Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS43 KLOT 220637
CLIMDW
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
137 AM CDT FRI AUG 22 2025
...................................
...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR AUGUST 21 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1928 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 78 1:48 PM 99 1955 82 -4 76
MINIMUM 66 5:16 AM 46 1950 66 0 57
AVERAGE 72 74 -2 67
PRECIPITATION (IN)
YESTERDAY 0.00 1.58 1975 0.13 -0.13 0.00
MONTH TO DATE 2.81 2.72 0.09 2.86
SINCE JUN 1 14.84 10.28 4.56 12.61
SINCE JAN 1 24.41 22.76 1.65 28.59
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 9 25 -16 3
SINCE JUL 1 0 1 -1 0
COOLING
YESTERDAY 7 9 -2 2
MONTH TO DATE 283 214 69 199
SINCE JUN 1 1051 789 262 873
SINCE JAN 1 1102 871 231 986
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NE (40)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION NE (40)
AVERAGE WIND SPEED 8.2
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 6:00 AM
LOWEST 58 2:00 PM
AVERAGE 73
..........................................................
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 82 103 1936
MINIMUM TEMPERATURE (F) 66 51 1928
SUNRISE AND SUNSET
AUGUST 22 2025........SUNRISE 6:07 AM CDT SUNSET 7:40 PM CDT
AUGUST 23 2025........SUNRISE 6:08 AM CDT SUNSET 7:38 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$