202  
CDUS43 KLOT 182133  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
433 PM CDT SAT SEP 18 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 18 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 80 2:48 PM 88 2007 75 5  
MINIMUM 59 5:30 AM 41 2012 53 6  
AVERAGE 70 64 6  
 
PRECIPITATION (IN)  
TODAY 0.00 1.90 2015 0.10 -0.10  
MONTH TO DATE 0.33 1.79 -1.46  
SINCE SEP 1 0.33 1.79 -1.46  
SINCE JAN 1 16.74 25.16 -8.42  
 
DEGREE DAYS  
HEATING  
TODAY 0 4 -4  
MONTH TO DATE 0 35 -35  
SINCE SEP 1 0 35 -35  
SINCE JUL 1 0 46 -46  
 
COOLING  
TODAY 5 2 3  
MONTH TO DATE 92 68 24  
SINCE SEP 1 92 68 24  
SINCE JAN 1 1003 792 211    
............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION NE (40)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NE (40)  
AVERAGE WIND SPEED 8.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 75 89 2013  
MINIMUM TEMPERATURE (F) 52 37 2020  
 
SUNRISE AND SUNSET  
SEPTEMBER 18 2021.....SUNRISE 6:36 AM CDT SUNSET 6:57 PM CDT  
SEPTEMBER 19 2021.....SUNRISE 6:38 AM CDT SUNSET 6:55 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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