115  
CDUS43 KLOT 172131  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
431 PM CDT TUE SEP 17 2024  
   
...............................
 
 
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 17 2024...  
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1997 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 86 1:40 PM 92 2018 75 11 68  
MINIMUM 53 5:41 AM 40 1999 53 0 51  
AVERAGE 70 64 6 60  
 
PRECIPITATION (IN)  
TODAY 0.00 0.84 2023 0.10 -0.10 0.84  
MONTH TO DATE T 1.69 -1.69 1.70  
SINCE SEP 1 T 1.69 -1.69 1.70  
SINCE JAN 1 24.32 25.06 -0.74 24.15  
 
DEGREE DAYS  
HEATING  
TODAY 0 3 -3 5  
MONTH TO DATE 22 31 -9 30  
SINCE SEP 1 22 31 -9 30  
SINCE JUL 1 31 42 -11 33  
 
COOLING  
TODAY 5 3 2 0  
MONTH TO DATE 63 66 -3 67  
SINCE SEP 1 63 66 -3 67  
SINCE JAN 1 861 790 71 741    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION E (70)  
AVERAGE WIND SPEED 3.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 89 5:00 AM  
LOWEST 30 3:00 PM  
AVERAGE 60  
   
......................................................
 
 
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 75 88 2007  
MINIMUM TEMPERATURE (F) 53 41 2012  
 
SUNRISE AND SUNSET  
SEPTEMBER 17 2024.....SUNRISE 6:36 AM CDT SUNSET 6:58 PM CDT  
SEPTEMBER 18 2024.....SUNRISE 6:37 AM CDT SUNSET 6:56 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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