537  
CDUS43 KLOT 202138  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
438 PM CDT MON SEP 20 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 20 2021...  
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1997 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE  
VALUE (LST) VALUE VALUE FROM  
NORMAL    
............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 81 2:59 PM 93 2018 74 7  
MINIMUM 69 8:00 AM 40 2003 52 17  
2020  
AVERAGE 75 63 12  
 
PRECIPITATION (IN)  
TODAY 0.29 0.77 2001 0.11 0.18  
MONTH TO DATE 0.62 2.00 -1.38  
SINCE SEP 1 0.62 2.00 -1.38  
SINCE JAN 1 17.03 25.37 -8.34  
 
DEGREE DAYS  
HEATING  
TODAY 0 4 -4  
MONTH TO DATE 0 43 -43  
SINCE SEP 1 0 43 -43  
SINCE JUL 1 0 54 -54  
 
COOLING  
TODAY 10 2 8  
MONTH TO DATE 112 72 40  
SINCE SEP 1 112 72 40  
SINCE JAN 1 1023 796 227    
............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION S (170)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION S (170)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION S (160)  
AVERAGE WIND SPEED 9.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 74 92 2017  
MINIMUM TEMPERATURE (F) 52 40 2006  
 
SUNRISE AND SUNSET  
SEPTEMBER 20 2021.....SUNRISE 6:39 AM CDT SUNSET 6:53 PM CDT  
SEPTEMBER 21 2021.....SUNRISE 6:40 AM CDT SUNSET 6:51 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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