817  
CDUS43 KLOT 312134  
CLIPWK  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
434 PM CDT SUN AUG 31 2025  
   
...............................
 
 
...THE CHICAGO EXECUTIVE AIRPORT CLIMATE SUMMARY FOR AUGUST 31 2025...  
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 75 2:45 PM 94 2012 80 -5 84  
MINIMUM 50 4:52 AM 47 2009 62 -12 61  
AVERAGE 63 71 -8 73  
 
PRECIPITATION (IN)  
TODAY 0.00 0.17 2019 0.13 -0.13 0.00  
MONTH TO DATE 3.26 3.70 -0.44 1.83  
SINCE JUN 1 10.00 10.82 -0.82 12.10  
SINCE JAN 1 17.77 22.34 -4.57 26.39  
 
DEGREE DAYS  
HEATING  
TODAY 2 0 2 0  
MONTH TO DATE 8 0 8 2  
SINCE JUN 1 29 40 -11 16  
SINCE JUL 1 8 3 5 5  
 
COOLING  
TODAY 0 6 -6 8  
MONTH TO DATE 271 263 8 280  
SINCE JUN 1 903 754 149 832  
SINCE JAN 1 924 814 110 869    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION NE (40)  
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION NE (50)  
AVERAGE WIND SPEED 2.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 5:00 AM  
LOWEST 50 11:00 AM  
AVERAGE 73  
   
......................................................
 
 
THE CHICAGO EXECUTIVE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 80 94 2000  
2011  
MINIMUM TEMPERATURE (F) 62 46 2009  
 
SUNRISE AND SUNSET  
AUGUST 31 2025........SUNRISE 6:16 AM CDT SUNSET 7:26 PM CDT  
SEPTEMBER 1 2025.....SUNRISE 6:17 AM CDT SUNSET 7:25 PM CDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab IL Page
The Nexlab IN Page Main Text Page