439
CDUS43 KLOT 092244
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
444 PM CST TUE DEC 09 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 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 35 3:59 PM 62 1879 38 -3 53
MINIMUM 21 2:22 AM -14 1876 26 -5 42
AVERAGE 28 32 -4 48
PRECIPITATION (IN)
TODAY 0.01 1.47 2008 0.08 -0.07 T
MONTH TO DATE 0.53 0.69 -0.16 T
SINCE DEC 1 0.53 0.69 -0.16 T
SINCE JAN 1 28.25 36.44 -8.19 32.99
SNOWFALL (IN)
TODAY 0.1 5.1 1931 0.2 -0.1 0.0
MONTH TO DATE 6.8 1.9 4.9 0.2
SINCE DEC 1 6.8 1.9 4.9 0.2
SINCE JUL 1 17.2 3.9 13.3 3.1
SNOW DEPTH 8
DEGREE DAYS
HEATING
TODAY 37 33 4 17
MONTH TO DATE 381 283 98 314
SINCE DEC 1 381 283 98 314
SINCE JUL 1 1350 1434 -84 1081
COOLING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 1215 1003 212 1212
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION SW (230)
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 13.6
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT SNOW
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 79 1:00 PM
LOWEST 68 12:00 AM
AVERAGE 74
......................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 38 62 1879
MINIMUM TEMPERATURE (F) 26 -8 1919
1978
SUNRISE AND SUNSET
DECEMBER 9 2025......SUNRISE 7:08 AM CST SUNSET 4:20 PM CST
DECEMBER 10 2025......SUNRISE 7:09 AM CST SUNSET 4:20 PM CST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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