Climatological Report (Daily)
Issued by NWS
Issued by NWS
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868
CDUS43 KLOT 130635
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
135 AM CDT WED AUG 13 2025
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR AUGUST 12 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 85 2:21 PM 101 1918 83 2 82
MINIMUM 72 6:42 AM 47 1982 66 6 61
AVERAGE 79 74 5 72
PRECIPITATION (IN)
YESTERDAY 0.15 2.03 1908 0.14 0.01 0.00
MONTH TO DATE 0.52 1.66 -1.14 0.85
SINCE JUN 1 8.44 9.47 -1.03 9.84
SINCE JAN 1 17.94 24.12 -6.18 25.11
SNOWFALL (IN)
YESTERDAY 0.0 T 1989 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 14 10 4 7
MONTH TO DATE 143 120 23 112
SINCE JUN 1 832 645 187 706
SINCE JAN 1 866 715 151 786
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION SE (120)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION SE (150)
AVERAGE WIND SPEED 6.9
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 94 4:00 AM
LOWEST 65 11:00 AM
AVERAGE 80
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 83 98 1944
MINIMUM TEMPERATURE (F) 66 51 1982
2004
SUNRISE AND SUNSET
AUGUST 13 2025........SUNRISE 5:58 AM CDT SUNSET 7:54 PM CDT
AUGUST 14 2025........SUNRISE 5:59 AM CDT SUNSET 7:53 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$