242  
CDUS43 KLOT 102137  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
437 PM CDT WED SEP 10 2025  
   
...............................  
 
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 10 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 82 2:48 PM 92 2005 78 4 81  
2013  
MINIMUM 54 5:58 AM 42 1999 56 -2 50  
2017  
AVERAGE 68 67 1 66  
 
PRECIPITATION (IN)  
TODAY 0.00 1.41 2014 0.10 -0.10 0.00  
MONTH TO DATE 0.03 1.01 -0.98 T  
SINCE SEP 1 0.03 1.01 -0.98 T  
SINCE JAN 1 20.56 24.38 -3.82 24.32  
 
DEGREE DAYS  
HEATING  
TODAY 0 2 -2 0  
MONTH TO DATE 47 13 34 22  
SINCE SEP 1 47 13 34 22  
SINCE JUL 1 58 24 34 31  
 
COOLING  
TODAY 3 4 -1 1  
MONTH TO DATE 5 44 -39 12  
SINCE SEP 1 5 44 -39 12  
SINCE JAN 1 913 768 145 810    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION S (180)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 2.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 86 6:00 AM  
LOWEST 34 1:00 PM  
AVERAGE 60  
   
......................................................  
 
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 77 91 2005  
2019  
MINIMUM TEMPERATURE (F) 56 43 1999  
 
SUNRISE AND SUNSET  
SEPTEMBER 10 2025.....SUNRISE 6:28 AM CDT SUNSET 7:11 PM CDT  
SEPTEMBER 11 2025.....SUNRISE 6:29 AM CDT SUNSET 7:09 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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