350  
CDUS43 KLOT 100642  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
142 AM CDT TUE AUG 10 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR AUGUST 9 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 83 4:02 PM 94 2005 83 0 90  
MINIMUM 69 4:47 AM 49 1999 63 6 67  
AVERAGE 76 73 3 79  
 
PRECIPITATION (IN)  
YESTERDAY 0.42 0.88 0.12 0.30 0.00  
MONTH TO DATE 0.79 1.16 -0.37 0.14  
SINCE JUN 1 9.99 8.43 1.56 2.33  
SINCE JAN 1 15.14 20.69 -5.55 20.23  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 4  
SINCE JUN 1 11 37 -26 20  
SINCE JUL 1 0 4 -4 4  
 
COOLING  
YESTERDAY 11 8 3 14  
MONTH TO DATE 73 72 1 50  
SINCE JUN 1 584 519 65 633  
SINCE JAN 1 665 575 90 684    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 12 RESULTANT WIND DIRECTION S (170)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 11.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
RAIN  
LIGHT RAIN  
FOG  
HAZE  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 83 91 2016  
MINIMUM TEMPERATURE (F) 63 54 2008  
 
SUNRISE AND SUNSET  
AUGUST 10 2021........SUNRISE 5:56 AM CDT SUNSET 8:00 PM CDT  
AUGUST 11 2021........SUNRISE 5:57 AM CDT SUNSET 7:58 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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