780
CDUS43 KLSX 202229
CLISTL
CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
529 PM CDT TUE MAY 20 2025
...............................
..THE ST. LOUIS CLIMATE SUMMARY FOR MAY 20 2025
VALID AS OF 0500 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 83 253 PM 93 1902 78 5 87
MINIMUM 66 555 AM 41 1894 59 7 73
1981
AVERAGE 75 69 6 80
PRECIPITATION (IN)
TODAY 0.03 1.66 1947 0.15 -0.12 0.00
MONTH TO DATE 3.42 3.19 0.23 3.38
SINCE MAR 1 17.18 11.42 5.76 13.70
SINCE JAN 1 21.17 16.24 4.93 18.13
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 MAR 1 0.3 2.5 -2.2 T
SINCE JUL 1 18.6 16.6 2.0 9.3
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 0 2 -2 0
MONTH TO DATE 45 59 -14 2
SINCE MAR 1 597 897 -300 545
SINCE JUL 1 3822 4416 -594 3351
COOLING
TODAY 10 6 4 15
MONTH TO DATE 85 76 9 132
SINCE MAR 1 151 120 31 220
SINCE JAN 1 151 121 30 220
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION W (250)
HIGHEST GUST SPEED 35 HIGHEST GUST DIRECTION SW (240)
AVERAGE WIND SPEED 12.2
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
THUNDERSTORM
LIGHT RAIN
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) 79 93 1941
MINIMUM TEMPERATURE (F) 60 38 1883
SUNRISE AND SUNSET
MAY 20 2025...........SUNRISE 545 AM CDT SUNSET 812 PM CDT
MAY 21 2025...........SUNRISE 544 AM CDT SUNSET 812 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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