836  
CDUS43 KLOT 190634  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
1234 AM CST SAT DEC 19 2020  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR DECEMBER 18 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 36 3:18 PM 54 2002 34 2 25  
MINIMUM 18 5:25 AM -14 2016 18 0 10  
AVERAGE 27 26 1 18  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.56 0.06 -0.06 0.00  
MONTH TO DATE 1.13 1.09 0.04 0.07  
SINCE DEC 1 1.13 1.09 0.04 0.07  
SINCE JAN 1 31.32 36.28 -4.96 41.93  
 
DEGREE DAYS  
HEATING  
YESTERDAY 38 39 -1 47  
MONTH TO DATE 597 647 -50 645  
SINCE DEC 1 597 647 -50 645  
SINCE JUL 1 1768 1901 -133 2021  
 
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 9 RESULTANT WIND DIRECTION S (170)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION S (180)  
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 10.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
HAZE  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 34 53 2002  
MINIMUM TEMPERATURE (F) 18 -15 2016  
 
SUNRISE AND SUNSET  
DECEMBER 19 2020......SUNRISE 7:17 AM CST SUNSET 4:24 PM CST  
DECEMBER 20 2020......SUNRISE 7:17 AM CST SUNSET 4:25 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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