220
CDUS43 KLSX 212128
CLISTL
CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
428 PM CDT TUE OCT 21 2025
...............................
..THE ST. LOUIS CLIMATE SUMMARY FOR OCTOBER 21 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 65 241 PM 88 1947 67 -2 78
1979
MINIMUM 51 637 AM 28 1952 47 4 49
AVERAGE 58 57 1 64
PRECIPITATION (IN)
TODAY 0.00 0.76 1949 0.11 -0.11 0.00
MONTH TO DATE 2.06 2.05 0.01 T
SINCE SEP 1 2.80 5.01 -2.21 5.75
SINCE JAN 1 34.89 34.68 0.21 37.43
SNOWFALL (IN)
TODAY 0.0 T 1937 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE SEP 1 0.0 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 7 9 -2 1
MONTH TO DATE 28 121 -93 81
SINCE SEP 1 32 153 -121 84
SINCE JUL 1 32 154 -122 84
COOLING
TODAY 0 1 -1 0
MONTH TO DATE 111 41 70 46
SINCE SEP 1 380 253 127 314
SINCE JAN 1 1901 1703 198 2022
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 32 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 44 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 14.3
SKY COVER
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 77 500 AM
LOWEST 28 100 PM
AVERAGE 53
......................................................
THE ST. LOUIS CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 67 86 1940
1947
2020
MINIMUM TEMPERATURE (F) 47 25 1976
SUNRISE AND SUNSET
OCTOBER 21 2025.......SUNRISE 717 AM CDT SUNSET 614 PM CDT
OCTOBER 22 2025.......SUNRISE 718 AM CDT SUNSET 613 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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