865  
CDUS43 KLOT 220646  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
146 AM CDT THU APR 22 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR APRIL 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 49 3:08 PM 81 2001 63 -14 52  
MINIMUM 29R 11:52 PM 29 2011 40 -11 34  
AVERAGE 39 51 -12 43  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.35 0.10 -0.10 0.00  
MONTH TO DATE 0.88 2.12 -1.24 1.09  
SINCE MAR 1 1.77 4.48 -2.71 4.58  
SINCE JAN 1 2.93 7.21 -4.28 7.23  
 
DEGREE DAYS  
HEATING  
YESTERDAY 26 14 12 22  
MONTH TO DATE 334 365 -31 412  
SINCE MAR 1 1039 1201 -162 1165  
SINCE JUL 1 5838 5956 -118 5755  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 4 0 4 1  
SINCE MAR 1 4 0 4 1  
SINCE JAN 1 4 0 4 1    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION W (280)  
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 35 HIGHEST GUST DIRECTION NW (310)  
AVERAGE WIND SPEED 9.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
HAZE  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 64 81 2007  
MINIMUM TEMPERATURE (F) 40 28 2003  
 
SUNRISE AND SUNSET  
APRIL 22 2021.........SUNRISE 6:01 AM CDT SUNSET 7:42 PM CDT  
APRIL 23 2021.........SUNRISE 6:00 AM CDT SUNSET 7:43 PM CDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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