Climatological Report (Daily)
Issued by NWS St Louis, MO
Issued by NWS St Louis, MO
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CDUS43 KLSX 202133
CLISTL
CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
433 PM CDT WED AUG 20 2025
...................................
...THE ST. LOUIS CLIMATE SUMMARY FOR AUGUST 20 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 86 233 PM 104 1962 88 -2 81
MINIMUM 72 630 AM 52 1950 69 3 63
AVERAGE 79 78 1 72
PRECIPITATION (IN)
TODAY 0.00 6.85 1915 0.11 -0.11 0.00
MONTH TO DATE 1.48 2.28 -0.80 1.06
SINCE JUN 1 10.44 10.70 -0.26 10.57
SINCE JAN 1 32.09 28.57 3.52 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 14 14 0 7
MONTH TO DATE 322 292 30 275
SINCE JUN 1 1275 1119 156 1206
SINCE JAN 1 1446 1314 132 1519
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION NE (50)
AVERAGE WIND SPEED 7.8
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 91 500 AM
LOWEST 51 300 PM
AVERAGE 71
..........................................................
THE ST. LOUIS CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 104 2003
MINIMUM TEMPERATURE (F) 69 50 1940
1950
SUNRISE AND SUNSET
AUGUST 20 2025........SUNRISE 620 AM CDT SUNSET 749 PM CDT
AUGUST 21 2025........SUNRISE 621 AM CDT SUNSET 747 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$