CXUS53 KLSX 012227 CLMSTL CLIMATE REPORT NATIONAL WEATHER SERVICE ST LOUIS MO 427 PM CST THU JAN 01 2026 ................................... ...THE ST. LOUIS CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2025... CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 1874 TO 2025 WEATHER OBSERVED NORMAL DEPART LAST YEAR'S VALUE DATE(S) VALUE FROM VALUE NORMAL .............................................................. TEMPERATURE (F) RECORD HIGH 78 12/28/2025 LOW -16 12/22/1989 HIGHEST 78R 12/28 67 LOWEST 7 12/14 17 AVG. MAXIMUM 46.1 44.5 1.6 48.5 AVG. MINIMUM 26.1 28.5 -2.4 32.9 MEAN 36.1 36.5 -0.4 40.7 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX <= 32 5 4.7 0.3 2 DAYS MIN <= 32 24 20.4 3.6 15 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 11.74 2015 MINIMUM 0.03 1955 TOTALS 0.74 2.50 -1.76 2.88 DAILY AVG. 0.02 0.08 -0.06 0.09 DAYS >= .01 2 9.0 -7.0 14 DAYS >= .10 2 5.2 -3.2 8 DAYS >= .50 0 1.3 -1.3 1 DAYS >= 1.00 0 0.4 -0.4 1 GREATEST 24 HR. TOTAL 0.45 12/18 SNOWFALL (INCHES) RECORDS TOTAL 26.3 1973 24 HR TOTAL 12.0 12/19/1973 TO 12/19/1973 TOTALS 3.8 3.2 0.6 SINCE 7/1 10.2 4.1 6.1 DAYS >= 1.0 1 GREATEST SNOW DEPTH 5 12/02 24 HR TOTAL 3.8 12/01 TO 12/01 DEGREE DAYS HEATING TOTAL 887 884 3 SINCE 7/1 1549 1705 -157 COOLING TOTAL 0 0 0 SINCE 1/1 1904 1713 191 .............................................................. WIND (MPH) HIGHEST WIND SPEED/DIRECTION 38/280 DATE 12/29 38/280 12/28 HIGHEST GUST SPEED/DIRECTION 56/280 DATE 12/29 SKY COVER NUMBER OF DAYS FAIR 4 NUMBER OF DAYS PC 13 NUMBER OF DAYS CLOUDY 14 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 0 HEAVY RAIN 1 RAIN 1 LIGHT RAIN 4 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 1 SNOW 1 LIGHT SNOW 9 SLEET 0 FOG 11 FOG W/VIS <= 1/4 MILE 2 HAZE 0 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. ...MONTHLY... 12TH DRIEST DECEMBER ON RECORD (0.74 INCHES). TIED 2ND LEAST DAYS WITH MEASURABLE PRECIPITATION (2 DAYS). ...DAILY... RECORD HIGH OF 78 DEGREES SET ON 12/28. PREVIOUS 75 IN 1928. -- THIS WAS ALSO THE WARMEST TEMPERATURE DURING THE MONTH OF DECEMBER. PREVIOUS WAS 76 DEGREES, LAST SET ON 12/3/2021. RECORD SNOWFALL VALUE OF 3.8 INCHES SET ON 12/01. PREVIOUS 3.5 IN 1937. $$ GOSSELIN