317  
CDUS43 KLOT 170633  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
133 AM CDT MON MAY 17 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR MAY 16 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 71 1:00 PM 88 2001 71 0 69  
MINIMUM 48 4:37 AM 34 2011 49 -1 50  
AVERAGE 60 60 0 60  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.80 0.14 -0.14 0.33  
MONTH TO DATE 0.86 2.33 -1.47 4.98  
SINCE MAR 1 2.67 7.74 -5.07 12.54  
SINCE JAN 1 3.83 10.25 -6.42 15.19  
 
DEGREE DAYS  
HEATING  
YESTERDAY 5 7 -2 5  
MONTH TO DATE 199 141 58 214  
SINCE MAR 1 1342 1483 -141 1506  
SINCE JUL 1 6141 6260 -119 6096  
 
COOLING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 6 12 -6 1  
SINCE MAR 1 16 18 -2 2  
SINCE JAN 1 16 18 -2 2    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION S (160)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION SW (220)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION SW (230)  
AVERAGE WIND SPEED 3.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 71 85 1998  
2001  
MINIMUM TEMPERATURE (F) 49 32 2002  
 
SUNRISE AND SUNSET  
MAY 17 2021...........SUNRISE 5:31 AM CDT SUNSET 8:09 PM CDT  
MAY 18 2021...........SUNRISE 5:30 AM CDT SUNSET 8:10 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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