Climatological Report (Monthly)
Issued by NWS
Issued by NWS
435
CXUS53 KLSX 011335
CLMUIN
CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
835 AM CDT WED OCT 01 2025
...................................
...THE QUINCY IL CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1901 TO 2025
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE
NORMAL
..............................................................
TEMPERATURE (F)
RECORD
HIGH 105 09/04/1913
LOW 26 09/28/1942
HIGHEST 96 09/13 94
09/14
LOWEST 42 09/07 43
AVG. MAXIMUM 82.8 77.9 4.9 81.7
AVG. MINIMUM 57.1 56.1 1.0 57.9
MEAN 70.0 67.0 3.0 69.8
DAYS MAX >= 90 6 2.9 3.1 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 11.64 1926
MINIMUM 0.14 1939
TOTALS 1.01 3.09 -2.08 2.20
DAILY AVG. 0.03 0.10 -0.07 0.07
DAYS >= .01 6 7.5 -1.5 7
DAYS >= .10 2 4.8 -2.8 3
DAYS >= .50 0 2.0 -2.0 1
DAYS >= 1.00 0 0.7 -0.7 1
GREATEST
24 HR. TOTAL 0.48 09/21 TO 09/21
DEGREE DAYS
HEATING TOTAL 29 73 -44 13
SINCE 7/1 35 78 -43 MM
COOLING TOTAL 184 133 51 163
SINCE 1/1 1226 1129 97 MM
..............................................................
WIND (MPH)
HIGHEST WIND SPEED/DIRECTION 24/220 DATE 09/21
HIGHEST GUST SPEED/DIRECTION 43/260 DATE 09/18
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
NUMBER OF DAYS FAIR 25
NUMBER OF DAYS PC 5
NUMBER OF DAYS CLOUDY 0
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 5 MIXED PRECIP 0
HEAVY RAIN 2 RAIN 2
LIGHT RAIN 6 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 8 FOG W/VIS <= 1/4 MILE 0
HAZE 4
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
...MONTHLY...
10TH DRIEST SEPTEMBER ON RECORD (1.01 INCHES).
TIED 7TH LEAST OCCURRENCES WITH MORE THAN A TENTH OF AN INCH OF RAIN
(2 DAYS).
...DAILY...
RECORD LOW TEMPERATURE OF 42 DEGREES TIED ON 09/07. ALSO SET IN 1956.
$$