138
CDUS43 KLSX 122228
CLISTL
CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
528 PM CDT FRI SEP 12 2025
...............................
..THE ST. LOUIS CLIMATE SUMMARY FOR SEPTEMBER 12 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 93 250 PM 98 1897 83 10 83
1936
1956
MINIMUM 64 549 AM 44 1940 62 2 62
AVERAGE 79 72 7 73
PRECIPITATION (IN)
TODAY 0.00 2.10 1949 0.11 -0.11 0.00
MONTH TO DATE 0.17 1.27 -1.10 0.00
SINCE SEP 1 0.17 1.27 -1.10 0.00
SINCE JAN 1 32.26 30.94 1.32 31.68
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 0 0 0
MONTH TO DATE 4 0 4 3
SINCE SEP 1 4 0 4 3
SINCE JUL 1 4 1 3 3
COOLING
TODAY 14 8 6 8
MONTH TO DATE 69 113 -44 85
SINCE SEP 1 69 113 -44 85
SINCE JAN 1 1590 1563 27 1793
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SE (130)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION SE (130)
AVERAGE WIND SPEED 4.9
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 84 600 AM
LOWEST 35 200 PM
AVERAGE 60
......................................................
THE ST. LOUIS CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 82 100 1939
MINIMUM TEMPERATURE (F) 62 43 1975
SUNRISE AND SUNSET
SEPTEMBER 12 2025.....SUNRISE 641 AM CDT SUNSET 714 PM CDT
SEPTEMBER 13 2025.....SUNRISE 642 AM CDT SUNSET 712 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