817  
CDUS43 KLOT 220632  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
132 AM CDT TUE AUG 22 2023  
   
...............................
 
 
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR AUGUST 21 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 83 1:44 PM 94 2003 82 1 80  
MINIMUM 63 10:43 PM 49 2004 61 2 61  
AVERAGE 73 72 1 71  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.38 2014 0.12 -0.12 T  
MONTH TO DATE 1.13 2.63 -1.50 2.93  
SINCE JUN 1 11.92 9.90 2.02 9.04  
SINCE JAN 1 22.45 22.16 0.29 23.72  
 
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 8 7 1 6  
MONTH TO DATE 133 161 -28 157  
SINCE JUN 1 549 608 -59 637  
SINCE JAN 1 600 664 -64 758    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION NE (40)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION NE (50)  
AVERAGE WIND SPEED 7.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 4:00 AM  
LOWEST 54 5:00 PM  
AVERAGE 74  
   
......................................................
 
 
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 82 90 2007  
MINIMUM TEMPERATURE (F) 61 48 2004  
 
SUNRISE AND SUNSET  
AUGUST 22 2023........SUNRISE 6:08 AM CDT SUNSET 7:43 PM CDT  
AUGUST 23 2023........SUNRISE 6:09 AM CDT SUNSET 7:41 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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