Climatological Report (Monthly)
Issued by NWS St Louis, MO
Issued by NWS St Louis, MO
436
CXUS53 KLSX 011335
CLMCOU
CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
835 AM CDT WED OCT 01 2025
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...THE COLUMBIA ASOS CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1890 TO 2025
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE
NORMAL
..............................................................
TEMPERATURE (F)
RECORD
HIGH 104 09/14/1893
LOW 26 09/30/1895
HIGHEST 97 09/13 94
LOWEST 45 09/07 45
AVG. MAXIMUM 84.0 80.1 3.9 81.6
AVG. MINIMUM 59.4 58.3 1.1 59.2
MEAN 71.7 69.2 2.5 70.4
DAYS MAX >= 90 7 3.0 4.0 3
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.0 0.0 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 13.34 1945
MINIMUM 0.30 1960
TOTALS 2.06 3.83 -1.77 3.52
DAILY AVG. 0.07 0.13 -0.06 0.12
DAYS >= .01 8 7.3 0.7 4
DAYS >= .10 6 5.2 0.8 2
DAYS >= .50 1 2.6 -1.6 2
DAYS >= 1.00 0 1.3 -1.3 2
GREATEST
24 HR. TOTAL 0.61 09/23 TO 09/24
SNOWFALL (INCHES)
RECORDS
TOTAL MM MM
24 HR TOTAL MM
TOTALS 0.0 0.0 0.0 0.0
SINCE 7/1 0.0 0.0 0.0 MM
DAYS >= 1.0 0 0
GREATEST
SNOW DEPTH 0
24 HR TOTAL MM
DEGREE DAYS
HEATING TOTAL 11 47 -36 11
SINCE 7/1 12 46 -34 MM
COOLING TOTAL 221 173 48 181
SINCE 1/1 1373 1411 -38 MM
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WIND (MPH)
HIGHEST WIND SPEED/DIRECTION 35/260 DATE 09/18
HIGHEST GUST SPEED/DIRECTION 51/280 DATE 09/18
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
NUMBER OF DAYS FAIR 22
NUMBER OF DAYS PC 7
NUMBER OF DAYS CLOUDY 1
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 5 MIXED PRECIP 0
HEAVY RAIN 2 RAIN 5
LIGHT RAIN 9 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 9 FOG W/VIS <= 1/4 MILE 1
HAZE 3
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
...MONTHLY...
NO RECORDS OF NOTE.
...DAILY...
NO RECORDS OF NOTE.
$$