Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS43 KLOT 212133
CLIMDW
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
433 PM CDT THU AUG 21 2025
...................................
...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR AUGUST 21 2025...
VALID TODAY AS OF 0400 PM LOCAL TIME.
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)
TODAY
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)
TODAY 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
TODAY 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
TODAY 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 8.9
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
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 TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 82 103 1936
MINIMUM TEMPERATURE (F) 66 51 1928
SUNRISE AND SUNSET
AUGUST 21 2025........SUNRISE 6:06 AM CDT SUNSET 7:41 PM CDT
AUGUST 22 2025........SUNRISE 6:07 AM CDT SUNSET 7:40 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$