758  
CDUS43 KLOT 202157  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
457 PM CDT TUE MAY 20 2025  
   
...............................  
 
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR MAY 20 2025...  
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 57 2:59 PM 91 2012 72 -15 84  
MINIMUM 50 8:39 AM 32 2002 50 0 57  
AVERAGE 54 61 -7 71  
 
PRECIPITATION (IN)  
TODAY 0.40 0.73 2013 0.14 0.26 0.05  
2022  
MONTH TO DATE 1.12 2.89 -1.77 2.12  
SINCE MAR 1 6.02 8.30 -2.28 8.89  
SINCE JAN 1 7.59 10.81 -3.22 11.34  
 
DEGREE DAYS  
HEATING  
TODAY 11 6 5 0  
MONTH TO DATE 143 165 -22 71  
SINCE MAR 1 1247 1507 -260 1162  
SINCE JUL 1 5567 6284 -717 5223  
 
COOLING  
TODAY 0 2 -2 6  
MONTH TO DATE 27 20 7 25  
SINCE MAR 1 33 26 7 33  
SINCE JAN 1 33 26 7 33    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 29 HIGHEST WIND DIRECTION E (80)  
HIGHEST GUST SPEED 41 HIGHEST GUST DIRECTION E (90)  
AVERAGE WIND SPEED 14.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 89 4:00 AM  
LOWEST 67 3:00 AM  
AVERAGE 78  
   
......................................................  
 
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 73 89 2024  
MINIMUM TEMPERATURE (F) 51 26 2002  
 
SUNRISE AND SUNSET  
MAY 20 2025...........SUNRISE 5:28 AM CDT SUNSET 8:12 PM CDT  
MAY 21 2025...........SUNRISE 5:27 AM CDT SUNSET 8:13 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