373  
CDUS43 KLOT 100646  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
146 AM CDT FRI SEP 10 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 9 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 78 3:02 PM 90 2013 78 0 63  
MINIMUM 53 4:52 AM 46 2008 56 -3 54  
2010  
AVERAGE 66 67 -1 59  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.51 0.10 -0.10 0.08  
MONTH TO DATE 0.02 0.91 -0.89 2.60  
SINCE SEP 1 0.02 0.91 -0.89 2.60  
SINCE JAN 1 16.43 24.28 -7.85 23.65  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 2 -2 6  
MONTH TO DATE 0 11 -11 12  
SINCE SEP 1 0 11 -11 12  
SINCE JUL 1 0 22 -22 16  
 
COOLING  
YESTERDAY 1 4 -3 0  
MONTH TO DATE 29 40 -11 34  
SINCE SEP 1 29 40 -11 34  
SINCE JAN 1 940 764 176 927    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION NW (330)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION NW (300)  
AVERAGE WIND SPEED 2.3  
 
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) 78 92 2005  
2013  
MINIMUM TEMPERATURE (F) 56 42 1999  
2017  
 
SUNRISE AND SUNSET  
SEPTEMBER 10 2021.....SUNRISE 6:28 AM CDT SUNSET 7:11 PM CDT  
SEPTEMBER 11 2021.....SUNRISE 6:29 AM CDT SUNSET 7:09 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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