448  
CDUS43 KLOT 180632  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
132 AM CDT MON OCT 18 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR OCTOBER 17 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 67 3:28 PM 83 2016 62 5 64  
MINIMUM 37 5:35 AM 28 2004 42 -5 32  
AVERAGE 52 52 0 48  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 3.05 0.10 -0.10 T  
MONTH TO DATE 2.75 1.76 0.99 0.29  
SINCE SEP 1 3.68 4.76 -1.08 4.25  
SINCE JAN 1 20.09 28.13 -8.04 25.30  
 
DEGREE DAYS  
HEATING  
YESTERDAY 13 13 0 17  
MONTH TO DATE 54 177 -123 191  
SINCE SEP 1 78 277 -199 296  
SINCE JUL 1 78 288 -210 300  
 
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 4 RESULTANT WIND DIRECTION W (280)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 4.7  
 
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 78 2007  
MINIMUM TEMPERATURE (F) 41 27 2015  
 
SUNRISE AND SUNSET  
OCTOBER 18 2021.......SUNRISE 7:09 AM CDT SUNSET 6:06 PM CDT  
OCTOBER 19 2021.......SUNRISE 7:10 AM CDT SUNSET 6:05 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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