509
CDUS43 KLSX 302129
CLISTL
CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
429 PM CDT TUE SEP 30 2025
...............................
..THE ST. LOUIS CLIMATE SUMMARY FOR SEPTEMBER 30 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 90 213 PM 93 1952 76 14 82
MINIMUM 62 609 AM 36 1949 55 7 65
AVERAGE 76 66 10 74
PRECIPITATION (IN)
TODAY 0.00 2.35 1986 0.09 -0.09 0.00
MONTH TO DATE 0.74 2.96 -2.22 5.75
SINCE SEP 1 0.74 2.96 -2.22 5.75
SINCE JAN 1 32.83 32.63 0.20 37.43
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 SEP 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 3 -3 0
MONTH TO DATE 4 30 -26 3
SINCE SEP 1 4 30 -26 3
SINCE JUL 1 4 31 -27 3
COOLING
TODAY 11 4 7 9
MONTH TO DATE 269 212 57 268
SINCE SEP 1 269 212 57 268
SINCE JAN 1 1790 1662 128 1976
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION NE (50)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION NE (40)
AVERAGE WIND SPEED 3.5
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 300 AM
LOWEST 29 300 PM
AVERAGE 58
......................................................
THE ST. LOUIS CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 94 2019
MINIMUM TEMPERATURE (F) 55 36 1939
1985
SUNRISE AND SUNSET
SEPTEMBER 30 2025.....SUNRISE 657 AM CDT SUNSET 645 PM CDT
OCTOBER 1 2025.......SUNRISE 658 AM CDT SUNSET 644 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page