755  
CDUS43 KLOT 180633  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
1233 AM CST FRI DEC 18 2020  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR DECEMBER 17 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 34 12:44 PM 54 2006 34 0 28  
MINIMUM 21 11:59 PM -2 2000 18 3 14  
AVERAGE 28 26 2 21  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.05 0.06 -0.06 0.00  
MONTH TO DATE 1.13 1.03 0.10 0.07  
SINCE DEC 1 1.13 1.03 0.10 0.07  
SINCE JAN 1 31.32 36.22 -4.90 41.93  
 
DEGREE DAYS  
HEATING  
YESTERDAY 37 39 -2 44  
MONTH TO DATE 559 608 -49 598  
SINCE DEC 1 559 608 -49 598  
SINCE JUL 1 1730 1862 -132 1974  
 
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 NW (330)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION NW (330)  
AVERAGE WIND SPEED 3.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 34 54 2002  
MINIMUM TEMPERATURE (F) 18 -14 2016  
 
SUNRISE AND SUNSET  
DECEMBER 18 2020......SUNRISE 7:16 AM CST SUNSET 4:24 PM CST  
DECEMBER 19 2020......SUNRISE 7:17 AM CST SUNSET 4:24 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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