139  
CDUS43 KLOT 170647  
CLIPWK  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
147 AM CDT SAT MAY 17 2025  
   
...............................
 
 
   
..THE CHICAGO EXECUTIVE AIRPORT CLIMATE SUMMARY FOR MAY 16 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 87R 4:00 PM 87 2001 70 17 75  
2017  
2025  
MINIMUM 57 MM 33 1997 50 7 50  
AVERAGE 72 60 12 63  
 
PRECIPITATION (IN)  
YESTERDAY T 1.00 2002 0.12 -0.12 0.15  
MONTH TO DATE 0.61 2.04 -1.43 2.15  
SINCE MAR 1 4.78 7.19 -2.41 8.88  
SINCE JAN 1 6.51 9.80 -3.29 12.21  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 7 -7 2  
MONTH TO DATE 126 143 -17 73  
SINCE MAR 1 1261 1463 -202 1169  
SINCE JUL 1 5490 5972 -482 5014  
 
COOLING  
YESTERDAY 7 2 5 0  
MONTH TO DATE 18 14 4 4  
SINCE MAR 1 21 22 -1 8  
SINCE JAN 1 21 22 -1 8    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 29 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 50 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 14.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 75 3:00 AM  
LOWEST 20 5:00 PM  
AVERAGE 48  
   
......................................................
 
 
THE CHICAGO EXECUTIVE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 70 87 1998  
MINIMUM TEMPERATURE (F) 50 36 2002  
 
SUNRISE AND SUNSET  
MAY 17 2025...........SUNRISE 5:29 AM CDT SUNSET 8:08 PM CDT  
MAY 18 2025...........SUNRISE 5:28 AM CDT SUNSET 8:09 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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