833  
CDUS43 KLOT 180703  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
203 AM CDT WED AUG 18 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR AUGUST 17 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 3:14 PM 87 2015 82 3 83  
MINIMUM 59 5:00 AM 51 2013 62 -3 63  
AVERAGE 72 72 0 73  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.84 0.13 -0.13 0.00  
MONTH TO DATE 1.82 2.16 -0.34 0.96  
SINCE JUN 1 11.02 9.43 1.59 3.15  
SINCE JAN 1 16.17 21.69 -5.52 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 7 7 0 8  
MONTH TO DATE 140 133 7 125  
SINCE JUN 1 651 580 71 708  
SINCE JAN 1 732 636 96 759    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION E (70)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION E (80)  
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION E (90)  
AVERAGE WIND SPEED 3.8  
 
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) 82 86 2006  
2016  
MINIMUM TEMPERATURE (F) 62 48 2012  
 
SUNRISE AND SUNSET  
AUGUST 18 2021........SUNRISE 6:04 AM CDT SUNSET 7:48 PM CDT  
AUGUST 19 2021........SUNRISE 6:05 AM CDT SUNSET 7:47 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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