685  
CDUS43 KLOT 012133  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
433 PM CDT FRI AUG 01 2025  
   
...............................  
 
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR AUGUST 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 77 1:25 PM 96 2006 83 -6 86  
MINIMUM 59 5:13 AM 51 1998 63 -4 69  
AVERAGE 68 73 -5 78  
 
PRECIPITATION (IN)  
TODAY 0.00 0.20 2000 0.14 -0.14 0.08  
MONTH TO DATE 0.00 0.14 -0.14 0.08  
SINCE JUN 1 9.61 7.41 2.20 9.67  
SINCE JAN 1 17.67 19.67 -2.00 22.31  
 
DEGREE DAYS  
HEATING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 18 37 -19 16  
SINCE JUL 1 0 4 -4 3  
 
COOLING  
TODAY 3 8 -5 13  
MONTH TO DATE 3 8 -5 13  
SINCE JUN 1 635 455 180 517  
SINCE JAN 1 668 511 157 571    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION NE (50)  
AVERAGE WIND SPEED 8.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 86 6:00 AM  
LOWEST 42 3:00 PM  
AVERAGE 64  
   
......................................................  
 
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 83 97 2006  
MINIMUM TEMPERATURE (F) 63 54 2009  
2021  
 
SUNRISE AND SUNSET  
AUGUST 1 2025........SUNRISE 5:47 AM CDT SUNSET 8:11 PM CDT  
AUGUST 2 2025........SUNRISE 5:48 AM CDT SUNSET 8:10 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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