339  
CDUS43 KLOT 190634  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
134 AM CDT TUE OCT 19 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR OCTOBER 18 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 72 1:42 PM 78 2007 62 10 57  
MINIMUM 39 6:15 AM 27 2015 41 -2 35  
AVERAGE 56 51 5 46  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.28 0.09 -0.09 0.16  
MONTH TO DATE 2.75 1.85 0.90 0.45  
SINCE SEP 1 3.68 4.85 -1.17 4.41  
SINCE JAN 1 20.09 28.22 -8.13 25.46  
 
DEGREE DAYS  
HEATING  
YESTERDAY 9 14 -5 19  
MONTH TO DATE 63 191 -128 210  
SINCE SEP 1 87 291 -204 315  
SINCE JUL 1 87 302 -215 319  
 
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 2 RESULTANT WIND DIRECTION SW (210)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 2.7  
 
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) 61 75 2000  
MINIMUM TEMPERATURE (F) 41 28 1997  
 
SUNRISE AND SUNSET  
OCTOBER 19 2021.......SUNRISE 7:10 AM CDT SUNSET 6:05 PM CDT  
OCTOBER 20 2021.......SUNRISE 7:11 AM CDT SUNSET 6:03 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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