891  
CDUS43 KLOT 190639  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
139 AM CDT THU AUG 19 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR AUGUST 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 85 3:26 PM 86 2006 82 3 77  
2016  
MINIMUM 66 4:05 AM 48 2012 62 4 55  
AVERAGE 76 72 4 66  
 
PRECIPITATION (IN)  
YESTERDAY 0.02 0.71 0.12 -0.10 0.00  
MONTH TO DATE 1.84 2.28 -0.44 0.96  
SINCE JUN 1 11.04 9.55 1.49 3.15  
SINCE JAN 1 16.19 21.81 -5.62 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 11 7 4 1  
MONTH TO DATE 151 140 11 126  
SINCE JUN 1 662 587 75 709  
SINCE JAN 1 743 643 100 760    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION E (80)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION E (110)  
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION E (70)  
AVERAGE WIND SPEED 4.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
LIGHT RAIN  
FOG  
HAZE  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 82 87 2011  
2018  
2019  
MINIMUM TEMPERATURE (F) 62 51 1997  
 
SUNRISE AND SUNSET  
AUGUST 19 2021........SUNRISE 6:05 AM CDT SUNSET 7:47 PM CDT  
AUGUST 20 2021........SUNRISE 6:07 AM CDT SUNSET 7:45 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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