231
CDUS43 KLOT 042145
CLIDPA
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
445 PM CDT THU SEP 04 2025
...............................
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 4 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 67 2:17 PM 93 2012 79 -12 82
MINIMUM 44R 5:27 AM 49 2000 58 -14 49
2020
2024
AVERAGE 56 69 -13 66
PRECIPITATION (IN)
TODAY 0.00 2.41 2008 0.10 -0.10 0.00
MONTH TO DATE 0.03 0.40 -0.37 0.00
SINCE SEP 1 0.03 0.40 -0.37 0.00
SINCE JAN 1 20.56 23.77 -3.21 24.32
DEGREE DAYS
HEATING
TODAY 9 1 8 0
MONTH TO DATE 11 4 7 3
SINCE SEP 1 11 4 7 3
SINCE JUL 1 22 15 7 12
COOLING
TODAY 0 5 -5 1
MONTH TO DATE 2 20 -18 3
SINCE SEP 1 2 20 -18 3
SINCE JAN 1 910 744 166 801
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION SW (230)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION SW (240)
AVERAGE WIND SPEED 8.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 86 5:00 AM
LOWEST 42 3:00 PM
AVERAGE 64
......................................................
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 79 92 1999
MINIMUM TEMPERATURE (F) 58 42 1997
SUNRISE AND SUNSET
SEPTEMBER 4 2025.....SUNRISE 6:22 AM CDT SUNSET 7:21 PM CDT
SEPTEMBER 5 2025.....SUNRISE 6:23 AM CDT SUNSET 7:19 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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