Climatological Report (Daily)
Issued by NWS
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CDUS43 KLOT 312133
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
433 PM CDT THU JUL 31 2025
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR JULY 31 2025...
VALID TODAY AS OF 0400 PM LOCAL TIME.
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)
TODAY
MAXIMUM 76 1:25 PM 99 1945 84 -8 92
2006
MINIMUM 67 1:44 AM 51 1984 67 0 72
AVERAGE 72 75 -3 82
PRECIPITATION (IN)
TODAY 0.01 1.29 1888 0.13 -0.12 0.00
MONTH TO DATE 4.29 3.71 0.58 5.89
SINCE JUN 1 7.92 7.81 0.11 8.99
SINCE JAN 1 17.42 22.46 -5.04 24.26
SNOWFALL (IN)
TODAY 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
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 13 31 -18 6
SINCE JUL 1 0 0 0 0
COOLING
TODAY 7 10 -3 17
MONTH TO DATE 395 326 69 316
SINCE JUN 1 691 525 166 594
SINCE JAN 1 725 595 130 674
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 16.5
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 12:00 AM
LOWEST 48 1:00 PM
AVERAGE 69
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 84 100 1988
MINIMUM TEMPERATURE (F) 67 51 1990
SUNRISE AND SUNSET
JULY 31 2025..........SUNRISE 5:44 AM CDT SUNSET 8:11 PM CDT
AUGUST 1 2025........SUNRISE 5:45 AM CDT SUNSET 8:10 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$