Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS43 KLOT 040632
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
132 AM CDT MON AUG 04 2025
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR AUGUST 3 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 79 2:12 PM 98 1930 84 -5 91
1944
1964
MINIMUM 61 5:35 AM 48 1894 66 -5 73
AVERAGE 70 75 -5 82
PRECIPITATION (IN)
YESTERDAY 0.00 2.10 1915 0.14 -0.14 0.00
MONTH TO DATE 0.00 0.44 -0.44 0.51
SINCE JUN 1 7.92 8.25 -0.33 9.50
SINCE JAN 1 17.42 22.90 -5.48 24.77
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 5 10 -5 17
MONTH TO DATE 12 30 -18 44
SINCE JUN 1 701 555 146 638
SINCE JAN 1 735 625 110 718
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION E (70)
AVERAGE WIND SPEED 6.7
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 84 6:00 AM
LOWEST 38 2:00 PM
AVERAGE 61
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 84 100 1947
MINIMUM TEMPERATURE (F) 66 53 1880
1894
1992
SUNRISE AND SUNSET
AUGUST 4 2025........SUNRISE 5:48 AM CDT SUNSET 8:06 PM CDT
AUGUST 5 2025........SUNRISE 5:50 AM CDT SUNSET 8:05 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$