630
CXUS53 KLOT 012227 CCA
CLMORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
425 AM CDT TUE SEP 01 2026
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2026
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2026
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
............................................................
TEMPERATURE (F)
RECORD
HIGH 102 08/05/1918
LOW 42 08/28/1986
HIGHEST 87 08/07 95 08/09
08/10 08/16
08/31
LOWEST 58 08/24 54 08/26
08/31
AVG. MAXIMUM 81.6 82.5 -0.9 81.6
AVG. MINIMUM 66.8 65.1 1.7 65.0
MEAN 74.2 73.8 0.4 73.3
DAYS MAX >= 90 0 4.0 -4.0 5
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 17.10 1987
MINIMUM 0.18 1893
TOTALS 5.02 4.25 0.77 5.03
DAILY AVG. 0.16 0.14 0.02 0.16
DAYS >= .01 10 9.4 0.6 8
DAYS >= .10 8 6.5 1.5 7
DAYS >= .50 3 2.7 0.3 3
DAYS >= 1.00 2 1.2 0.8 2
GREATEST
24 HR. TOTAL 1.85 08/01 TO 08/01 2.28
DEGREE DAYS
HEATING TOTAL 0 4 -4 5
SINCE 7/1 0 2 -2 MM
COOLING TOTAL 293 277 16 269
SINCE 1/1 926 872 54 MM
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WIND (MPH)
AVERAGE WIND SPEED 7.3
HIGHEST WIND SPEED/DIRECTION 30/200 DATE 08/09
HIGHEST GUST SPEED/DIRECTION 44/190 DATE 08/09
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.62
NUMBER OF DAYS FAIR 6
NUMBER OF DAYS PC 14
NUMBER OF DAYS CLOUDY 11
AVERAGE RH (PERCENT) 73
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 8 MIXED PRECIP 0
HEAVY RAIN 5 RAIN 6
LIGHT RAIN 17 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 0
HAZE 5
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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