484  
CDUS43 KLOT 212136  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
435 PM CDT SAT OCT 21 2017  
 
   
...............................
 
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR OCTOBER 21 2017...  
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1997 TO 2017  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE  
VALUE (LST) VALUE VALUE FROM  
NORMAL    
...........................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 76 253 PM 79 2007 61 15  
MINIMUM 56 546 AM 29 2013 40 16  
2002  
AVERAGE 66 51 15  
 
PRECIPITATION (IN)  
TODAY 0.00 0.38 2006 0.11 -0.11  
MONTH TO DATE 6.77 2.23 4.54  
SINCE SEP 1 7.07 5.52 1.55  
SINCE JAN 1 33.63 31.15 2.48  
 
DEGREE DAYS  
HEATING  
TODAY 0 14 -14  
MONTH TO DATE 87 239 -152  
SINCE SEP 1 170 341 -171  
SINCE JUL 1 182 350 -168  
 
COOLING  
TODAY 1 0 1  
MONTH TO DATE 16 11 5  
SINCE SEP 1 145 90 55  
SINCE JAN 1 695 814 -119    
...........................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 13 RESULTANT WIND DIRECTION S (180)  
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION S (160)  
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 13.3  
 
 
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) 61 68 2000  
MINIMUM TEMPERATURE (F) 40 25 2013  
 
 
SUNRISE AND SUNSET  
OCTOBER 21 2017.......SUNRISE 713 AM CDT SUNSET 602 PM CDT  
OCTOBER 22 2017.......SUNRISE 714 AM CDT SUNSET 600 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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