360  
CDUS43 KLOT 212132  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
432 PM CDT SAT OCT 21 2023  
   
...............................
 
 
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR OCTOBER 21 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 63 1:03 PM 79 2007 60 3 76  
MINIMUM 40 1:57 AM 23 2018 40 0 35  
AVERAGE 52 50 2 56  
 
PRECIPITATION (IN)  
TODAY 0.00 0.38 2006 0.09 -0.09 0.00  
MONTH TO DATE 2.28 2.12 0.16 0.91  
SINCE SEP 1 5.05 5.12 -0.07 3.26  
SINCE JAN 1 27.50 28.49 -0.99 27.99  
 
DEGREE DAYS  
HEATING  
TODAY 13 15 -2 9  
MONTH TO DATE 197 235 -38 308  
SINCE SEP 1 244 335 -91 406  
SINCE JUL 1 247 346 -99 406  
 
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 26 HIGHEST WIND DIRECTION NW (330)  
HIGHEST GUST SPEED 39 HIGHEST GUST DIRECTION NW (330)  
AVERAGE WIND SPEED 9.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 4:00 AM  
LOWEST 56 1:00 PM  
AVERAGE 77  
   
......................................................
 
 
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 60 79 2022  
MINIMUM TEMPERATURE (F) 40 25 2013  
 
SUNRISE AND SUNSET  
OCTOBER 21 2023.......SUNRISE 7:12 AM CDT SUNSET 6:03 PM CDT  
OCTOBER 22 2023.......SUNRISE 7:13 AM CDT SUNSET 6:01 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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