REPORT NATIONAL WEATHER SERVICE KEY WEST FL 1111 AM EST THU JAN 4 2024 ................................... ...THE MARATHON CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2023... CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 1950 TO 2024 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 88 12/04/2018 12/19/2016 12/18/2016 LOW 37 12/25/1989 12/24/1989 HIGHEST 87 12/03 85 12/01 12/31 LOWEST 55 12/31 50 12/26 AVG. MAXIMUM 76.3 77.9 -1.6 79.2 AVG. MINIMUM 66.9 67.5 -0.6 68.8 MEAN 71.6 72.7 -1.1 74.0 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX <= 32 0 0.0 0.0 0 DAYS MIN <= 32 0 0.0 0.0 0 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 7.94 2015 MINIMUM 0.19 2005 1999 TOTALS 8.58R 2.20 6.38 3.24 DAILY AVG. 0.28 0.07 0.21 0.10 DAYS >= .01 12 8.3 3.7 10 DAYS >= .10 9 3.3 5.7 6 DAYS >= .50 6 1.3 4.7 2 DAYS >= 1.00 3 0.6 2.4 1 GREATEST 24 HR. TOTAL 4.23 12/25 TO 12/26 DEGREE DAYS HEATING TOTAL 3 17 -14 28 SINCE 7/1 3 18 -15 28 COOLING TOTAL 214 256 -42 316 SINCE 1/1 6084 5127 957 5798 ................................................................ WIND (MPH) AVERAGE WIND SPEED 10.0 HIGHEST WIND SPEED/DIRECTION 30/050 DATE 12/13 30/050 12/14 HIGHEST GUST SPEED/DIRECTION 49/140 DATE 12/16 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.38 NUMBER OF DAYS FAIR 16 NUMBER OF DAYS PC 11 NUMBER OF DAYS CLOUDY 4 AVERAGE RH (PERCENT) 81 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 4 MIXED PRECIP 0 HEAVY RAIN 8 RAIN 9 LIGHT RAIN 11 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 1 SLEET 0 FOG 10 FOG W/VIS <= 1/4 MILE 3 HAZE 9 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$ MARATHON DAILY RECORDS, DECEMBER 2023 AND 2023 RECORD DEC 2023 2023 ====== ======== ======== MAXIMUM TEMPERATURE 2 84 COOL MAXIMUM TEMPERATURE 0 1 WARM MINIMUM TEMPERATURE 1 54 MINIMUM TEMPERATURE 0 0 RAINFALL 2 10 TOP 10 WETTEST DECEMBERS ON RECORD FOR MARATHON RANKING YEAR TOTAL (IN.) ======= ==== =========== 1 2023 8.58 <--- 2 2015 7.94 3 1958 7.23 4 1997 6.21 5 2006 6.02 6 1986 5.95 7 1957 5.03 8 2019 4.59 9 1985 4.04 10 1959 3.93 TOP 10 WETTEST YEARS ON RECORD FOR MARATHON RANKING YEAR TOTAL (IN.) ======= ==== =========== 1 1959 70.09 2 2020 64.55 3 1958 63.70 4 1983 63.23 5 1953 57.16 6 2010 53.85 7 1969 52.90 8 2023 52.56 <--- 9 2013 52.34 10 1994 51.71 TOP 10 WARMEST YEARS ON RECORD FOR MARATHON RANKING YEAR AVERAGE (DEG F) ======= ==== =============== 1 2019 81.7 2 2023 81.4 <--- 3 2015 80.5 4 2022 80.4 2017 80.4 6 2020 80.1 2013 80.1 8 2002 79.7 9 2018 79.6 10 2011 79.5 ROSS