156  
CDUS43 KLOT 312135  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
435 PM CDT SAT JUL 31 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR JULY 31 2021...  
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1997 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE  
VALUE (LST) VALUE VALUE FROM  
NORMAL    
............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 79 2:45 PM 98 2006 84 -5  
MINIMUM 58 5:05 AM 50 1997 63 -5  
AVERAGE 69 73 -4  
 
PRECIPITATION (IN)  
TODAY 0.00 1.05 2000 0.12 -0.12  
MONTH TO DATE 2.49 3.62 -1.13  
SINCE JUN 1 9.20 7.27 1.93  
SINCE JAN 1 14.35 19.53 -5.18  
 
DEGREE DAYS  
HEATING  
TODAY 0 0 0  
MONTH TO DATE 0 0 0  
SINCE JUN 1 11 33 -22  
SINCE JUL 1 0 0 0  
 
COOLING  
TODAY 4 8 -4  
MONTH TO DATE 261 272 -11  
SINCE JUN 1 511 447 64  
SINCE JAN 1 592 503 89    
............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION W (250)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION W (260)  
AVERAGE WIND SPEED 3.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 83 96 2006  
MINIMUM TEMPERATURE (F) 63 51 1998  
 
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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