589
CDUS43 KLOT 112137
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
437 PM CDT THU SEP 11 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 11 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 77 MM 95 1952 77 0 87
MINIMUM 62 MM 42 1993 59 3 59
AVERAGE 70 68 2 73
PRECIPITATION (IN)
TODAY 0.00 2.37 2000 0.11 -0.11 0.00
MONTH TO DATE 0.01 1.23 -1.22 0.04
SINCE SEP 1 0.01 1.23 -1.22 0.04
SINCE JAN 1 22.46 27.94 -5.48 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 8 24 14
SINCE SEP 1 32 8 24 14
SINCE JUL 1 37 14 23 14
COOLING
TODAY 5 5 0 8
MONTH TO DATE 19 63 -44 42
SINCE SEP 1 19 63 -44 42
SINCE JAN 1 1011 935 76 1028
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION NE (40)
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM
AVERAGE WIND SPEED 7.8
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 6:00 AM
LOWEST 50 2:00 PM
AVERAGE 70
......................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 77 96 1952
MINIMUM TEMPERATURE (F) 59 44 1955
2014
SUNRISE AND SUNSET
SEPTEMBER 11 2025.....SUNRISE 6:28 AM CDT SUNSET 7:07 PM CDT
SEPTEMBER 12 2025.....SUNRISE 6:29 AM CDT SUNSET 7:06 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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