699
CDUS43 KLOT 212235
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
435 PM CST SUN DEC 21 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 21 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 33 2:54 PM 62 1967 35 -2 27
MINIMUM 16 7:24 AM -14 1989 23 -7 14
AVERAGE 25 29 -4 21
PRECIPITATION (IN)
TODAY 0.00 1.81 1949 0.06 -0.06 0.00
MONTH TO DATE 0.91 1.47 -0.56 0.58
SINCE DEC 1 0.91 1.47 -0.56 0.58
SINCE JAN 1 28.63 37.22 -8.59 33.57
SNOWFALL (IN)
TODAY 0.0 3.6 1983 0.3 -0.3 0.0
MONTH TO DATE 7.0 4.8 2.2 2.4
SINCE DEC 1 7.0 4.8 2.2 2.4
SINCE JUL 1 17.4 6.8 10.6 5.3
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 40 36 4 44
MONTH TO DATE 869 698 171 748
SINCE DEC 1 869 698 171 748
SINCE JUL 1 1838 1849 -11 1515
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 NW (300)
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 7.9
SKY COVER
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 61 7:00 AM
LOWEST 34 2:00 PM
AVERAGE 48
......................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 35 57 1875
1957
MINIMUM TEMPERATURE (F) 23 -21 1872
SUNRISE AND SUNSET
DECEMBER 21 2025......SUNRISE 7:16 AM CST SUNSET 4:23 PM CST
DECEMBER 22 2025......SUNRISE 7:17 AM CST SUNSET 4:24 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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