383  
CDUS43 KLOT 190636  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
136 AM CDT MON JUL 19 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR JULY 18 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 84 1:48 PM 96 2012 84 0 89  
MINIMUM 60 3:04 AM 55 2004 64 -4 72  
2017  
2018  
AVERAGE 72 74 -2 81  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.65 0.12 -0.12 T  
MONTH TO DATE 1.89 2.04 -0.15 0.78  
SINCE JUN 1 8.60 5.69 2.91 1.28  
SINCE JAN 1 13.75 17.95 -4.20 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 7 9 -2 16  
MONTH TO DATE 125 158 -33 216  
SINCE JUN 1 375 333 42 451  
SINCE JAN 1 456 389 67 502    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION NE (40)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NE (30)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION E (80)  
AVERAGE WIND SPEED 7.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 84 97 2011  
MINIMUM TEMPERATURE (F) 64 54 2014  
 
SUNRISE AND SUNSET  
JULY 19 2021..........SUNRISE 5:35 AM CDT SUNSET 8:24 PM CDT  
JULY 20 2021..........SUNRISE 5:36 AM CDT SUNSET 8:23 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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