715  
CDUS43 KLOT 210631  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
1231 AM CST MON DEC 21 2020  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR DECEMBER 20 2020...  
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1997 TO 2020  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 40 2:55 PM 50 2015 34 6 40  
MINIMUM 30 10:00 PM -9 2000 18 12 18  
AVERAGE 35 26 9 29  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.79 0.05 -0.05 0.00  
MONTH TO DATE 1.13 1.20 -0.07 0.07  
SINCE DEC 1 1.13 1.20 -0.07 0.07  
SINCE JAN 1 31.32 36.39 -5.07 41.93  
 
DEGREE DAYS  
HEATING  
YESTERDAY 30 39 -9 36  
MONTH TO DATE 653 725 -72 721  
SINCE DEC 1 653 725 -72 721  
SINCE JUL 1 1824 1979 -155 2097  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 943 814 129 1003    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION SW (230)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION SW (220)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION SW (220)  
AVERAGE WIND SPEED 9.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 33 52 2015  
MINIMUM TEMPERATURE (F) 17 -8 2000  
 
SUNRISE AND SUNSET  
DECEMBER 21 2020......SUNRISE 7:18 AM CST SUNSET 4:25 PM CST  
DECEMBER 22 2020......SUNRISE 7:18 AM CST SUNSET 4:26 PM CST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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