850
CXUS53 KLOT 012222 CCA
CLMMDW
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
425 AM CDT TUE SEP 01 2026
...............................
..THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2026
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1928 TO 2026
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
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TEMPERATURE (F)
RECORD
HIGH 104 08/09/1934
LOW 43 08/29/1965
HIGHEST 91 08/31 96 08/16
LOWEST 58 08/24 55 08/26
AVG. MAXIMUM 81.7 82.7 -1.0 82.9
AVG. MINIMUM 67.2 66.4 0.8 67.3
MEAN 74.4 74.5 -0.1 75.1
DAYS MAX >= 90 1 4.0 -3.0 6
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 9.95 1987
MINIMUM 0.71 2008
TOTALS 4.73 3.99 0.74 3.22
DAILY AVG. 0.15 0.13 0.02 0.10
DAYS >= .01 12 9.9 2.1 7
DAYS >= .10 12 6.4 5.6 6
DAYS >= .50 3 2.7 0.3 1
DAYS >= 1.00 1 1.0 0.0 1
GREATEST
24 HR. TOTAL 1.56 08/01 TO 08/01 1.58
DEGREE DAYS
HEATING TOTAL 0 3 -3 2
SINCE 7/1 0 1 -1 MM
COOLING TOTAL 300 299 1 322
SINCE 1/1 971 956 15 MM
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WIND (MPH)
AVERAGE WIND SPEED 7.7
HIGHEST WIND SPEED/DIRECTION 35/270 DATE 08/11
HIGHEST GUST SPEED/DIRECTION 53/260 DATE 08/11
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.62
NUMBER OF DAYS FAIR 7
NUMBER OF DAYS PC 12
NUMBER OF DAYS CLOUDY 12
AVERAGE RH (PERCENT) 74
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 10 MIXED PRECIP 0
HEAVY RAIN 5 RAIN 5
LIGHT RAIN 16 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 13 FOG W/VIS <= 1/4 MILE 0
HAZE 2
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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