Climatological Report (Daily)
Issued by NWS
Issued by NWS
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209
CDUS43 KLOT 012133
CLIDPA
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
433 PM CDT MON SEP 01 2025
...................................
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 1 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 2:48 PM 92 2000 80 -1 78
2008
2011
MINIMUM 52 4:39 AM 44 2009 59 -7 55
AVERAGE 66 69 -3 67
PRECIPITATION (IN)
TODAY 0.00 0.86 2013 0.10 -0.10 0.00
MONTH TO DATE 0.00 0.10 -0.10 0.00
SINCE SEP 1 0.00 0.10 -0.10 0.00
SINCE JAN 1 20.53 23.47 -2.94 24.32
DEGREE DAYS
HEATING
TODAY 0 1 -1 0
MONTH TO DATE 0 1 -1 0
SINCE SEP 1 0 1 -1 0
SINCE JUL 1 11 12 -1 9
COOLING
TODAY 1 5 -4 2
MONTH TO DATE 1 5 -4 2
SINCE SEP 1 1 5 -4 2
SINCE JAN 1 909 729 180 800
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION E (70)
AVERAGE WIND SPEED 3.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 3:00 AM
LOWEST 36 3:00 PM
AVERAGE 65
..........................................................
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 95 2008
MINIMUM TEMPERATURE (F) 59 43 2017
SUNRISE AND SUNSET
SEPTEMBER 1 2025.....SUNRISE 6:19 AM CDT SUNSET 7:26 PM CDT
SEPTEMBER 2 2025.....SUNRISE 6:20 AM CDT SUNSET 7:24 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$