582  
CDUS43 KLOT 220639  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
139 AM CDT SAT JUL 22 2023  
   
...............................
 
 
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR JULY 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 81 4:14 PM 97 2011 84 -3 91  
MINIMUM 60 2:42 AM 52 2007 64 -4 66  
AVERAGE 71 74 -3 79  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.83 2001 0.12 -0.12 0.00  
MONTH TO DATE 5.27 2.40 2.87 1.92  
SINCE JUN 1 6.44 6.05 0.39 3.87  
SINCE JAN 1 16.97 18.31 -1.34 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 6 9 -3 14  
MONTH TO DATE 160 185 -25 203  
SINCE JUN 1 311 360 -49 399  
SINCE JAN 1 362 416 -54 520    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION NE (30)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION NE (50)  
AVERAGE WIND SPEED 3.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87 8:00 AM  
LOWEST 44 3:00 PM  
AVERAGE 66  
   
......................................................
 
 
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 84 94 2001  
MINIMUM TEMPERATURE (F) 64 53 2000  
2007  
 
SUNRISE AND SUNSET  
JULY 22 2023..........SUNRISE 5:37 AM CDT SUNSET 8:22 PM CDT  
JULY 23 2023..........SUNRISE 5:38 AM CDT SUNSET 8:21 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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