630  
CDUS43 KLOT 120718  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
218 AM CDT MON JUL 12 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR JULY 11 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 70 5:25 PM 90 2005 84 -14 84  
MINIMUM 66 11:58 PM 50 1997 63 3 66  
AVERAGE 68 74 -6 75  
 
PRECIPITATION (IN)  
YESTERDAY 0.05 0.93 0.12 -0.07 0.17  
MONTH TO DATE 0.29 1.21 -0.92 0.17  
SINCE JUN 1 7.00 4.86 2.14 0.67  
SINCE JAN 1 12.15 17.12 -4.97 18.57  
 
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 3 9 -6 10  
MONTH TO DATE 76 95 -19 149  
SINCE JUN 1 326 270 56 384  
SINCE JAN 1 407 326 81 435    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 11 RESULTANT WIND DIRECTION NE (50)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION NE (60)  
AVERAGE WIND SPEED 11.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
RAIN  
LIGHT RAIN  
FOG  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 84 90 2012  
MINIMUM TEMPERATURE (F) 63 54 2002  
 
SUNRISE AND SUNSET  
JULY 12 2021..........SUNRISE 5:29 AM CDT SUNSET 8:28 PM CDT  
JULY 13 2021..........SUNRISE 5:30 AM CDT SUNSET 8:28 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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