050  
CDUS43 KLOT 150633  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
133 AM CDT WED SEP 15 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 14 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 87R 2:03 PM 87 2018 76 11 75  
MINIMUM 64 11:59 PM 39 2011 55 9 51  
AVERAGE 76 65 11 63  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.21 0.10 -0.10 0.00  
MONTH TO DATE 0.02 1.39 -1.37 3.48  
SINCE SEP 1 0.02 1.39 -1.37 3.48  
SINCE JAN 1 16.43 24.76 -8.33 24.53  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 3 -3 2  
MONTH TO DATE 0 22 -22 22  
SINCE SEP 1 0 22 -22 22  
SINCE JUL 1 0 33 -33 26  
 
COOLING  
YESTERDAY 11 3 8 0  
MONTH TO DATE 75 57 18 35  
SINCE SEP 1 75 57 18 35  
SINCE JAN 1 986 781 205 928    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION W (250)  
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION SW (240)  
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION SW (240)  
AVERAGE WIND SPEED 12.7  
 
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) 76 86 2009  
2017  
MINIMUM TEMPERATURE (F) 54 36 2007  
 
SUNRISE AND SUNSET  
SEPTEMBER 15 2021.....SUNRISE 6:33 AM CDT SUNSET 7:02 PM CDT  
SEPTEMBER 16 2021.....SUNRISE 6:34 AM CDT SUNSET 7:00 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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