469
CDUS43 KLSX 172127
CLISTL
CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
427 PM CDT MON AUG 17 2026
...............................
..THE ST. LOUIS CLIMATE SUMMARY FOR AUGUST 17 2026
VALID TODAY AS OF 0400 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 84 256 PM 104 1936 89 -5 96
MINIMUM 72 605 AM 55 1879 70 2 76
AVERAGE 78 79 -1 86
PRECIPITATION (IN)
TODAY 0.00 1.89 1939 0.11 -0.11 1.12
MONTH TO DATE 3.47 1.95 1.52 1.44
SINCE JUN 1 17.42 10.37 7.05 10.40
SINCE JAN 1 36.09 28.24 7.85 32.05
SNOWFALL (IN)
TODAY 0.0 0.0 MM 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 13 14 -1 21
MONTH TO DATE 279 250 29 265
SINCE JUN 1 1112 1077 35 1218
SINCE JAN 1 1384 1272 112 1389
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION NW (320)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 8.1
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 100 AM
LOWEST 55 300 PM
AVERAGE 76
......................................................
THE ST. LOUIS CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 106 1936
MINIMUM TEMPERATURE (F) 69 54 1963
SUNRISE AND SUNSET
AUGUST 17 2026........SUNRISE 617 AM CDT SUNSET 753 PM CDT
AUGUST 18 2026........SUNRISE 618 AM CDT SUNSET 752 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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