649
CDUS43 KLOT 100636
CLIDPA
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
136 AM CDT WED SEP 10 2025
...............................
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 9 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 76 4:01 PM 90 2013 78 -2 80
MINIMUM 46R 5:49 AM 46 2008 56 -10 52
2010
AVERAGE 61 67 -6 66
PRECIPITATION (IN)
YESTERDAY 0.00 0.51 2001 0.10 -0.10 0.00
MONTH TO DATE 0.03 0.91 -0.88 T
SINCE SEP 1 0.03 0.91 -0.88 T
SINCE JAN 1 20.56 24.28 -3.72 24.32
DEGREE DAYS
HEATING
YESTERDAY 4 2 2 0
MONTH TO DATE 47 11 36 22
SINCE SEP 1 47 11 36 22
SINCE JUL 1 58 22 36 31
COOLING
YESTERDAY 0 4 -4 1
MONTH TO DATE 2 40 -38 11
SINCE SEP 1 2 40 -38 11
SINCE JAN 1 910 764 146 809
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION S (160)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION S (180)
AVERAGE WIND SPEED 3.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 86 1:00 AM
LOWEST 34 3:00 PM
AVERAGE 60
......................................................
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 92 2005
2013
MINIMUM TEMPERATURE (F) 56 42 1999
2017
SUNRISE AND SUNSET
SEPTEMBER 10 2025.....SUNRISE 6:28 AM CDT SUNSET 7:11 PM CDT
SEPTEMBER 11 2025.....SUNRISE 6:29 AM CDT SUNSET 7:09 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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