279  
CDUS43 KLOT 210636  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
1236 AM CST THU JAN 21 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR JANUARY 20 2021...  
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1997 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 33 11:59 PM 45 2017 31 2 31  
MINIMUM 9 7:57 AM -7 2008 15 -6 13  
AVERAGE 21 23 -2 22  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.49 0.04 -0.04 0.00  
MONTH TO DATE 0.52 0.82 -0.30 1.68  
SINCE DEC 1 2.37 2.54 -0.17 3.06  
SINCE JAN 1 0.52 0.82 -0.30 1.68  
 
DEGREE DAYS  
HEATING  
YESTERDAY 44 42 2 43  
MONTH TO DATE 736 838 -102 731  
SINCE DEC 1 1809 2011 -202 1739  
SINCE JUL 1 2980 3265 -285 3115  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION SW (220)  
HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 37 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 14.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 31 59 2017  
MINIMUM TEMPERATURE (F) 15 -7 2011  
 
SUNRISE AND SUNSET  
JANUARY 21 2021.......SUNRISE 7:15 AM CST SUNSET 4:55 PM CST  
JANUARY 22 2021.......SUNRISE 7:14 AM CST SUNSET 4:56 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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