092
CXUS53 KLOT 021908 CCA
CLMORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1010 AM CDT THU MAY 01 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE MONTH OF APRIL 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2025
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
............................................................
TEMPERATURE (F)
RECORD
HIGH 91 04/22/1980
04/30/1942
LOW 7 04/07/1982
HIGHEST 84 04/28 81 04/14
04/16
LOWEST 25 04/08 32 04/06
AVG. MAXIMUM 60.0 59.0 1.0 61.6
AVG. MINIMUM 41.5 40.3 1.2 43.8
MEAN 50.8 49.7 1.1 52.7
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 2 6.0 -4.0 1
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 8.68 2013
MINIMUM 0.14 1899
TOTALS 2.66 3.75 -1.09 3.47
DAILY AVG. 0.09 0.12 -0.03 0.12
DAYS >= .01 10 12.3 -2.3 14
DAYS >= .10 5 7.1 -2.1 10
DAYS >= .50 2 2.5 -0.5 1
DAYS >= 1.00 1 0.8 0.2 0
GREATEST
24 HR. TOTAL 1.25 04/02 TO 04/02 0.82
SNOWFALL (INCHES)
RECORDS
TOTAL 13.6 1938
TOTALS T 1.3 -1.3 T
SINCE 7/1 17.6 38.4 -20.8 MM
SNOWDEPTH AVG. 0 0
DAYS >= 1.0 0 0.0 0.0 0
GREATEST
SNOW DEPTH 0 0 MM
24 HR TOTAL T 04/07 TO 04/07 T
04/09 TO 04/09
DEGREE DAYS
HEATING TOTAL 428 468 -40 371
SINCE 7/1 5193 5745 -552 MM
COOLING TOTAL 8 8 0 9
SINCE 1/1 8 10 -2 MM
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WIND (MPH)
AVERAGE WIND SPEED 11.2
HIGHEST WIND SPEED/DIRECTION 31/030 DATE 04/07
31/250 04/21
HIGHEST GUST SPEED/DIRECTION 46/220 DATE 04/21
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.70
NUMBER OF DAYS FAIR 3
NUMBER OF DAYS PC 14
NUMBER OF DAYS CLOUDY 13
AVERAGE RH (PERCENT) 63
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 4 MIXED PRECIP 0
HEAVY RAIN 2 RAIN 4
LIGHT RAIN 15 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 2 SLEET 1
FOG 14 FOG W/VIS <= 1/4 MILE 0
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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