352  
CDUS43 KLOT 220635  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
1235 AM CST FRI JAN 22 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR JANUARY 21 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 37 2:47 PM 59 2017 31 6 27  
MINIMUM 26 8:03 AM -7 2011 15 11 8  
AVERAGE 32 23 9 18  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.20 0.04 -0.04 0.00  
MONTH TO DATE 0.52 0.86 -0.34 1.68  
SINCE DEC 1 2.37 2.58 -0.21 3.06  
SINCE JAN 1 0.52 0.86 -0.34 1.68  
 
DEGREE DAYS  
HEATING  
YESTERDAY 33 42 -9 47  
MONTH TO DATE 769 880 -111 778  
SINCE DEC 1 1842 2053 -211 1786  
SINCE JUL 1 3013 3307 -294 3162  
 
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 14 RESULTANT WIND DIRECTION W (250)  
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION W (250)  
HIGHEST GUST SPEED 38 HIGHEST GUST DIRECTION SW (240)  
AVERAGE WIND SPEED 14.8  
 
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 54 2018  
MINIMUM TEMPERATURE (F) 15 -3 2013  
2014  
 
SUNRISE AND SUNSET  
JANUARY 22 2021.......SUNRISE 7:14 AM CST SUNSET 4:56 PM CST  
JANUARY 23 2021.......SUNRISE 7:13 AM CST SUNSET 4:57 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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