875  
CDUS43 KLOT 190636  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
136 AM CDT SAT AUG 19 2023  
   
...............................
 
 
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR AUGUST 18 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 77 1:26 PM 86 2006 82 -5 83  
2016  
MINIMUM 54 4:47 AM 48 2012 62 -8 56  
AVERAGE 66 72 -6 70  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.71 2006 0.12 -0.12 0.00  
MONTH TO DATE 1.13 2.28 -1.15 1.41  
SINCE JUN 1 11.92 9.55 2.37 7.52  
SINCE JAN 1 22.45 21.81 0.64 22.20  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 29 37 -8 13  
SINCE JUL 1 0 4 -4 0  
 
COOLING  
YESTERDAY 1 7 -6 5  
MONTH TO DATE 104 140 -36 139  
SINCE JUN 1 520 587 -67 619  
SINCE JAN 1 571 643 -72 740    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 3.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87 1:00 AM  
LOWEST 41 11:00 AM  
AVERAGE 64  
   
......................................................
 
 
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 82 89 2021  
MINIMUM TEMPERATURE (F) 62 51 1997  
 
SUNRISE AND SUNSET  
AUGUST 19 2023........SUNRISE 6:05 AM CDT SUNSET 7:48 PM CDT  
AUGUST 20 2023........SUNRISE 6:06 AM CDT SUNSET 7:46 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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