608
CDUS43 KLOT 162240
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
440 PM CST TUE DEC 16 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 16 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 40 3:19 PM 66 2021 36 4 51
MINIMUM 17 6:23 AM -12 1951 24 -7 37
AVERAGE 29 30 -1 44
PRECIPITATION (IN)
TODAY 0.00 1.67 1921 0.06 -0.06 0.03
MONTH TO DATE 0.72 1.15 -0.43 0.41
SINCE DEC 1 0.72 1.15 -0.43 0.41
SINCE JAN 1 28.44 36.90 -8.46 33.40
SNOWFALL (IN)
TODAY 0.0 4.8 2008 0.3 -0.3 0.0
MONTH TO DATE 6.9 3.6 3.3 0.2
SINCE DEC 1 6.9 3.6 3.3 0.2
SINCE JUL 1 17.3 5.6 11.7 3.1
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 36 35 1 21
MONTH TO DATE 690 520 170 567
SINCE DEC 1 690 520 170 567
SINCE JUL 1 1659 1671 -12 1334
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 20 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION S (200)
AVERAGE WIND SPEED 7.9
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 77 5:00 AM
LOWEST 57 3:00 PM
AVERAGE 67
......................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 36 60 1977
MINIMUM TEMPERATURE (F) 24 -7 1951
SUNRISE AND SUNSET
DECEMBER 16 2025......SUNRISE 7:13 AM CST SUNSET 4:21 PM CST
DECEMBER 17 2025......SUNRISE 7:14 AM CST SUNSET 4:22 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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