975  
CDUS43 KLOT 180632  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
132 AM CDT SAT SEP 18 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 17 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 90 2:22 PM 92 2018 75 15 69  
MINIMUM 55 5:57 AM 40 1999 53 2 49  
AVERAGE 73 64 9 59  
 
PRECIPITATION (IN)  
YESTERDAY 0.31 0.44 0.10 0.21 0.00  
MONTH TO DATE 0.33 1.69 -1.36 3.48  
SINCE SEP 1 0.33 1.69 -1.36 3.48  
SINCE JAN 1 16.74 25.06 -8.32 24.53  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 3 -3 6  
MONTH TO DATE 0 31 -31 28  
SINCE SEP 1 0 31 -31 28  
SINCE JUL 1 0 42 -42 32  
 
COOLING  
YESTERDAY 8 3 5 0  
MONTH TO DATE 87 66 21 41  
SINCE SEP 1 87 66 21 41  
SINCE JAN 1 998 790 208 934    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION SW (210)  
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION N (350)  
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION N (350)  
AVERAGE WIND SPEED 7.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
LIGHT RAIN  
FOG  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 75 88 2007  
MINIMUM TEMPERATURE (F) 53 41 2012  
 
SUNRISE AND SUNSET  
SEPTEMBER 18 2021.....SUNRISE 6:36 AM CDT SUNSET 6:57 PM CDT  
SEPTEMBER 19 2021.....SUNRISE 6:38 AM CDT SUNSET 6:55 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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