472  
CDUS43 KLOT 212141  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
441 PM CDT THU OCT 21 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR OCTOBER 21 2021...  
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1997 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE  
VALUE (LST) VALUE VALUE FROM  
NORMAL    
............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 63 12:03 AM 79 2007 60 3  
MINIMUM 47 9:39 AM 23 2018 40 7  
AVERAGE 55 50 5  
 
PRECIPITATION (IN)  
TODAY T 0.38 2006 0.09 -0.09  
MONTH TO DATE 2.75 2.12 0.63  
SINCE SEP 1 3.68 5.12 -1.44  
SINCE JAN 1 20.09 28.49 -8.40  
 
DEGREE DAYS  
HEATING  
TODAY 10 15 -5  
MONTH TO DATE 84 235 -151  
SINCE SEP 1 108 335 -227  
SINCE JUL 1 108 346 -238  
 
COOLING  
TODAY 0 0 0  
MONTH TO DATE 46 9 37  
SINCE SEP 1 174 97 77  
SINCE JAN 1 1085 821 264    
............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 12 RESULTANT WIND DIRECTION W (260)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION W (260)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION W (270)  
AVERAGE WIND SPEED 13.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
FOG  
HAZE  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 60 76 2020  
MINIMUM TEMPERATURE (F) 40 25 2013  
 
SUNRISE AND SUNSET  
OCTOBER 21 2021.......SUNRISE 7:13 AM CDT SUNSET 6:02 PM CDT  
OCTOBER 22 2021.......SUNRISE 7:14 AM CDT SUNSET 6:00 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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