765  
CDUS43 KLOT 010638  
CLIPWK  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
138 AM CDT WED OCT 01 2025  
   
...............................
 
 
...THE CHICAGO EXECUTIVE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 30 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 81 1:19 PM 87 2019 70 11 78  
MINIMUM 60 4:39 AM 37 2003 51 9 61  
AVERAGE 71 60 11 70  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.27 1998 0.10 -0.10 0.00  
MONTH TO DATE 1.70 3.04 -1.34 0.99  
SINCE SEP 1 1.70 3.04 -1.34 0.99  
SINCE JAN 1 19.47 25.38 -5.91 27.38  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 6 -6 0  
MONTH TO DATE 34 82 -48 20  
SINCE SEP 1 34 82 -48 20  
SINCE JUL 1 42 89 -47 25  
 
COOLING  
YESTERDAY 6 1 5 5  
MONTH TO DATE 140 106 34 138  
SINCE SEP 1 140 106 34 138  
SINCE JAN 1 1064 920 144 1007    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION NE (40)  
AVERAGE WIND SPEED 4.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 2:00 AM  
LOWEST 42 11:00 AM  
AVERAGE 70  
   
......................................................
 
 
THE CHICAGO EXECUTIVE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 69 88 2019  
MINIMUM TEMPERATURE (F) 50 31 2003  
 
SUNRISE AND SUNSET  
OCTOBER 1 2025.......SUNRISE 6:49 AM CDT SUNSET 6:33 PM CDT  
OCTOBER 2 2025.......SUNRISE 6:50 AM CDT SUNSET 6:31 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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