437  
CDUS43 KLOT 290637  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
137 AM CDT WED SEP 29 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 28 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 76 2:03 PM 84 2013 71 5 63  
MINIMUM 51 5:54 AM 37 2000 49 2 47  
AVERAGE 64 60 4 55  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.95 0.09 -0.09 0.23  
MONTH TO DATE 0.93 2.81 -1.88 3.96  
SINCE SEP 1 0.93 2.81 -1.88 3.96  
SINCE JAN 1 17.34 26.18 -8.84 25.01  
 
DEGREE DAYS  
HEATING  
YESTERDAY 1 6 -5 10  
MONTH TO DATE 24 86 -62 82  
SINCE SEP 1 24 86 -62 82  
SINCE JUL 1 24 97 -73 86  
 
COOLING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 122 86 36 48  
SINCE SEP 1 122 86 36 48  
SINCE JAN 1 1033 810 223 941    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION NE (50)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION NE (50)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION NE (50)  
AVERAGE WIND SPEED 7.2  
 
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) 70 85 2014  
MINIMUM TEMPERATURE (F) 48 35 2018  
 
SUNRISE AND SUNSET  
SEPTEMBER 29 2021.....SUNRISE 6:48 AM CDT SUNSET 6:38 PM CDT  
SEPTEMBER 30 2021.....SUNRISE 6:49 AM CDT SUNSET 6:36 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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