917  
CDUS43 KLOT 230636  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
136 AM CDT FRI JUL 23 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR JULY 22 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 86 4:45 PM 94 2001 84 2 85  
MINIMUM 61 2:20 AM 53 2000 64 -3 66  
2007  
AVERAGE 74 74 0 76  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.01 0.13 -0.13 0.01  
MONTH TO DATE 1.89 2.53 -0.64 1.29  
SINCE JUN 1 8.60 6.18 2.42 1.79  
SINCE JAN 1 13.75 18.44 -4.69 19.69  
 
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 9 9 0 11  
MONTH TO DATE 157 194 -37 256  
SINCE JUN 1 407 369 38 491  
SINCE JAN 1 488 425 63 542    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION S (200)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 4.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
HAZE  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 84 93 1999  
MINIMUM TEMPERATURE (F) 64 48 2000  
 
SUNRISE AND SUNSET  
JULY 23 2021..........SUNRISE 5:38 AM CDT SUNSET 8:20 PM CDT  
JULY 24 2021..........SUNRISE 5:39 AM CDT SUNSET 8:19 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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