927  
CDUS43 KLOT 170636  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
136 AM CDT SUN OCT 17 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR OCTOBER 16 2021...  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
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 60 2:15 PM 78 1998 62 -2 55  
MINIMUM 42 6:24 AM 29 2018 42 0 30  
AVERAGE 51 52 -1 43  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.65 0.10 -0.10 T  
MONTH TO DATE 2.75 1.66 1.09 0.29  
SINCE SEP 1 3.68 4.66 -0.98 4.25  
SINCE JAN 1 20.09 28.03 -7.94 25.30  
 
DEGREE DAYS  
HEATING  
YESTERDAY 14 13 1 22  
MONTH TO DATE 41 164 -123 174  
SINCE SEP 1 65 264 -199 279  
SINCE JUL 1 65 275 -210 283  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 46 9 37 1  
SINCE SEP 1 174 97 77 49  
SINCE JAN 1 1085 821 264 942    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION W (290)  
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION NW (300)  
AVERAGE WIND SPEED 10.4  
 
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) 62 83 2016  
MINIMUM TEMPERATURE (F) 42 28 2004  
 
SUNRISE AND SUNSET  
OCTOBER 17 2021.......SUNRISE 7:08 AM CDT SUNSET 6:08 PM CDT  
OCTOBER 18 2021.......SUNRISE 7:09 AM CDT SUNSET 6:06 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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