642  
CDUS43 KLOT 150633  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
133 AM CDT SUN AUG 15 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR AUGUST 14 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 80 4:11 PM 89 2020 82 -2 89  
MINIMUM 56 11:54 PM 46 2004 62 -6 63  
AVERAGE 68 72 -4 76  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.33 0.13 -0.13 0.00  
MONTH TO DATE 1.82 1.77 0.05 0.45  
SINCE JUN 1 11.02 9.04 1.98 2.64  
SINCE JAN 1 16.17 21.30 -5.13 20.54  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 4  
SINCE JUN 1 11 37 -26 20  
SINCE JUL 1 0 4 -4 4  
 
COOLING  
YESTERDAY 3 8 -5 11  
MONTH TO DATE 127 112 15 99  
SINCE JUN 1 638 559 79 682  
SINCE JAN 1 719 615 104 733    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION NE (40)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION E (80)  
AVERAGE WIND SPEED 4.8  
 
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) 82 89 2000  
2009  
2015  
MINIMUM TEMPERATURE (F) 62 44 2004  
 
SUNRISE AND SUNSET  
AUGUST 15 2021........SUNRISE 6:01 AM CDT SUNSET 7:53 PM CDT  
AUGUST 16 2021........SUNRISE 6:02 AM CDT SUNSET 7:51 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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