821
CDUS43 KLOT 172232
CLIMDW
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
432 PM CST WED DEC 17 2025
...............................
..THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR DECEMBER 17 2025
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1928 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 43 2:55 PM 60 1977 37 6 39
MINIMUM 32 6:44 AM -7 1951 25 7 33
AVERAGE 38 31 7 36
PRECIPITATION (IN)
TODAY 0.00 0.44 1928 0.06 -0.06 0.00
MONTH TO DATE 0.43 1.04 -0.61 0.26
SINCE DEC 1 0.43 1.04 -0.61 0.26
SINCE JAN 1 30.12 33.67 -3.55 35.45
DEGREE DAYS
HEATING
TODAY 27 34 -7 29
MONTH TO DATE 703 540 163 577
SINCE DEC 1 703 540 163 577
SINCE JUL 1 1612 1624 -12 1283
COOLING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 1410 1112 298 1384
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION W (250)
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION SW (240)
AVERAGE WIND SPEED 7.2
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 88 6:00 AM
LOWEST 62 2:00 PM
AVERAGE 75
......................................................
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 37 59 1939
MINIMUM TEMPERATURE (F) 24 -9 1983
SUNRISE AND SUNSET
DECEMBER 17 2025......SUNRISE 7:13 AM CST SUNSET 4:22 PM CST
DECEMBER 18 2025......SUNRISE 7:13 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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