015  
CDUS43 KLOT 170634  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
1234 AM CST THU DEC 17 2020  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR DECEMBER 16 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 32 10:36 PM 54 2006 35 -3 30  
2015  
MINIMUM 27 3:51 AM 3 2013 19 8 24  
AVERAGE 30 27 3 27  
 
PRECIPITATION (IN)  
YESTERDAY T 0.17 0.05 -0.05 T  
MONTH TO DATE 1.13 0.97 0.16 0.07  
SINCE DEC 1 1.13 0.97 0.16 0.07  
SINCE JAN 1 31.32 36.16 -4.84 41.93  
 
DEGREE DAYS  
HEATING  
YESTERDAY 35 38 -3 38  
MONTH TO DATE 522 569 -47 554  
SINCE DEC 1 522 569 -47 554  
SINCE JUL 1 1693 1823 -130 1930  
 
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 5 RESULTANT WIND DIRECTION NE (50)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION E (80)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION E (90)  
AVERAGE WIND SPEED 7.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT SNOW  
HAZE  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 34 54 2006  
MINIMUM TEMPERATURE (F) 18 -2 2000  
 
SUNRISE AND SUNSET  
DECEMBER 17 2020......SUNRISE 7:15 AM CST SUNSET 4:23 PM CST  
DECEMBER 18 2020......SUNRISE 7:16 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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