Climatological Report (Monthly)
Issued by NWS St Louis, MO
Issued by NWS St Louis, MO
328
CXUS53 KLSX 011508
CLMCOU
CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1008 AM CDT THU OCT 01 2026
...................................
...THE COLUMBIA ASOS CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2026...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1890 TO 2026
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 100 09/05 97
LOWEST 54 09/25 45
09/24
AVG. MAXIMUM 87.2 80.1 7.1 84.0
AVG. MINIMUM 66.7 58.3 8.4 59.4
MEAN 77.0 69.2 7.8 71.7
DAYS MAX >= 90 16 3.0 13.0 7
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 1.57 3.83 -2.26 2.06
DAILY AVG. 0.05 0.13 -0.08 0.07
DAYS >= .01 4 7.3 -3.3 8
DAYS >= .10 2 5.2 -3.2 6
DAYS >= .50 2 2.6 -0.6 1
DAYS >= 1.00 0 1.3 -1.3 0
GREATEST
24 HR. TOTAL 1.55 09/09 TO 09/10
SNOWFALL (INCHES)
RECORDS
TOTAL 0.0
24 HR TOTAL 0.0
TOTALS 0.0 0.0 0.0 0.0
SINCE 7/1 0.0 0.0 0.0 0.0
DAYS >= 1.0 0 0
GREATEST
SNOW DEPTH 0
24 HR TOTAL 0.0
DEGREE DAYS
HEATING TOTAL 6 47 -41
SINCE 7/1 6 48 -42
COOLING TOTAL 371 173 198
SINCE 1/1 1650 1411 239
..............................................................
WIND (MPH)
HIGHEST WIND SPEED/DIRECTION 33/270 DATE 09/09
HIGHEST GUST SPEED/DIRECTION 57/260 DATE 09/09
SKY COVER
NUMBER OF DAYS FAIR 20
NUMBER OF DAYS PC 6
NUMBER OF DAYS CLOUDY 4
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 3 MIXED PRECIP 0
HEAVY RAIN 1 RAIN 2
LIGHT RAIN 8 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 6 FOG W/VIS <= 1/4 MILE 0
HAZE 0
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
...MONTHLY...
RECORD WARMEST SEPTEMBER ON RECORD (77.0 DEGREES. PREVIOUS 75.8
DEGREES IN 2019 AND 1897).
TIED 2ND MOST DAYS WITH A HIGH TEMPERATURE GREATER THAN OR EQUAL TO
90 DEGREES (16 DAYS).
TIED MOST DAYS WITH A LOW TEMPERATURE GREATER THAN OR EQUAL TO 70
DEGREES (13 DAYS. ALSO SET IN 1895).
...DAILY...
4 RECORD HIGH MINIMUM TEMPERATURES SET OR TIED (09/30, 09/05, 09/04,
AND 09/03).
$$
GOSSELIN