689  
CDUS43 KLOT 210633  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
133 AM CDT SAT AUG 21 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR AUGUST 20 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 89 3:12 PM 92 2010 82 7 83  
MINIMUM 66 5:18 AM 51 2002 62 4 57  
AVERAGE 78 72 6 70  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.15 0.11 -0.11 0.00  
MONTH TO DATE 1.84 2.51 -0.67 0.96  
SINCE JUN 1 11.04 9.78 1.26 3.15  
SINCE JAN 1 16.19 22.04 -5.85 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 5  
MONTH TO DATE 177 154 23 134  
SINCE JUN 1 688 601 87 717  
SINCE JAN 1 769 657 112 768    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION S (160)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 3.8  
 
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 94 2003  
MINIMUM TEMPERATURE (F) 61 49 2004  
 
SUNRISE AND SUNSET  
AUGUST 21 2021........SUNRISE 6:08 AM CDT SUNSET 7:44 PM CDT  
AUGUST 22 2021........SUNRISE 6:09 AM CDT SUNSET 7:42 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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