826
CDUS43 KLOT 302135
CLIDPA
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
435 PM CDT TUE SEP 30 2025
...............................
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 30 2025...
VALID TODAY AS OF 0400 PM LOCAL TIME.
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)
TODAY
MAXIMUM 84 1:52 PM 86 2019 70 14 80
MINIMUM 58 5:06 AM 35 2004 48 10 58
AVERAGE 71 59 12 69
PRECIPITATION (IN)
TODAY 0.00 0.35 1998 0.10 -0.10 0.00
MONTH TO DATE 0.64 3.00 -2.36 1.42
SINCE SEP 1 0.64 3.00 -2.36 1.42
SINCE JAN 1 21.17 26.37 -5.20 25.74
DEGREE DAYS
HEATING
TODAY 0 7 -7 0
MONTH TO DATE 47 100 -53 33
SINCE SEP 1 47 100 -53 33
SINCE JUL 1 58 111 -53 42
COOLING
TODAY 6 1 5 4
MONTH TO DATE 127 88 39 110
SINCE SEP 1 127 88 39 110
SINCE JAN 1 1035 812 223 908
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION E (70)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NE (40)
AVERAGE WIND SPEED 5.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 1:00 AM
LOWEST 40 3:00 PM
AVERAGE 67
......................................................
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 70 87 2019
MINIMUM TEMPERATURE (F) 48 31 2003
SUNRISE AND SUNSET
SEPTEMBER 30 2025.....SUNRISE 6:49 AM CDT SUNSET 6:36 PM CDT
OCTOBER 1 2025.......SUNRISE 6:50 AM CDT SUNSET 6:34 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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