825
CDUS43 KLSX 182213
CLISTL
CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
513 PM CDT MON AUG 18 2025
...............................
..THE ST. LOUIS CLIMATE SUMMARY FOR AUGUST 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 97 259 PM 106 1936 88 9 86
MINIMUM 78 534 AM 54 1963 69 9 69
AVERAGE 88 79 9 78
PRECIPITATION (IN)
TODAY 0.00 2.10 1902 0.11 -0.11 0.00
MONTH TO DATE 1.44 2.06 -0.62 1.06
SINCE JUN 1 10.40 10.48 -0.08 10.57
SINCE JAN 1 32.05 28.35 3.70 31.36
SNOWFALL (IN)
TODAY 0.0 0.0 2015 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE JUN 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 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 0 4 -4 0
SINCE JUL 1 0 0 0 0
COOLING
TODAY 23 14 9 13
MONTH TO DATE 288 264 24 256
SINCE JUN 1 1241 1091 150 1187
SINCE JAN 1 1412 1286 126 1500
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION SE (150)
AVERAGE WIND SPEED 5.4
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 300 AM
LOWEST 46 400 PM
AVERAGE 67
......................................................
THE ST. LOUIS CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 105 1936
1962
MINIMUM TEMPERATURE (F) 69 55 1953
SUNRISE AND SUNSET
AUGUST 18 2025........SUNRISE 618 AM CDT SUNSET 751 PM CDT
AUGUST 19 2025........SUNRISE 619 AM CDT SUNSET 750 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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