839  
CDUS43 KLOT 090641  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
141 AM CDT FRI MAY 09 2025  
   
...............................  
 
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR MAY 8 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 61 1:54 PM 89 2014 68 -7 79  
MINIMUM 37 11:59 PM 29 2020 46 -9 50  
AVERAGE 49 57 -8 65  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.17 2015 0.15 -0.15 0.00  
MONTH TO DATE 0.71 1.18 -0.47 1.39  
SINCE MAR 1 5.61 6.59 -0.98 8.16  
SINCE JAN 1 7.18 9.10 -1.92 10.61  
 
DEGREE DAYS  
HEATING  
YESTERDAY 16 9 7 0  
MONTH TO DATE 75 80 -5 29  
SINCE MAR 1 1179 1422 -243 1120  
SINCE JUL 1 5499 6199 -700 5181  
 
COOLING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 0 4 -4 2  
SINCE MAR 1 6 10 -4 10  
SINCE JAN 1 6 10 -4 10    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION NE (40)  
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION NE (40)  
AVERAGE WIND SPEED 14.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 71 5:00 AM  
LOWEST 44 4:00 PM  
AVERAGE 58  
   
......................................................  
 
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 68 86 2004  
MINIMUM TEMPERATURE (F) 46 26 2020  
 
SUNRISE AND SUNSET  
MAY 9 2025...........SUNRISE 5:39 AM CDT SUNSET 8:01 PM CDT  
MAY 10 2025...........SUNRISE 5:38 AM CDT SUNSET 8:02 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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