648  
CDUS43 KLOT 110647  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
1247 AM CST FRI DEC 11 2020  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR DECEMBER 10 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 56 3:04 PM 57 2015 37 19 22  
MINIMUM 24 6:54 AM -10 2013 21 3 13  
AVERAGE 40 29 11 18  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.80 0.06 -0.06 T  
MONTH TO DATE 0.00 0.64 -0.64 0.07  
SINCE DEC 1 0.00 0.64 -0.64 0.07  
SINCE JAN 1 30.19 35.83 -5.64 41.93  
 
DEGREE DAYS  
HEATING  
YESTERDAY 25 36 -11 47  
MONTH TO DATE 312 344 -32 326  
SINCE DEC 1 312 344 -32 326  
SINCE JUL 1 1483 1598 -115 1702  
 
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 4 RESULTANT WIND DIRECTION S (180)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION S (180)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 4.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
HAZE  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 36 51 2015  
MINIMUM TEMPERATURE (F) 20 -5 2013  
 
SUNRISE AND SUNSET  
DECEMBER 11 2020......SUNRISE 7:11 AM CST SUNSET 4:22 PM CST  
DECEMBER 12 2020......SUNRISE 7:12 AM CST SUNSET 4:22 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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