898 CXUS52 KJAX 011820 CLMSSI CLIMATE REPORT NATIONAL WEATHER SERVICE JACKSONVILLE FL 120 PM EST WED JAN 01 2020 ................................... ...THE ST SIMONS ISLAND CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2019... CLIMATE NORMAL PERIOD: 1981 TO 2010 CLIMATE RECORD PERIOD: 1948 TO 2019 WEATHER OBSERVED NORMAL DEPART LAST YEAR'S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 84 12/15/1972 12/16/1971 LOW 12 12/25/1983 HIGHEST 81 12/01 63 18 74 12/31 LOWEST 36 12/19 46 -10 35 12/06 AVG. MAXIMUM 66.9 62.8 4.1 64.2 AVG. MINIMUM 51.6 45.4 6.2 49.0 MEAN 59.3 54.1 5.2 56.6 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX >= 97 0 MM DAYS MAX <= 50 0 MM DAYS MIN <= 32 0 2.5 -2.5 0 DAYS MIN >= 70 0 MM DAYS MIN <= 26 0 MM PRECIPITATION (INCHES) RECORD MAXIMUM 8.62 2018 MINIMUM 0.01 1984 TOTALS 8.38 2.64 5.74 8.62 DAILY AVG. 0.27 0.09 0.18 0.28 DAYS >= .01 12 7.7 4.3 11 DAYS >= .10 8 4.6 3.4 11 DAYS >= .50 5 1.9 3.1 6 DAYS >= 1.00 3 0.7 2.3 4 GREATEST 24 HR. TOTAL 4.46 12/22 TO 12/23 SNOWFALL (INCHES) RECORDS TOTAL 4.0 1989 TOTALS 0.0 0.2 -0.2 0.0 DEGREE DAYS HEATING TOTAL 190 351 -161 262 SINCE 7/1 376 531 -155 408 COOLING TOTAL 21 13 8 9 SINCE 1/1 3391 2628 763 3204 FREEZE DATES RECORD EARLIEST 11/03/1954 LATEST 03/31/1964 EARLIEST 01/01 LATEST 01/30 ................................................................ WIND (MPH) AVERAGE WIND SPEED 8.8 HIGHEST WIND SPEED/DIRECTION 32/020 DATE 12/24 HIGHEST GUST SPEED/DIRECTION 41/020 DATE 12/24 SKY COVER AVERAGE SKY COVER 0.46 AVERAGE RH (PERCENT) 75 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 2 MIXED PRECIP 0 HEAVY RAIN 6 RAIN 9 LIGHT RAIN 15 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 18 FOG W/VIS <= 1/4 MILE 6 HAZE 0 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$