817  
CDUS43 KLOT 010634  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
134 AM CDT WED SEP 01 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR AUGUST 31 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 84 1:06 PM 91 2000 80 4 82  
2010  
2012  
MINIMUM 59 4:59 AM 43 2009 59 0 60  
AVERAGE 72 70 2 71  
 
PRECIPITATION (IN)  
YESTERDAY T 0.94 0.13 -0.13 0.00  
MONTH TO DATE 2.06 3.84 -1.78 0.96  
SINCE JUN 1 11.26 11.11 0.15 3.15  
SINCE JAN 1 16.41 23.37 -6.96 21.05  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 0 2 -2 4  
SINCE JUN 1 11 39 -28 20  
SINCE JUL 1 0 6 -6 4  
 
COOLING  
YESTERDAY 7 5 2 6  
MONTH TO DATE 319 221 98 259  
SINCE JUN 1 830 668 162 842  
SINCE JAN 1 911 724 187 893    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION NE (60)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION NE (40)  
AVERAGE WIND SPEED 7.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 80 92 2000  
2008  
2011  
MINIMUM TEMPERATURE (F) 59 44 2009  
 
SUNRISE AND SUNSET  
SEPTEMBER 1 2021.....SUNRISE 6:19 AM CDT SUNSET 7:26 PM CDT  
SEPTEMBER 2 2021.....SUNRISE 6:20 AM CDT SUNSET 7:24 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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