256  
CDUS43 KLOT 160639  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
139 AM CDT SAT OCT 16 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR OCTOBER 15 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 62 2:54 PM 79 1999 63 -1 62  
MINIMUM 46 3:40 AM 27 1997 42 4 34  
2006  
AVERAGE 54 53 1 48  
 
PRECIPITATION (IN)  
YESTERDAY T 0.31 0.10 -0.10 0.00  
MONTH TO DATE 2.75 1.56 1.19 0.29  
SINCE SEP 1 3.68 4.56 -0.88 4.25  
SINCE JAN 1 20.09 27.93 -7.84 25.30  
 
DEGREE DAYS  
HEATING  
YESTERDAY 11 13 -2 17  
MONTH TO DATE 27 151 -124 152  
SINCE SEP 1 51 251 -200 257  
SINCE JUL 1 51 262 -211 261  
 
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 6 RESULTANT WIND DIRECTION NW (330)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 7.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 62 78 1998  
MINIMUM TEMPERATURE (F) 42 29 2018  
 
SUNRISE AND SUNSET  
OCTOBER 16 2021.......SUNRISE 7:07 AM CDT SUNSET 6:09 PM CDT  
OCTOBER 17 2021.......SUNRISE 7:08 AM CDT SUNSET 6:08 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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