013  
CDUS43 KLOT 170637  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
137 AM CDT SAT JUL 17 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR JULY 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 75 3:25 PM 96 2012 84 -9 83  
MINIMUM 64 8:07 PM 51 2014 64 0 66  
AVERAGE 70 74 -4 75  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.99 0.12 -0.12 0.01  
MONTH TO DATE 1.89 1.81 0.08 0.78  
SINCE JUN 1 8.60 5.46 3.14 1.28  
SINCE JAN 1 13.75 17.72 -3.97 19.18  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 11 33 -22 16  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY 5 9 -4 10  
MONTH TO DATE 112 140 -28 190  
SINCE JUN 1 362 315 47 425  
SINCE JAN 1 443 371 72 476    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION NE (30)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION N (20)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NE (40)  
AVERAGE WIND SPEED 8.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 84 97 2012  
MINIMUM TEMPERATURE (F) 64 52 2014  
 
SUNRISE AND SUNSET  
JULY 17 2021..........SUNRISE 5:33 AM CDT SUNSET 8:25 PM CDT  
JULY 18 2021..........SUNRISE 5:34 AM CDT SUNSET 8:24 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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