430  
CDUS43 KLOT 202137  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
437 PM CDT FRI SEP 20 2024  
   
...............................  
 
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 20 2024...  
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1997 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 90 2:45 PM 93 2018 74 16 79  
2022  
MINIMUM 67 6:08 AM 40 2003 52 15 60  
2020  
AVERAGE 79 63 16 70  
 
PRECIPITATION (IN)  
TODAY 0.05 0.77 2001 0.11 -0.06 0.25  
MONTH TO DATE 0.05 2.00 -1.95 2.11  
SINCE SEP 1 0.05 2.00 -1.95 2.11  
SINCE JAN 1 24.37 25.37 -1.00 24.56  
 
DEGREE DAYS  
HEATING  
TODAY 0 4 -4 0  
MONTH TO DATE 22 43 -21 40  
SINCE SEP 1 22 43 -21 40  
SINCE JUL 1 31 54 -23 43  
 
COOLING  
TODAY 14 2 12 5  
MONTH TO DATE 89 72 17 72  
SINCE SEP 1 89 72 17 72  
SINCE JAN 1 887 796 91 746    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NW (330)  
AVERAGE WIND SPEED 7.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
THUNDERSTORM  
RAIN  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87 5:00 AM  
LOWEST 26 3:00 PM  
AVERAGE 57  
   
......................................................  
 
THE DUPAGE 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 2024.....SUNRISE 6:39 AM CDT SUNSET 6:53 PM CDT  
SEPTEMBER 21 2024.....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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