177  
CDUS43 KLOT 092139  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
439 PM CDT TUE MAY 09 2023  
   
...............................
 
 
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR MAY 9 2023...  
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1997 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 72 1:31 PM 86 2004 68 4 82  
MINIMUM 45 3:15 AM 26 2020 46 -1 56  
AVERAGE 59 57 2 69  
 
PRECIPITATION (IN)  
TODAY 0.00 1.15 2003 0.15 -0.15 0.00  
MONTH TO DATE 0.33 1.33 -1.00 1.33  
SINCE MAR 1 4.61 6.74 -2.13 9.39  
SINCE JAN 1 9.65 9.25 0.40 11.65  
 
DEGREE DAYS  
HEATING  
TODAY 6 9 -3 0  
MONTH TO DATE 76 89 -13 119  
SINCE MAR 1 1364 1431 -67 1471  
SINCE JUL 1 5714 6208 -494 6032  
 
COOLING  
TODAY 0 1 -1 4  
MONTH TO DATE 13 5 8 4  
SINCE MAR 1 24 11 13 8  
SINCE JAN 1 24 11 13 8    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION E (80)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION E (80)  
AVERAGE WIND SPEED 5.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 3:00 AM  
LOWEST 42 2:00 PM  
AVERAGE 70  
   
......................................................
 
 
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 69 90 2011  
MINIMUM TEMPERATURE (F) 47 35 2021  
 
SUNRISE AND SUNSET  
MAY 9 2023...........SUNRISE 5:39 AM CDT SUNSET 8:00 PM CDT  
MAY 10 2023...........SUNRISE 5:38 AM CDT SUNSET 8:01 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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