155  
CDUS43 KLOT 170647  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
147 AM CDT SAT MAY 17 2025  
   
...............................  
 
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR MAY 16 2025...  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1997 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 86 2:59 PM 88 2001 71 15 75  
MINIMUM 56 MM 34 2011 49 7 48  
AVERAGE 71 60 11 62  
 
PRECIPITATION (IN)  
YESTERDAY 0.01 0.80 2002 0.14 -0.13 0.00  
MONTH TO DATE 0.72 2.33 -1.61 2.07  
SINCE MAR 1 5.62 7.74 -2.12 8.84  
SINCE JAN 1 7.19 10.25 -3.06 11.29  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 7 -7 3  
MONTH TO DATE 106 141 -35 71  
SINCE MAR 1 1210 1483 -273 1162  
SINCE JUL 1 5530 6260 -730 5223  
 
COOLING  
YESTERDAY 6 1 5 0  
MONTH TO DATE 27 12 15 7  
SINCE MAR 1 33 18 15 15  
SINCE JAN 1 33 18 15 15    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 31 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 52 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 17.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 72 3:00 AM  
LOWEST 22 4:00 PM  
AVERAGE 47  
   
......................................................  
 
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 71 85 1998  
2001  
MINIMUM TEMPERATURE (F) 49 32 2002  
 
SUNRISE AND SUNSET  
MAY 17 2025...........SUNRISE 5:31 AM CDT SUNSET 8:09 PM CDT  
MAY 18 2025...........SUNRISE 5:30 AM CDT SUNSET 8:10 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