Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS43 KLOT 290634
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
134 AM CDT FRI AUG 29 2025
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR AUGUST 28 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 77 12:29 PM 97 1953 81 -4 84
1955
MINIMUM 60 11:52 PM 42 1986 63 -3 71
AVERAGE 69 72 -3 78
PRECIPITATION (IN)
YESTERDAY 0.35 1.45 1932 0.13 0.22 0.18
MONTH TO DATE 5.03 3.84 1.19 2.32
SINCE JUN 1 12.95 11.65 1.30 11.31
SINCE JAN 1 22.45 26.30 -3.85 26.58
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 3 0 3 0
SINCE JUN 1 16 33 -17 6
SINCE JUL 1 3 2 1 0
COOLING
YESTERDAY 4 8 -4 13
MONTH TO DATE 266 256 10 278
SINCE JUN 1 955 781 174 872
SINCE JAN 1 989 851 138 952
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NE (40)
AVERAGE WIND SPEED 8.8
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 2:00 AM
LOWEST 61 4:00 PM
AVERAGE 77
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 81 98 1953
MINIMUM TEMPERATURE (F) 63 43 1965
1982
SUNRISE AND SUNSET
AUGUST 29 2025........SUNRISE 6:14 AM CDT SUNSET 7:30 PM CDT
AUGUST 30 2025........SUNRISE 6:15 AM CDT SUNSET 7:28 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$