215  
CDUS43 KLOT 192140  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
440 PM CDT MON MAY 19 2025  
   
...............................
 
 
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR MAY 19 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 54 2:54 PM 91 2012 72 -18 78  
MINIMUM 43 1:01 AM 37 2002 50 -7 60  
2008  
AVERAGE 49 61 -12 69  
 
PRECIPITATION (IN)  
TODAY 0.00 1.37 2005 0.15 -0.15 0.00  
MONTH TO DATE 0.72 2.75 -2.03 2.07  
SINCE MAR 1 5.62 8.16 -2.54 8.84  
SINCE JAN 1 7.19 10.67 -3.48 11.29  
 
DEGREE DAYS  
HEATING  
TODAY 16 6 10 0  
MONTH TO DATE 132 159 -27 71  
SINCE MAR 1 1236 1501 -265 1162  
SINCE JUL 1 5556 6278 -722 5223  
 
COOLING  
TODAY 0 2 -2 4  
MONTH TO DATE 27 18 9 19  
SINCE MAR 1 33 24 9 27  
SINCE JAN 1 33 24 9 27    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION E (70)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION NE (60)  
AVERAGE WIND SPEED 12.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 79 1:00 AM  
LOWEST 59 3:00 PM  
AVERAGE 69  
   
......................................................
 
 
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 91 2012  
MINIMUM TEMPERATURE (F) 50 32 2002  
 
SUNRISE AND SUNSET  
MAY 19 2025...........SUNRISE 5:29 AM CDT SUNSET 8:11 PM CDT  
MAY 20 2025...........SUNRISE 5:28 AM CDT SUNSET 8:12 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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