132  
CDUS43 KLOT 280633  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
133 AM CDT FRI JUL 28 2023  
   
...............................
 
 
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR JULY 27 2023...  
 
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)  
YESTERDAY  
MAXIMUM 91R 3:54 PM 91 1997 84 7 84  
2011  
MINIMUM 69 5:25 AM 53 2013 64 5 66  
AVERAGE 80 74 6 75  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.70 2011 0.12 -0.12 0.19  
MONTH TO DATE 6.45 3.14 3.31 4.15  
SINCE JUN 1 7.62 6.79 0.83 6.10  
SINCE JAN 1 18.15 19.05 -0.90 20.78  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 29 33 -4 13  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY 15 9 6 10  
MONTH TO DATE 225 239 -14 260  
SINCE JUN 1 376 414 -38 456  
SINCE JAN 1 427 470 -43 577    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION SE (140)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION E (90)  
AVERAGE WIND SPEED 2.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 4:00 AM  
LOWEST 57 12:00 PM  
AVERAGE 77  
   
......................................................
 
 
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 84 91 2006  
MINIMUM TEMPERATURE (F) 63 53 2013  
 
SUNRISE AND SUNSET  
JULY 28 2023..........SUNRISE 5:43 AM CDT SUNSET 8:16 PM CDT  
JULY 29 2023..........SUNRISE 5:44 AM CDT SUNSET 8:15 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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