619
CDUS43 KLOT 012245
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
445 PM CST MON DEC 01 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 1 2025
SNOWFALL VALID AS OF 1200 PM LOCAL TIME.
ALL OTHER OBSERVATIONS 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 30 1:54 PM 68 1970 41 -11 27
MINIMUM 17 3:35 AM -6 1893 28 -11 14
AVERAGE 24 35 -11 21
PRECIPITATION (IN)
TODAY 0.02 1.23 2006 0.08 -0.06 0.00
MONTH TO DATE 0.02 0.08 -0.06 0.00
SINCE DEC 1 0.02 0.08 -0.06 0.00
SINCE JAN 1 27.74 35.83 -8.09 32.99
SNOWFALL (IN)
TODAY 0.0 7.8 1978 0.2 -0.2 0.0
MONTH TO DATE 0.0 0.2 -0.2 0.0
SINCE DEC 1 0.0 0.2 -0.2 0.0
SINCE JUL 1 10.4 2.2 8.2 2.9
SNOW DEPTH 6
DEGREE DAYS
HEATING
TODAY 41 30 11 44
MONTH TO DATE 41 30 11 44
SINCE DEC 1 41 30 11 44
SINCE JUL 1 1010 1181 -171 811
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 10 HIGHEST WIND DIRECTION SE (150)
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 3.5
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT SNOW
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 4:00 PM
LOWEST 61 12:00 PM
AVERAGE 75
......................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 41 71 1982
MINIMUM TEMPERATURE (F) 28 -1 1893
1942
SUNRISE AND SUNSET
DECEMBER 1 2025......SUNRISE 7:00 AM CST SUNSET 4:21 PM CST
DECEMBER 2 2025......SUNRISE 7:01 AM CST SUNSET 4:21 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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