723
CDUS43 KLSX 170833
CLISTL
CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
233 AM CST WED DEC 17 2025
...............................
..THE ST. LOUIS CLIMATE SUMMARY FOR DECEMBER 16 2025
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)
YESTERDAY
MAXIMUM 57 338 PM 71 2021 44 13 67
MINIMUM 23 324 AM -8 1989 28 -5 39
AVERAGE 40 36 4 53
PRECIPITATION (IN)
YESTERDAY 0.00 1.16 2001 0.07 -0.07 0.05
MONTH TO DATE 0.29 1.25 -0.96 1.60
SINCE DEC 1 0.29 1.25 -0.96 1.60
SINCE JAN 1 38.31 40.45 -2.14 49.53
SNOWFALL (IN)
YESTERDAY 0.0 2.4 2019 0.1 -0.1 0.0
MONTH TO DATE 3.8 1.3 2.5 0.4
SINCE DEC 1 3.8 1.3 2.5 0.4
SINCE JUL 1 10.2 2.2 8.0 3.6
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 25 29 -4 12
MONTH TO DATE 557 426 131 433
SINCE DEC 1 557 426 131 433
SINCE JUL 1 1219 1248 -29 967
COOLING
YESTERDAY 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
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WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 7.0
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 77 500 AM
LOWEST 35 100 PM
AVERAGE 56
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THE ST. LOUIS CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 44 72 1908
MINIMUM TEMPERATURE (F) 28 -3 1875
SUNRISE AND SUNSET
DECEMBER 17 2025......SUNRISE 714 AM CST SUNSET 442 PM CST
DECEMBER 18 2025......SUNRISE 715 AM CST SUNSET 442 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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