Climatological Report (Daily)
Issued by NWS
Issued by NWS
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336
CDUS43 KLOT 230636
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
136 AM CDT SAT AUG 23 2025
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR AUGUST 22 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 81 4:53 PM 99 1936 82 -1 80
MINIMUM 63 4:46 AM 49 2004 65 -2 55
AVERAGE 72 73 -1 68
PRECIPITATION (IN)
YESTERDAY 0.00 4.45 2002 0.13 -0.13 0.00
MONTH TO DATE 4.68 3.06 1.62 1.50
SINCE JUN 1 12.60 10.87 1.73 10.49
SINCE JAN 1 22.10 25.52 -3.42 25.76
SNOWFALL (IN)
YESTERDAY 0.0 0.0 MM 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE JUN 1 0.0 0.0 0.0 T
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 13 33 -20 6
SINCE JUL 1 0 2 -2 0
COOLING
YESTERDAY 7 8 -1 3
MONTH TO DATE 252 208 44 182
SINCE JUN 1 941 733 208 776
SINCE JAN 1 975 803 172 856
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION SW (240)
AVERAGE WIND SPEED 3.9
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 2:00 AM
LOWEST 51 4:00 PM
AVERAGE 71
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 82 98 2023
MINIMUM TEMPERATURE (F) 64 48 1904
SUNRISE AND SUNSET
AUGUST 23 2025........SUNRISE 6:08 AM CDT SUNSET 7:39 PM CDT
AUGUST 24 2025........SUNRISE 6:09 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.
$$