332  
CDUS43 KLOT 120647  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
147 AM CDT THU AUG 12 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR AUGUST 11 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 87 4:49 PM 92 2016 83 4 85  
MINIMUM 70 12:39 AM 50 2004 63 7 62  
AVERAGE 79 73 6 74  
 
PRECIPITATION (IN)  
YESTERDAY 0.77 1.41 0.12 0.65 0.00  
MONTH TO DATE 1.81 1.39 0.42 0.45  
SINCE JUN 1 11.01 8.66 2.35 2.64  
SINCE JAN 1 16.16 20.92 -4.76 20.54  
 
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 14 8 6 9  
MONTH TO DATE 103 88 15 71  
SINCE JUN 1 614 535 79 654  
SINCE JAN 1 695 591 104 705    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION S (200)  
HIGHEST WIND SPEED 39 HIGHEST WIND DIRECTION SW (230)  
HIGHEST GUST SPEED 58 HIGHEST GUST DIRECTION SW (220)  
AVERAGE WIND SPEED 13.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
HEAVY RAIN  
RAIN  
FOG  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 83 94 2010  
MINIMUM TEMPERATURE (F) 63 48 2004  
 
SUNRISE AND SUNSET  
AUGUST 12 2021........SUNRISE 5:58 AM CDT SUNSET 7:57 PM CDT  
AUGUST 13 2021........SUNRISE 5:59 AM CDT SUNSET 7:56 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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