468  
CDUS43 KLOT 290634  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
134 AM CDT FRI AUG 29 2025  
   
...............................
 
 
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR AUGUST 28 2025...  
 
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)  
YESTERDAY  
MAXIMUM 80 1:45 PM 93 2021 81 -1 84  
MINIMUM 56 11:59 PM 52 2023 60 -4 70  
AVERAGE 68 70 -2 77  
 
PRECIPITATION (IN)  
YESTERDAY 0.18 1.26 2004 0.12 0.06 0.16  
MONTH TO DATE 2.86 3.46 -0.60 1.87  
SINCE JUN 1 12.47 10.73 1.74 11.46  
SINCE JAN 1 20.53 22.99 -2.46 24.10  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 8 0 8 6  
SINCE JUN 1 26 37 -11 22  
SINCE JUL 1 8 4 4 9  
 
COOLING  
YESTERDAY 3 6 -3 12  
MONTH TO DATE 241 203 38 211  
SINCE JUN 1 873 650 223 715  
SINCE JAN 1 906 706 200 769    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION NE (40)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NE (40)  
AVERAGE WIND SPEED 6.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 5:00 AM  
LOWEST 52 2:00 PM  
AVERAGE 73  
   
......................................................
 
 
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 80 92 2010  
MINIMUM TEMPERATURE (F) 60 51 1999  
2001  
 
SUNRISE AND SUNSET  
AUGUST 29 2025........SUNRISE 6:16 AM CDT SUNSET 7:31 PM CDT  
AUGUST 30 2025........SUNRISE 6:17 AM CDT SUNSET 7:29 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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