399  
CDUS43 KLOT 162137  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
437 PM CDT SAT SEP 16 2023  
   
...............................
 
 
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 16 2023...  
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1997 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 67 2:59 PM 89 2018 76 -9 82  
MINIMUM 55 2:19 AM 39 2000 54 1 60  
AVERAGE 61 65 -4 71  
 
PRECIPITATION (IN)  
TODAY 0.02R 0.01 2010 0.10 -0.08 0.00  
MONTH TO DATE 0.77 1.59 -0.82 1.14  
SINCE SEP 1 0.77 1.59 -0.82 1.14  
SINCE JAN 1 23.22 24.96 -1.74 25.87  
 
DEGREE DAYS  
HEATING  
TODAY 4 3 1 0  
MONTH TO DATE 25 28 -3 6  
SINCE SEP 1 25 28 -3 6  
SINCE JUL 1 28 39 -11 6  
 
COOLING  
TODAY 0 3 -3 6  
MONTH TO DATE 67 63 4 78  
SINCE SEP 1 67 63 4 78  
SINCE JAN 1 741 787 -46 901    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION S (160)  
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION S (170)  
AVERAGE WIND SPEED 3.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87 2:00 PM  
LOWEST 65 10:00 AM  
AVERAGE 76  
   
......................................................
 
 
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 75 92 2018  
MINIMUM TEMPERATURE (F) 53 40 1999  
 
SUNRISE AND SUNSET  
SEPTEMBER 16 2023.....SUNRISE 6:34 AM CDT SUNSET 7:01 PM CDT  
SEPTEMBER 17 2023.....SUNRISE 6:35 AM CDT SUNSET 6:59 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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