508
CDUS43 KLOT 202149
CLIDPA
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
449 PM CDT SAT SEP 20 2025
...............................
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 20 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 79 1:07 PM 93 2018 74 5 90
2022
MINIMUM 62 6:09 AM 40 2003 52 10 60
2020
AVERAGE 71 63 8 75
PRECIPITATION (IN)
TODAY 0.04 0.77 2001 0.11 -0.07 0.05
MONTH TO DATE 0.41 2.00 -1.59 0.05
SINCE SEP 1 0.41 2.00 -1.59 0.05
SINCE JAN 1 20.94 25.37 -4.43 24.37
DEGREE DAYS
HEATING
TODAY 0 4 -4 0
MONTH TO DATE 47 43 4 22
SINCE SEP 1 47 43 4 22
SINCE JUL 1 58 54 4 31
COOLING
TODAY 6 2 4 10
MONTH TO DATE 72 72 0 85
SINCE SEP 1 72 72 0 85
SINCE JAN 1 980 796 184 883
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION SE (150)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION S (170)
AVERAGE WIND SPEED 5.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
THUNDERSTORM
LIGHT RAIN
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 6:00 AM
LOWEST 56 1:00 PM
AVERAGE 75
......................................................
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 92 2017
2024
MINIMUM TEMPERATURE (F) 52 40 2006
SUNRISE AND SUNSET
SEPTEMBER 20 2025.....SUNRISE 6:39 AM CDT SUNSET 6:53 PM CDT
SEPTEMBER 21 2025.....SUNRISE 6:40 AM CDT SUNSET 6:51 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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