410
CDUS43 KLOT 032136
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
436 PM CDT WED SEP 03 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 3 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 72 9:35 AM 97 1953 80 -8 78
MINIMUM 62 4:43 AM 47 1974 62 0 58
AVERAGE 67 71 -4 68
PRECIPITATION (IN)
TODAY 0.01 1.92 1961 0.11 -0.10 0.00
MONTH TO DATE 0.01 0.35 -0.34 0.00
SINCE SEP 1 0.01 0.35 -0.34 0.00
SINCE JAN 1 22.46 27.06 -4.60 26.86
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 SEP 1 0.0 0.0 0.0 0.0
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 SEP 1 0 0 0 0
SINCE JUL 1 5 6 -1 0
COOLING
TODAY 2 6 -4 3
MONTH TO DATE 10 19 -9 8
SINCE SEP 1 10 19 -9 8
SINCE JAN 1 1002 891 111 994
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION W (260)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION W (260)
AVERAGE WIND SPEED 9.6
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 84 1:00 PM
LOWEST 65 1:00 AM
AVERAGE 75
......................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 95 1954
1960
1983
MINIMUM TEMPERATURE (F) 62 45 1982
1997
SUNRISE AND SUNSET
SEPTEMBER 3 2025.....SUNRISE 6:20 AM CDT SUNSET 7:21 PM CDT
SEPTEMBER 4 2025.....SUNRISE 6:21 AM CDT SUNSET 7:20 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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