Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS43 KLOT 090645
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1245 AM CST TUE DEC 09 2025
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 8 2025...
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)
YESTERDAY
MAXIMUM 26 4:01 PM 64 1946 39 -13 55
MINIMUM 17 7:45 AM -7 1882 26 -9 38
AVERAGE 22 32 -10 47
PRECIPITATION (IN)
YESTERDAY T 1.21 1885 0.07 -0.07 T
MONTH TO DATE 0.52 0.61 -0.09 T
SINCE DEC 1 0.52 0.61 -0.09 T
SINCE JAN 1 28.24 36.36 -8.12 32.99
SNOWFALL (IN)
YESTERDAY T 6.9 1977 0.2 -0.2 0.0
MONTH TO DATE 6.7 1.7 5.0 0.2
SINCE DEC 1 6.7 1.7 5.0 0.2
SINCE JUL 1 17.1 3.7 13.4 3.1
SNOW DEPTH 8
DEGREE DAYS
HEATING
YESTERDAY 43 32 11 18
MONTH TO DATE 344 250 94 297
SINCE DEC 1 344 250 94 297
SINCE JUL 1 1313 1401 -88 1064
COOLING
YESTERDAY 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 15 HIGHEST WIND DIRECTION S (180)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION S (180)
AVERAGE WIND SPEED 7.4
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT SNOW
RELATIVE HUMIDITY (PERCENT)
HIGHEST 76 3:00 AM
LOWEST 50 12:00 PM
AVERAGE 63
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 38 62 1879
MINIMUM TEMPERATURE (F) 26 -14 1876
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.
$$