002  
CDUS43 KLOT 130642  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
142 AM CDT MON SEP 13 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 12 2021...  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1997 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 87 1:41 PM 90 2005 77 10 73  
MINIMUM 67 11:59 PM 42 1997 55 12 57  
AVERAGE 77 66 11 65  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.70 0.10 -0.10 0.31  
MONTH TO DATE 0.02 1.20 -1.18 3.44  
SINCE SEP 1 0.02 1.20 -1.18 3.44  
SINCE JAN 1 16.43 24.57 -8.14 24.49  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 2 -2 0  
MONTH TO DATE 0 17 -17 20  
SINCE SEP 1 0 17 -17 20  
SINCE JUL 1 0 28 -28 24  
 
COOLING  
YESTERDAY 12 3 9 0  
MONTH TO DATE 52 51 1 34  
SINCE SEP 1 52 51 1 34  
SINCE JAN 1 963 775 188 927    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 8 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 10.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 77 94 2005  
MINIMUM TEMPERATURE (F) 55 39 2014  
 
SUNRISE AND SUNSET  
SEPTEMBER 13 2021.....SUNRISE 6:31 AM CDT SUNSET 7:05 PM CDT  
SEPTEMBER 14 2021.....SUNRISE 6:32 AM CDT SUNSET 7:04 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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