990  
CDUS43 KLOT 212234  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
434 PM CST MON DEC 21 2020  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR DECEMBER 21 2020...  
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1997 TO 2020  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE  
VALUE (LST) VALUE VALUE FROM  
NORMAL    
............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 46 1:29 PM 52 2015 33 13  
MINIMUM 30 2:48 AM -8 2000 17 13  
AVERAGE 38 25 13  
 
PRECIPITATION (IN)  
TODAY 0.00 0.74 2015 0.06 -0.06  
MONTH TO DATE 1.13 1.26 -0.13  
SINCE DEC 1 1.13 1.26 -0.13  
SINCE JAN 1 31.32 36.45 -5.13  
 
DEGREE DAYS  
HEATING  
TODAY 27 40 -13  
MONTH TO DATE 680 765 -85  
SINCE DEC 1 680 765 -85  
SINCE JUL 1 1851 2019 -168  
 
COOLING  
TODAY 0 0 0  
MONTH TO DATE 0 0 0  
SINCE DEC 1 0 0 0  
SINCE JAN 1 943 814 129    
............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION W (250)  
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION W (280)  
HIGHEST GUST SPEED 37 HIGHEST GUST DIRECTION W (270)  
AVERAGE WIND SPEED 12.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 33 53 2006  
MINIMUM TEMPERATURE (F) 17 -10 2000  
 
SUNRISE AND SUNSET  
DECEMBER 21 2020......SUNRISE 7:18 AM CST SUNSET 4:25 PM CST  
DECEMBER 22 2020......SUNRISE 7:18 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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