485
CDUS43 KLSX 202129
CLICOU
CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
429 PM CDT SAT SEP 20 2025
...............................
..THE COLUMBIA ASOS CLIMATE SUMMARY FOR SEPTEMBER 20 2025
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1890 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 86 249 PM 98 1893 79 7 94
2022
MINIMUM 62 604 AM 36 1918 57 5 70
1991
AVERAGE 74 68 6 82
PRECIPITATION (IN)
TODAY 0.00 1.72 1944 0.12 -0.12 0.00
MONTH TO DATE 1.02 2.57 -1.55 T
SINCE SEP 1 1.02 2.57 -1.55 T
SINCE JAN 1 27.61 31.93 -4.32 35.14
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 2 -2 0
MONTH TO DATE 11 15 -4 10
SINCE SEP 1 11 15 -4 10
SINCE JUL 1 12 16 -4 10
COOLING
TODAY 9 5 4 17
MONTH TO DATE 164 138 26 142
SINCE SEP 1 164 138 26 142
SINCE JAN 1 1316 1376 -60 1403
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 5.3
SKY COVER
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 500 AM
LOWEST 49 300 PM
AVERAGE 73
......................................................
THE COLUMBIA ASOS CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 100 1893
MINIMUM TEMPERATURE (F) 56 35 1897
1983
SUNRISE AND SUNSET
SEPTEMBER 20 2025.....SUNRISE 655 AM CDT SUNSET 708 PM CDT
SEPTEMBER 21 2025.....SUNRISE 656 AM CDT SUNSET 707 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