Climatological Report (Monthly)
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
028
CXUS53 KLOT 011319
CLMRFD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
819 AM CDT TUE OCT 01 2024
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...THE ROCKFORD IL CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2024...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1905 TO 2024
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
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TEMPERATURE (F)
RECORD
HIGH 103 09/07/1939
LOW 24 09/28/1942
HIGHEST 92 09/21 92 09/03
09/04
LOWEST 40 09/08 42 09/14
AVG. MAXIMUM 80.7 75.3 5.4 77.4
AVG. MINIMUM 53.3 53.5 -0.2 56.6
MEAN 67.0 64.4 2.6 67.0
DAYS MAX >= 90 2 2.0 0.0 2
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.3 -0.3 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 10.68 1961
MINIMUM 0.05 1979
TOTALS 2.05 3.62 -1.57 2.19
DAILY AVG. 0.07 0.12 -0.05 0.07
DAYS >= .01 2 8.4 -6.4 12
DAYS >= .10 2 5.4 -3.4 6
DAYS >= .50 2 2.3 -0.3 1
DAYS >= 1.00 1 1.0 0.0 0
GREATEST
24 HR. TOTAL 1.31 09/22 TO 09/22 0.68
DEGREE DAYS
HEATING TOTAL 37 107 -70 38
SINCE 7/1 46 116 -70 MM
COOLING TOTAL 106 89 17 104
SINCE 1/1 941 828 113 MM
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WIND (MPH)
AVERAGE WIND SPEED 5.3
HIGHEST WIND SPEED/DIRECTION 24/340 DATE 09/06
HIGHEST GUST SPEED/DIRECTION 36/010 DATE 09/27
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.42
NUMBER OF DAYS FAIR 16
NUMBER OF DAYS PC 9
NUMBER OF DAYS CLOUDY 5
AVERAGE RH (PERCENT) 68
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 1 MIXED PRECIP 0
HEAVY RAIN 2 RAIN 2
LIGHT RAIN 7 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 12 FOG W/VIS <= 1/4 MILE 1
HAZE 1
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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