325  
CDUS43 KLOT 122202  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
502 PM CDT SUN SEP 12 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 12 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 1:41 PM 90 2005 77 10  
MINIMUM 70 6:07 AM 42 1997 55 15  
AVERAGE 79 66 13  
 
PRECIPITATION (IN)  
TODAY 0.00 0.70 2008 0.10 -0.10  
MONTH TO DATE 0.02 1.20 -1.18  
SINCE SEP 1 0.02 1.20 -1.18  
SINCE JAN 1 16.43 24.57 -8.14  
 
DEGREE DAYS  
HEATING  
TODAY 0 2 -2  
MONTH TO DATE 0 17 -17  
SINCE SEP 1 0 17 -17  
SINCE JUL 1 0 28 -28  
 
COOLING  
TODAY 14 3 11  
MONTH TO DATE 54 51 3  
SINCE SEP 1 54 51 3  
SINCE JAN 1 965 775 190    
............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 11 RESULTANT WIND DIRECTION SW (220)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION SW (230)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION SW (220)  
AVERAGE WIND SPEED 11.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 77 94 2005  
MINIMUM TEMPERATURE (F) 55 39 2014  
 
SUNRISE AND SUNSET  
SEPTEMBER 12 2021.....SUNRISE 6:30 AM CDT SUNSET 7:07 PM CDT  
SEPTEMBER 13 2021.....SUNRISE 6:31 AM CDT SUNSET 7:05 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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