794  
CDUS43 KLOT 112138  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
438 PM CDT SAT SEP 11 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 11 2021...  
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1997 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE  
VALUE (LST) VALUE VALUE FROM  
NORMAL    
............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 87 2:31 PM 91 2005 77 10  
2019  
MINIMUM 60 5:45 AM 43 1999 56 4  
AVERAGE 74 66 8  
 
PRECIPITATION (IN)  
TODAY 0.00 0.89 2006 0.09 -0.09  
MONTH TO DATE 0.02 1.10 -1.08  
SINCE SEP 1 0.02 1.10 -1.08  
SINCE JAN 1 16.43 24.47 -8.04  
 
DEGREE DAYS  
HEATING  
TODAY 0 2 -2  
MONTH TO DATE 0 15 -15  
SINCE SEP 1 0 15 -15  
SINCE JUL 1 0 26 -26  
 
COOLING  
TODAY 9 4 5  
MONTH TO DATE 40 48 -8  
SINCE SEP 1 40 48 -8  
SINCE JAN 1 951 772 179    
............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION S (200)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 8.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 77 90 2005  
MINIMUM TEMPERATURE (F) 55 42 1997  
 
SUNRISE AND SUNSET  
SEPTEMBER 11 2021.....SUNRISE 6:29 AM CDT SUNSET 7:09 PM CDT  
SEPTEMBER 12 2021.....SUNRISE 6:30 AM CDT SUNSET 7:07 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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