202  
CDUS43 KLOT 090631  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
131 AM CDT THU SEP 09 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 8 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 80 1:44 PM 90 2002 78 2 62  
MINIMUM 54 6:05 AM 48 2010 57 -3 57  
AVERAGE 67 67 0 60  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.22 0.11 -0.11 0.76  
MONTH TO DATE 0.02 0.81 -0.79 2.52  
SINCE SEP 1 0.02 0.81 -0.79 2.52  
SINCE JAN 1 16.43 24.18 -7.75 23.57  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 2 -2 5  
MONTH TO DATE 0 9 -9 6  
SINCE SEP 1 0 9 -9 6  
SINCE JUL 1 0 20 -20 10  
 
COOLING  
YESTERDAY 2 4 -2 0  
MONTH TO DATE 28 36 -8 34  
SINCE SEP 1 28 36 -8 34  
SINCE JAN 1 939 760 179 927    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION NW (300)  
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION W (280)  
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 9.4  
 
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) 78 90 2013  
MINIMUM TEMPERATURE (F) 56 46 2008  
2010  
 
SUNRISE AND SUNSET  
SEPTEMBER 9 2021.....SUNRISE 6:27 AM CDT SUNSET 7:12 PM CDT  
SEPTEMBER 10 2021.....SUNRISE 6:28 AM CDT SUNSET 7:11 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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