Climatological Report (Daily)
Issued by NWS
Issued by NWS
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063
CDUS43 KLOT 152141
CLIMDW
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
441 PM CDT FRI AUG 15 2025
...................................
...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR AUGUST 15 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 91 2:59 PM 98 1944 83 8 77
MINIMUM 72 3:19 AM 48 1929 67 5 69
AVERAGE 82 75 7 73
PRECIPITATION (IN)
TODAY 0.00 2.07 1934 0.14 -0.14 0.18
MONTH TO DATE 0.35 1.92 -1.57 1.12
SINCE JUN 1 12.38 9.48 2.90 10.87
SINCE JAN 1 21.95 21.96 -0.01 26.85
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 17 10 7 8
MONTH TO DATE 207 157 50 155
SINCE JUN 1 975 732 243 829
SINCE JAN 1 1026 814 212 942
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION S (200)
AVERAGE WIND SPEED 5.4
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 73 2:00 AM
LOWEST 42 3:00 PM
AVERAGE 58
..........................................................
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 83 101 1988
MINIMUM TEMPERATURE (F) 67 49 1976
SUNRISE AND SUNSET
AUGUST 15 2025........SUNRISE 6:00 AM CDT SUNSET 7:50 PM CDT
AUGUST 16 2025........SUNRISE 6:01 AM CDT SUNSET 7:49 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$