803  
CDUS43 KLOT 200649  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
149 AM CDT FRI AUG 20 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR AUGUST 19 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 89R MM 87 2011 82 7 83  
2018  
2019  
MINIMUM 67 MM 51 1997 62 5 52  
AVERAGE 78 72 6 68  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.35 0.12 -0.12 0.00  
MONTH TO DATE 1.84 2.40 -0.56 0.96  
SINCE JUN 1 11.04 9.67 1.37 3.15  
SINCE JAN 1 16.19 21.93 -5.74 21.05  
 
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 13 7 6 3  
MONTH TO DATE 164 147 17 129  
SINCE JUN 1 675 594 81 712  
SINCE JAN 1 756 650 106 763    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION E (70)  
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION E (110)  
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM  
AVERAGE WIND SPEED 3.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
HAZE  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 82 92 2010  
MINIMUM TEMPERATURE (F) 62 51 2002  
 
SUNRISE AND SUNSET  
AUGUST 20 2021........SUNRISE 6:07 AM CDT SUNSET 7:45 PM CDT  
AUGUST 21 2021........SUNRISE 6:08 AM CDT SUNSET 7:44 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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