Climatological Report (Monthly)
Issued by NWS St Louis, MO
Issued by NWS St Louis, MO
478
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