213  
CDUS43 KLOT 300633  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
133 AM CDT WED JUL 30 2025  
   
...............................
 
 
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR JULY 29 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 91 3:53 PM 95 1999 84 7 82  
MINIMUM 69 3:11 AM 52 1997 63 6 71  
2003  
2013  
AVERAGE 80 74 6 77  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.53 2016 0.11 -0.11 0.19  
MONTH TO DATE 6.46 3.37 3.09 4.42  
SINCE JUN 1 9.11 7.02 2.09 9.45  
SINCE JAN 1 17.17 19.28 -2.11 22.09  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 3  
SINCE JUN 1 18 33 -15 16  
SINCE JUL 1 0 0 0 3  
 
COOLING  
YESTERDAY 15 9 6 12  
MONTH TO DATE 351 257 94 236  
SINCE JUN 1 618 432 186 478  
SINCE JAN 1 651 488 163 532    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION SW (230)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 3.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87 3:00 AM  
LOWEST 54 3:00 PM  
AVERAGE 71  
   
......................................................
 
 
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 84 98 1999  
MINIMUM TEMPERATURE (F) 63 49 1997  
 
SUNRISE AND SUNSET  
JULY 30 2025..........SUNRISE 5:45 AM CDT SUNSET 8:13 PM CDT  
JULY 31 2025..........SUNRISE 5:46 AM CDT SUNSET 8:12 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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