Climatological Report (Monthly) Issued by NWS Chicago, IL
000
CXUS53 KLOT 011758
CLMRFD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1158 AM CST MON JAN 01 2024
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...THE ROCKFORD IL CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2023...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1905 TO 2023
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
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TEMPERATURE (F)
RECORD
HIGH 69 12/15/2021
12/03/2012
LOW -24 12/24/1983
HIGHEST 57 12/08 61 12/29
12/25
LOWEST 12 12/19 -10 12/22
12/23
AVG. MAXIMUM 42.3 34.3 8.0 34.5
AVG. MINIMUM 30.4 20.2 10.2 18.1
MEAN 36.3 27.3 9.0 26.3
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 1 12.0 -11.0 12
DAYS MIN <= 32 16 27.3 -11.3 24
DAYS MIN <= 0 0 2.4 -2.4 5
PRECIPITATION (INCHES)
RECORD
MAXIMUM 5.04 1971
MINIMUM 0.17 1907
TOTALS 3.13 1.93 1.20 2.56
DAILY AVG. 0.10 0.06 0.04 0.08
DAYS >= .01 12 9.8 2.2 8
DAYS >= .10 8 4.6 3.4 3
DAYS >= .50 2 1.2 0.8 2
DAYS >= 1.00 0 0.3 -0.3 1
GREATEST
24 HR. TOTAL 0.73 12/08 TO 12/09 1.73
SNOWFALL (INCHES)
RECORDS
TOTAL 30.1 2000
TOTALS 2.8 9.4 -6.6 3.3
SINCE 7/1 4.3 11.9 -7.6 MM
SNOWDEPTH AVG. 0 1
DAYS >= 1.0 1 3.0 -2.0 1
GREATEST
SNOW DEPTH 1 12/05 2 12/26
12/27
12/28
24 HR TOTAL 2.8 1.5
DEGREE DAYS
HEATING TOTAL 883 1170 -287 1196
SINCE 7/1 2100 2486 -386 MM
COOLING TOTAL 0 0 0 0
SINCE 1/1 805 839 -34 MM
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WIND (MPH)
AVERAGE WIND SPEED 7.8
HIGHEST WIND SPEED/DIRECTION 33/310 DATE 12/18
HIGHEST GUST SPEED/DIRECTION 48/320 DATE 12/18
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.77
NUMBER OF DAYS FAIR 4
NUMBER OF DAYS PC 7
NUMBER OF DAYS CLOUDY 20
AVERAGE RH (PERCENT) 79
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 4
LIGHT RAIN 15 FREEZING RAIN 0
LT FREEZING RAIN 3 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 12 SLEET 1
FOG 19 FOG W/VIS <= 1/4 MILE 2
HAZE 0
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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