398  
CDUS43 KLOT 220635  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
1235 AM CST TUE DEC 22 2020  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR DECEMBER 21 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 46 1:29 PM 52 2015 33 13 47  
MINIMUM 30 2:48 AM -8 2000 17 13 24  
AVERAGE 38 25 13 36  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.74 0.06 -0.06 0.00  
MONTH TO DATE 1.13 1.26 -0.13 0.07  
SINCE DEC 1 1.13 1.26 -0.13 0.07  
SINCE JAN 1 31.32 36.45 -5.13 41.93  
 
DEGREE DAYS  
HEATING  
YESTERDAY 27 40 -13 29  
MONTH TO DATE 680 765 -85 750  
SINCE DEC 1 680 765 -85 750  
SINCE JUL 1 1851 2019 -168 2126  
 
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 W (260)  
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION W (280)  
HIGHEST GUST SPEED 37 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 14.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 33 53 2006  
MINIMUM TEMPERATURE (F) 17 -10 2000  
 
SUNRISE AND SUNSET  
DECEMBER 22 2020......SUNRISE 7:18 AM CST SUNSET 4:26 PM CST  
DECEMBER 23 2020......SUNRISE 7:19 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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