286  
CDUS43 KLOT 310634  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
134 AM CDT TUE AUG 31 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR AUGUST 30 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 4:22 PM 93 2013 80 5 81  
MINIMUM 61 5:53 AM 48 2009 60 1 54  
AVERAGE 73 70 3 68  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.78 0.13 -0.13 0.00  
MONTH TO DATE 2.06 3.71 -1.65 0.96  
SINCE JUN 1 11.26 10.98 0.28 3.15  
SINCE JAN 1 16.41 23.24 -6.83 21.05  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 0 1 -1 4  
SINCE JUN 1 11 38 -27 20  
SINCE JUL 1 0 5 -5 4  
 
COOLING  
YESTERDAY 8 6 2 3  
MONTH TO DATE 312 215 97 253  
SINCE JUN 1 823 662 161 836  
SINCE JAN 1 904 718 186 887    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION N (350)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION NW (310)  
AVERAGE WIND SPEED 3.2  
 
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) 80 91 2000  
2010  
2012  
MINIMUM TEMPERATURE (F) 59 43 2009  
 
SUNRISE AND SUNSET  
AUGUST 31 2021........SUNRISE 6:18 AM CDT SUNSET 7:28 PM CDT  
SEPTEMBER 1 2021.....SUNRISE 6:19 AM CDT SUNSET 7:26 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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