835 
CDUS43 KLOT 212150
CLIDPA


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL                                  
450 PM CDT FRI JUL 21 2017


................................... 

...THE DU PAGE  AIRPORT CLIMATE SUMMARY FOR JULY 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         86    244 PM  97    2011  85      1                
  MINIMUM         70    517 AM  52    2007  63      7                
  AVERAGE         78                        74      4               
                                                                     
PRECIPITATION (IN)                                                   
  TODAY            0.00          1.83 2001   0.17  -0.17             
  MONTH TO DATE    2.38                      2.56  -0.18             
  SINCE JUN 1      5.56                      6.45  -0.89             
  SINCE JAN 1     22.91                     19.47   3.44             
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  TODAY            0                         0      0                
  MONTH TO DATE    1                         0      1                
  SINCE JUN 1     18                        36    -18                
  SINCE JUL 1      1                         0      1                
                                                                     
 COOLING                                                             
  TODAY           13                         9      4                
  MONTH TO DATE  156                       189    -33                
  SINCE JUN 1    335                       367    -32                
  SINCE JAN 1    358                       413    -55                
...............................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   3   RESULTANT WIND DIRECTION   S (170)      
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION    SW (230)      
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION    SW (240)      
  AVERAGE WIND SPEED     5.6                                         


                                                                     
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)   85        94      2001                    
 MINIMUM TEMPERATURE (F)   63        53      2007                    
                                             2000                    

                                                                     
SUNRISE AND SUNSET                                                   
JULY 21 2017..........SUNRISE   536 AM CDT   SUNSET   822 PM CDT   
JULY 22 2017..........SUNRISE   537 AM CDT   SUNSET   821 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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