518  
CDUS43 KLOT 230649  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
149 AM CDT SUN JUL 23 2023  
   
...............................
 
 
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR JULY 22 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 84 2:28 PM 94 2001 84 0 89  
MINIMUM 61 6:45 PM 53 2000 64 -3 64  
2007  
AVERAGE 73 74 -1 77  
 
PRECIPITATION (IN)  
YESTERDAY 0.90 1.01 2011 0.13 0.77 0.00  
MONTH TO DATE 6.17 2.53 3.64 1.92  
SINCE JUN 1 7.34 6.18 1.16 3.87  
SINCE JAN 1 17.87 18.44 -0.57 18.55  
 
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 8 9 -1 12  
MONTH TO DATE 168 194 -26 215  
SINCE JUN 1 319 369 -50 411  
SINCE JAN 1 370 425 -55 532    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION NE (40)  
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION N (10)  
AVERAGE WIND SPEED 6.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
HEAVY RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 7:00 PM  
LOWEST 43 2:00 PM  
AVERAGE 67  
   
......................................................
 
 
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 84 93 1999  
MINIMUM TEMPERATURE (F) 64 48 2000  
 
SUNRISE AND SUNSET  
JULY 23 2023..........SUNRISE 5:38 AM CDT SUNSET 8:21 PM CDT  
JULY 24 2023..........SUNRISE 5:39 AM CDT SUNSET 8:20 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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