215  
CDUS43 KLOT 302133  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
433 PM CDT THU SEP 30 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 30 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 85 1:42 PM 86 2019 70 15  
MINIMUM 53 4:50 AM 35 2004 48 5  
AVERAGE 69 59 10  
 
PRECIPITATION (IN)  
TODAY 0.00 0.35 1998 0.10 -0.10  
MONTH TO DATE 0.93 3.00 -2.07  
SINCE SEP 1 0.93 3.00 -2.07  
SINCE JAN 1 17.34 26.37 -9.03  
 
DEGREE DAYS  
HEATING  
TODAY 0 7 -7  
MONTH TO DATE 24 100 -76  
SINCE SEP 1 24 100 -76  
SINCE JUL 1 24 111 -87  
 
COOLING  
TODAY 4 1 3  
MONTH TO DATE 128 88 40  
SINCE SEP 1 128 88 40  
SINCE JAN 1 1039 812 227    
............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION NE (60)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION E (80)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION E (80)  
AVERAGE WIND SPEED 4.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 70 87 2019  
MINIMUM TEMPERATURE (F) 48 31 2003  
 
SUNRISE AND SUNSET  
SEPTEMBER 30 2021.....SUNRISE 6:49 AM CDT SUNSET 6:36 PM CDT  
OCTOBER 1 2021.......SUNRISE 6:50 AM CDT SUNSET 6:34 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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