672
CDUS43 KLOT 172211
CLIDPA
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
511 PM CDT THU SEP 17 2026
...............................
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 17 2026...
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1997 TO 2026
WEATHER ITEM OBSERVED RECORD YEAR NORMAL DEPARTURE LAST
VALUE VALUE VALUE FROM YEAR
NORMAL
........................................................
TEMPERATURE (F)
TODAY
MAXIMUM 81 92 2018 75 6 85
MINIMUM 65 40 1999 53 12 54
AVERAGE 73 64 9 70
PRECIPITATION (IN)
TODAY 1.57R 0.84 2023 0.10 1.47 0.00
MONTH TO DATE 1.73 1.69 0.04 0.34
SINCE SEP 1 1.73 1.69 0.04 0.34
SINCE JAN 1 30.87 25.06 5.81 20.87
DEGREE DAYS
HEATING
TODAY 0 3 -3 0
MONTH TO DATE 10 31 -21 47
SINCE SEP 1 10 31 -21 47
SINCE JUL 1 11 42 -31 58
COOLING
TODAY 8 3 5 5
MONTH TO DATE 147 66 81 49
SINCE SEP 1 147 66 81 49
SINCE JAN 1 828 790 38 957
........................................................
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
THUNDERSTORM
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 4:00 AM
LOWEST 77 12:00 PM
AVERAGE 89
......................................................
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 88 2007
2025
MINIMUM TEMPERATURE (F) 53 41 2012
SUNRISE AND SUNSET
SEPTEMBER 17 2026.....SUNRISE 6:35 AM CDT SUNSET 6:59 PM CDT
SEPTEMBER 18 2026.....SUNRISE 6:36 AM CDT SUNSET 6:57 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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