123  
CDUS43 KLOT 212138  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
438 PM CDT TUE SEP 21 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 21 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 68 12:29 PM 92 2017 74 -6  
MINIMUM 61 7:25 AM 40 2006 52 9  
AVERAGE 65 63 2  
 
PRECIPITATION (IN)  
TODAY 0.16 0.51 2019 0.11 0.05  
MONTH TO DATE 0.84 2.11 -1.27  
SINCE SEP 1 0.84 2.11 -1.27  
SINCE JAN 1 17.25 25.48 -8.23  
 
DEGREE DAYS  
HEATING  
TODAY 0 4 -4  
MONTH TO DATE 0 47 -47  
SINCE SEP 1 0 47 -47  
SINCE JUL 1 0 58 -58  
 
COOLING  
TODAY 0 2 -2  
MONTH TO DATE 112 74 38  
SINCE SEP 1 112 74 38  
SINCE JAN 1 1023 798 225    
............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION NW (300)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION SW (230)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 11.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
FOG  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 73 94 2017  
MINIMUM TEMPERATURE (F) 51 38 1999  
 
SUNRISE AND SUNSET  
SEPTEMBER 21 2021.....SUNRISE 6:40 AM CDT SUNSET 6:51 PM CDT  
SEPTEMBER 22 2021.....SUNRISE 6:41 AM CDT SUNSET 6:50 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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