482  
CDUS43 KLOT 090633  
CLIPWK  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
133 AM CDT TUE SEP 09 2025  
   
...............................
 
 
...THE CHICAGO EXECUTIVE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 8 2025...  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1996 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 73 3:09 PM 92 2002 78 -5 73  
MINIMUM 46R 5:14 AM 46 2024 59 -13 46  
AVERAGE 60 69 -9 60  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.27 2020 0.11 -0.11 0.00  
MONTH TO DATE 0.11 0.88 -0.77 0.00  
SINCE SEP 1 0.11 0.88 -0.77 0.00  
SINCE JAN 1 17.88 23.22 -5.34 26.39  
 
DEGREE DAYS  
HEATING  
YESTERDAY 5 1 4 5  
MONTH TO DATE 32 7 25 16  
SINCE SEP 1 32 7 25 16  
SINCE JUL 1 40 14 26 21  
 
COOLING  
YESTERDAY 0 5 -5 0  
MONTH TO DATE 5 44 -39 15  
SINCE SEP 1 5 44 -39 15  
SINCE JAN 1 929 858 71 884    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION S (180)  
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION SE (150)  
AVERAGE WIND SPEED 3.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 1:00 AM  
LOWEST 37 2:00 PM  
AVERAGE 64  
   
......................................................
 
 
THE CHICAGO EXECUTIVE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 78 95 2013  
MINIMUM TEMPERATURE (F) 59 47 2008  
 
SUNRISE AND SUNSET  
SEPTEMBER 9 2025.....SUNRISE 6:26 AM CDT SUNSET 7:11 PM CDT  
SEPTEMBER 10 2025.....SUNRISE 6:27 AM CDT SUNSET 7:09 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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