430  
CDUS43 KLOT 210633  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
1233 AM CST SUN FEB 21 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR FEBRUARY 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 27 3:03 PM 69 2017 38 -11 23  
MINIMUM -6 7:08 AM -9 2015 21 -27 7  
AVERAGE 11 29 -18 15  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.74 0.05 -0.05 0.00  
MONTH TO DATE 0.25 0.93 -0.68 0.37  
SINCE DEC 1 2.84 3.96 -1.12 4.03  
SINCE JAN 1 0.99 2.24 -1.25 2.65  
 
DEGREE DAYS  
HEATING  
YESTERDAY 54 36 18 50  
MONTH TO DATE 1103 767 336 778  
SINCE DEC 1 3364 3228 136 2903  
SINCE JUL 1 4535 4482 53 4279  
 
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 3 RESULTANT WIND DIRECTION S (170)  
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION SE (150)  
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION S (160)  
AVERAGE WIND SPEED 4.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
HAZE  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 38 65 2017  
MINIMUM TEMPERATURE (F) 21 5 2008  
 
SUNRISE AND SUNSET  
FEBRUARY 21 2021......SUNRISE 6:40 AM CST SUNSET 5:34 PM CST  
FEBRUARY 22 2021......SUNRISE 6:38 AM CST SUNSET 5:35 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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