051
CDUS43 KLOT 170635
CLIMDW
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1235 AM CST WED DEC 17 2025
...............................
..THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR DECEMBER 16 2025
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)
YESTERDAY
MAXIMUM 40 11:59 PM 67 2021 37 3 54
MINIMUM 17 2:08 AM -12 1932 25 -8 37
1951
AVERAGE 29 31 -2 46
PRECIPITATION (IN)
YESTERDAY 0.00 0.48 2023 0.05 -0.05 0.02
MONTH TO DATE 0.43 0.98 -0.55 0.26
SINCE DEC 1 0.43 0.98 -0.55 0.26
SINCE JAN 1 30.12 33.61 -3.49 35.45
DEGREE DAYS
HEATING
YESTERDAY 36 34 2 19
MONTH TO DATE 676 506 170 548
SINCE DEC 1 676 506 170 548
SINCE JUL 1 1585 1590 -5 1254
COOLING
YESTERDAY 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 22 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 11.0
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 80 3:00 AM
LOWEST 59 2:00 PM
AVERAGE 70
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THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 37 60 1977
MINIMUM TEMPERATURE (F) 25 -7 1951
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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