573  
CDUS43 KLOT 230649  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
149 AM CDT THU SEP 23 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 22 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 63 2:23 PM 94 2017 73 -10 78  
MINIMUM 55 11:59 PM 38 1999 51 4 47  
AVERAGE 59 62 -3 63  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.34 0.10 -0.10 0.00  
MONTH TO DATE 0.84 2.21 -1.37 3.48  
SINCE SEP 1 0.84 2.21 -1.37 3.48  
SINCE JAN 1 17.25 25.58 -8.33 24.53  
 
DEGREE DAYS  
HEATING  
YESTERDAY 6 5 1 2  
MONTH TO DATE 8 52 -44 72  
SINCE SEP 1 8 52 -44 72  
SINCE JUL 1 8 63 -55 76  
 
COOLING  
YESTERDAY 0 2 -2 0  
MONTH TO DATE 112 76 36 41  
SINCE SEP 1 112 76 36 41  
SINCE JAN 1 1023 800 223 934    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 14 RESULTANT WIND DIRECTION N (350)  
HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION N (350)  
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION N (350)  
AVERAGE WIND SPEED 14.6  
 
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) 73 94 2017  
MINIMUM TEMPERATURE (F) 51 36 2012  
 
SUNRISE AND SUNSET  
SEPTEMBER 23 2021.....SUNRISE 6:42 AM CDT SUNSET 6:48 PM CDT  
SEPTEMBER 24 2021.....SUNRISE 6:43 AM CDT SUNSET 6:46 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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