448  
CDUS43 KLOT 172133  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
433 PM CDT TUE OCT 17 2023  
   
...............................
 
 
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR OCTOBER 17 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 62 2:24 PM 83 2016 62 0 41  
MINIMUM 34 6:04 AM 28 2004 42 -8 35  
AVERAGE 48 52 -4 38  
 
PRECIPITATION (IN)  
TODAY 0.00 3.05 1998 0.10 -0.10 T  
MONTH TO DATE 2.02 1.76 0.26 0.91  
SINCE SEP 1 4.79 4.76 0.03 3.26  
SINCE JAN 1 27.24 28.13 -0.89 27.99  
 
DEGREE DAYS  
HEATING  
TODAY 17 13 4 27  
MONTH TO DATE 146 177 -31 230  
SINCE SEP 1 193 277 -84 328  
SINCE JUL 1 196 288 -92 328  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 25 9 16 0  
SINCE SEP 1 126 97 29 122  
SINCE JAN 1 800 821 -21 945    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION W (250)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION SW (240)  
AVERAGE WIND SPEED 4.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 4:00 AM  
LOWEST 50 3:00 PM  
AVERAGE 75  
   
......................................................
 
 
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 62 78 2007  
MINIMUM TEMPERATURE (F) 41 27 2015  
 
SUNRISE AND SUNSET  
OCTOBER 17 2023.......SUNRISE 7:07 AM CDT SUNSET 6:09 PM CDT  
OCTOBER 18 2023.......SUNRISE 7:09 AM CDT SUNSET 6:07 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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