144  
CDUS43 KLOT 310632  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
132 AM CDT SAT JUL 31 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR JULY 30 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 76 12:18 PM 98 1999 84 -8 83  
MINIMUM 60 4:36 AM 49 1997 63 -3 62  
AVERAGE 68 74 -6 73  
 
PRECIPITATION (IN)  
YESTERDAY T 0.84 0.13 -0.13 0.00  
MONTH TO DATE 2.49 3.50 -1.01 1.69  
SINCE JUN 1 9.20 7.15 2.05 2.19  
SINCE JAN 1 14.35 19.41 -5.06 20.09  
 
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 8 -5 8  
MONTH TO DATE 257 265 -8 341  
SINCE JUN 1 507 440 67 576  
SINCE JAN 1 588 496 92 627    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION NE (40)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NE (30)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NE (30)  
AVERAGE WIND SPEED 6.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 84 98 2006  
MINIMUM TEMPERATURE (F) 63 50 1997  
 
SUNRISE AND SUNSET  
JULY 31 2021..........SUNRISE 5:46 AM CDT SUNSET 8:12 PM CDT  
AUGUST 1 2021........SUNRISE 5:47 AM CDT SUNSET 8:11 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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