441  
CDUS43 KLOT 062134  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
434 PM CDT SAT SEP 06 2025  
   
...............................  
 
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 6 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 68 2:37 PM 92 2016 79 -11 71  
MINIMUM 44 5:10 AM 41 2000 57 -13 51  
AVERAGE 56 68 -12 61  
 
PRECIPITATION (IN)  
TODAY 0.00 1.33 2020 0.10 -0.10 0.00  
MONTH TO DATE 0.03 0.60 -0.57 T  
SINCE SEP 1 0.03 0.60 -0.57 T  
SINCE JAN 1 20.56 23.97 -3.41 24.32  
 
DEGREE DAYS  
HEATING  
TODAY 9 1 8 4  
MONTH TO DATE 27 6 21 7  
SINCE SEP 1 27 6 21 7  
SINCE JUL 1 38 17 21 16  
 
COOLING  
TODAY 0 4 -4 0  
MONTH TO DATE 2 28 -26 10  
SINCE SEP 1 2 28 -26 10  
SINCE JAN 1 910 752 158 808    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION W (260)  
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION W (270)  
AVERAGE WIND SPEED 9.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 86 4:00 AM  
LOWEST 35 2:00 PM  
AVERAGE 61  
   
......................................................  
 
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 78 90 2016  
2021  
MINIMUM TEMPERATURE (F) 57 46 2011  
 
SUNRISE AND SUNSET  
SEPTEMBER 6 2025.....SUNRISE 6:24 AM CDT SUNSET 7:17 PM CDT  
SEPTEMBER 7 2025.....SUNRISE 6:25 AM CDT SUNSET 7:16 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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