516  
CDUS43 KLOT 100638  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
138 AM CDT MON MAY 10 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR MAY 9 2021...  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1997 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 58 5:29 PM 86 2004 68 -10 60  
MINIMUM 37 11:58 PM 26 2020 46 -9 26  
AVERAGE 48 57 -9 43  
 
PRECIPITATION (IN)  
YESTERDAY 0.23 1.15 0.15 0.08 0.00  
MONTH TO DATE 0.82 1.33 -0.51 0.16  
SINCE MAR 1 2.63 6.74 -4.11 7.72  
SINCE JAN 1 3.79 9.25 -5.46 10.37  
 
DEGREE DAYS  
HEATING  
YESTERDAY 17 9 8 22  
MONTH TO DATE 106 89 17 138  
SINCE MAR 1 1249 1431 -182 1430  
SINCE JUL 1 6048 6208 -160 6020  
 
COOLING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 6 5 1 0  
SINCE MAR 1 16 11 5 1  
SINCE JAN 1 16 11 5 1    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION NE (60)  
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION NE (40)  
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION NE (50)  
AVERAGE WIND SPEED 11.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 69 90 2011  
MINIMUM TEMPERATURE (F) 47 37 2008  
2020  
 
SUNRISE AND SUNSET  
MAY 10 2021...........SUNRISE 5:38 AM CDT SUNSET 8:02 PM CDT  
MAY 11 2021...........SUNRISE 5:37 AM CDT SUNSET 8:03 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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