060
CDUS43 KLSX 182227
CLISTL
CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
427 PM CST THU DEC 18 2025
...............................
..THE ST. LOUIS CLIMATE SUMMARY FOR DECEMBER 18 2025
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1874 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 57 1132 AM 69 1877 44 13 46
1939
MINIMUM 44 337 PM -4 1884 28 16 30
1983
AVERAGE 51 36 15 38
PRECIPITATION (IN)
TODAY 0.45 2.78 1924 0.07 0.38 T
MONTH TO DATE 0.74 1.40 -0.66 1.71
SINCE DEC 1 0.74 1.40 -0.66 1.71
SINCE JAN 1 38.76 40.60 -1.84 49.64
SNOWFALL (IN)
TODAY 0.0 5.2 1929 0.1 -0.1 0.0
MONTH TO DATE 3.8 1.5 2.3 0.4
SINCE DEC 1 3.8 1.5 2.3 0.4
SINCE JUL 1 10.2 2.4 7.8 3.6
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 14 29 -15 27
MONTH TO DATE 591 484 107 480
SINCE DEC 1 591 484 107 480
SINCE JUL 1 1253 1306 -53 1014
COOLING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 1904 1713 191 2057
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION S (170)
HIGHEST GUST SPEED 37 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 14.9
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 1200 PM
LOWEST 77 1200 AM
AVERAGE 87
......................................................
THE ST. LOUIS CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 44 68 1877
1889
1976
MINIMUM TEMPERATURE (F) 28 -7 1884
1983
SUNRISE AND SUNSET
DECEMBER 18 2025......SUNRISE 715 AM CST SUNSET 442 PM CST
DECEMBER 19 2025......SUNRISE 715 AM CST SUNSET 443 PM CST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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