032  
CDUS43 KLOT 290634  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
134 AM CDT TUE JUL 29 2025  
   
...............................  
 
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR JULY 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 93R 4:39 PM 92 2023 84 9 84  
MINIMUM 72 11:30 PM 53 2013 63 9 68  
AVERAGE 83 74 9 76  
 
PRECIPITATION (IN)  
YESTERDAY 0.08 3.17 2023 0.12 -0.04 0.04  
MONTH TO DATE 6.46 3.26 3.20 4.23  
SINCE JUN 1 9.11 6.91 2.20 9.26  
SINCE JAN 1 17.17 19.17 -2.00 21.90  
 
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 18 9 9 11  
MONTH TO DATE 336 248 88 224  
SINCE JUN 1 603 423 180 466  
SINCE JAN 1 636 479 157 520    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION S (180)  
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION S (170)  
AVERAGE WIND SPEED 3.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
HEAVY RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 2:00 AM  
LOWEST 52 6:00 PM  
AVERAGE 75  
   
......................................................  
 
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 84 95 1999  
MINIMUM TEMPERATURE (F) 63 52 1997  
2003  
2013  
 
SUNRISE AND SUNSET  
JULY 29 2025..........SUNRISE 5:44 AM CDT SUNSET 8:14 PM CDT  
JULY 30 2025..........SUNRISE 5:45 AM CDT SUNSET 8:13 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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