247  
CDUS43 KLOT 200633  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
1233 AM CST SUN DEC 20 2020  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR DECEMBER 19 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 44 1:14 PM 53 2002 34 10 36  
MINIMUM 34 11:59 PM -15 2016 18 16 14  
AVERAGE 39 26 13 25  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.41 0.06 -0.06 0.00  
MONTH TO DATE 1.13 1.15 -0.02 0.07  
SINCE DEC 1 1.13 1.15 -0.02 0.07  
SINCE JAN 1 31.32 36.34 -5.02 41.93  
 
DEGREE DAYS  
HEATING  
YESTERDAY 26 39 -13 40  
MONTH TO DATE 623 686 -63 685  
SINCE DEC 1 623 686 -63 685  
SINCE JUL 1 1794 1940 -146 2061  
 
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 7 RESULTANT WIND DIRECTION SW (220)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION S (180)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 9.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
HAZE  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 34 50 2015  
MINIMUM TEMPERATURE (F) 18 -9 2000  
 
SUNRISE AND SUNSET  
DECEMBER 20 2020......SUNRISE 7:17 AM CST SUNSET 4:25 PM CST  
DECEMBER 21 2020......SUNRISE 7:18 AM CST SUNSET 4:25 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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