914
CDUS43 KLOT 092133
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
433 PM CDT TUE SEP 09 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 9 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 1:58 PM 95 1955 78 -2 81
1959
1983
MINIMUM 53 6:17 AM 43 1986 60 -7 57
AVERAGE 65 69 -4 69
PRECIPITATION (IN)
TODAY 0.00 3.44 1875 0.10 -0.10 0.00
MONTH TO DATE 0.01 1.02 -1.01 0.04
SINCE SEP 1 0.01 1.02 -1.01 0.04
SINCE JAN 1 22.46 27.73 -5.27 26.90
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 1 -1 0
MONTH TO DATE 32 6 26 14
SINCE SEP 1 32 6 26 14
SINCE JUL 1 37 12 25 14
COOLING
TODAY 0 5 -5 4
MONTH TO DATE 8 53 -45 29
SINCE SEP 1 8 53 -45 29
SINCE JAN 1 1000 925 75 1015
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION SW (230)
AVERAGE WIND SPEED 6.3
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 66 4:00 AM
LOWEST 30 1:00 PM
AVERAGE 48
......................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 95 1983
2013
MINIMUM TEMPERATURE (F) 59 44 1943
SUNRISE AND SUNSET
SEPTEMBER 9 2025.....SUNRISE 6:26 AM CDT SUNSET 7:11 PM CDT
SEPTEMBER 10 2025.....SUNRISE 6:27 AM CDT SUNSET 7:09 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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