177  
CDUS43 KLOT 150641  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
1241 AM CST TUE DEC 15 2020  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR DECEMBER 14 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 30 11:48 AM 61 2015 35 -5 32  
MINIMUM 19 11:47 PM -5 2016 19 0 22  
AVERAGE 25 27 -2 27  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.25 0.05 -0.05 0.00  
MONTH TO DATE 1.13 0.86 0.27 0.07  
SINCE DEC 1 1.13 0.86 0.27 0.07  
SINCE JAN 1 31.32 36.05 -4.73 41.93  
 
DEGREE DAYS  
HEATING  
YESTERDAY 40 38 2 38  
MONTH TO DATE 446 493 -47 473  
SINCE DEC 1 446 493 -47 473  
SINCE JUL 1 1617 1747 -130 1849  
 
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 10 RESULTANT WIND DIRECTION NW (310)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION NW (300)  
AVERAGE WIND SPEED 10.0  
 
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) 35 56 2011  
MINIMUM TEMPERATURE (F) 19 -3 2016  
 
SUNRISE AND SUNSET  
DECEMBER 15 2020......SUNRISE 7:14 AM CST SUNSET 4:23 PM CST  
DECEMBER 16 2020......SUNRISE 7:15 AM CST SUNSET 4:23 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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