454  
CDUS43 KLOT 220644  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
144 AM CDT SUN AUG 22 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR AUGUST 21 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 12:43 PM 94 2003 82 3 85  
MINIMUM 70 4:40 AM 49 2004 61 9 58  
AVERAGE 78 72 6 72  
 
PRECIPITATION (IN)  
YESTERDAY 0.06 1.38 0.12 -0.06 0.00  
MONTH TO DATE 1.90 2.63 -0.73 0.96  
SINCE JUN 1 11.10 9.90 1.20 3.15  
SINCE JAN 1 16.25 22.16 -5.91 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 7  
MONTH TO DATE 190 161 29 141  
SINCE JUN 1 701 608 93 724  
SINCE JAN 1 782 664 118 775    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION S (190)  
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION SW (230)  
HIGHEST GUST SPEED 37 HIGHEST GUST DIRECTION SW (230)  
AVERAGE WIND SPEED 6.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
RAIN  
LIGHT RAIN  
FOG  
HAZE  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 82 90 2007  
MINIMUM TEMPERATURE (F) 61 48 2004  
 
SUNRISE AND SUNSET  
AUGUST 22 2021........SUNRISE 6:09 AM CDT SUNSET 7:42 PM CDT  
AUGUST 23 2021........SUNRISE 6:10 AM CDT SUNSET 7:41 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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