917
CDUS43 KLSX 182240
CLISTL
CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
540 PM CDT MON MAY 18 2026
...............................
..THE ST. LOUIS CLIMATE SUMMARY FOR MAY 18 2026
VALID AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1874 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 79 657 AM 94 1996 78 1 79
MINIMUM 66 357 PM 39 2002 59 7 60
AVERAGE 73 68 5 70
PRECIPITATION (IN)
TODAY 1.71 2.38 1890 0.15 1.56 0.00
MONTH TO DATE 3.31 2.89 0.42 1.91
SINCE MAR 1 15.35 11.12 4.23 15.67
SINCE JAN 1 17.77 15.94 1.83 19.66
SNOWFALL (IN)
TODAY MM 0.0 2015 0.0 MM 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE MAR 1 T 2.5 -2.5 0.3
SINCE JUL 1 18.5 16.6 1.9 18.6
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 0 2 -2 0
MONTH TO DATE 68 55 13 45
SINCE MAR 1 562 893 -331 597
SINCE JUL 1 3862 4412 -550 3822
COOLING
TODAY 8 5 3 5
MONTH TO DATE 49 65 -16 63
SINCE MAR 1 191 109 82 129
SINCE JAN 1 191 110 81 129
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION NW (320)
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION NW (330)
AVERAGE WIND SPEED 9.1
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
THUNDERSTORM
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 400 PM
LOWEST 66 100 AM
AVERAGE 82
......................................................
THE ST. LOUIS CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 94 1996
MINIMUM TEMPERATURE (F) 59 40 1894
SUNRISE AND SUNSET
MAY 18 2026...........SUNRISE 547 AM CDT SUNSET 810 PM CDT
MAY 19 2026...........SUNRISE 546 AM CDT SUNSET 811 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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