496  
CDUS43 KLOT 010638  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
138 AM CDT SAT AUG 01 2026  
   
...............................  
 
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR JULY 31 2026...  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1997 TO 2026  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 78 9:28 AM 98 2006 84 -6 77  
MINIMUM 65 4:56 AM 50 1997 63 2 60  
AVERAGE 72 73 -1 69  
 
PRECIPITATION (IN)  
YESTERDAY 0.08 1.05 2000 0.12 -0.04 T  
MONTH TO DATE 5.41 3.62 1.79 6.96  
SINCE JUN 1 12.04 7.27 4.77 9.61  
SINCE JAN 1 24.92 19.53 5.39 17.67  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 1 0 1 0  
SINCE JUN 1 25 33 -8 18  
SINCE JUL 1 1 0 1 0  
 
COOLING  
YESTERDAY 7 8 -1 4  
MONTH TO DATE 307 272 35 365  
SINCE JUN 1 461 447 14 632  
SINCE JAN 1 520 503 17 665    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION SE (150)  
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION S (160)  
AVERAGE WIND SPEED 8.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 4:00 AM  
LOWEST 67 9:00 AM  
AVERAGE 80  
   
......................................................  
 
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 83 96 2006  
MINIMUM TEMPERATURE (F) 63 51 1998  
 
SUNRISE AND SUNSET  
AUGUST 1 2026........SUNRISE 5:47 AM CDT SUNSET 8:11 PM CDT  
AUGUST 2 2026........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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