462
CDUS43 KLOT 180635
CLIDPA
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1235 AM CST THU DEC 18 2025
...............................
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR DECEMBER 17 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1997 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 40 3:29 PM 54 2006 35 5 39
MINIMUM 32 8:42 PM -2 2000 21 11 30
AVERAGE 36 28 8 35
PRECIPITATION (IN)
YESTERDAY 0.00 0.05 2002 0.05 -0.05 0.00
MONTH TO DATE 0.39 1.00 -0.61 0.27
SINCE DEC 1 0.39 1.00 -0.61 0.27
SINCE JAN 1 26.09 32.56 -6.47 30.10
DEGREE DAYS
HEATING
YESTERDAY 29 37 -8 30
MONTH TO DATE 765 589 176 611
SINCE DEC 1 765 589 176 611
SINCE JUL 1 1848 1875 -27 1525
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 1084 823 261 927
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION SW (240)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION SW (240)
AVERAGE WIND SPEED 8.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 88 7:00 PM
LOWEST 70 2:00 PM
AVERAGE 79
......................................................
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 35 54 2002
MINIMUM TEMPERATURE (F) 21 -14 2016
SUNRISE AND SUNSET
DECEMBER 18 2025......SUNRISE 7:16 AM CST SUNSET 4:24 PM CST
DECEMBER 19 2025......SUNRISE 7:16 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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