Weather Service Report


284 
CDUS46 KSEW 260840
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA                                  
137 AM PDT MON SEP 26 2016


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 25 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1945 TO 2016


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         76    416 PM  85    1991  68      8       60       
  MINIMUM         58    444 AM  36    1972  50      8       55       
  AVERAGE         67                        59      8       58      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          0.63 1950   0.06  -0.06     0.08    
  MONTH TO DATE    1.03                      1.17  -0.14     0.83    
  SINCE OCT 1     49.15                     37.16  11.99    36.82    
  SINCE JAN 1     24.76                     21.76   3.00    20.44    
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        0                         6     -6        7       
  MONTH TO DATE   84                        95    -11      108       
  SINCE SEP 1     84                        95    -11      108       
  SINCE JUL 1    105                       180    -75      120       
                                                                     
 COOLING                                                             
  YESTERDAY        2                         0      2        0       
  MONTH TO DATE    3                        19    -16       14       
  SINCE SEP 1      3                        19    -16       14       
  SINCE JAN 1    291                       187    104      474       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   4   RESULTANT WIND DIRECTION  NW (330)      
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION     N (350)      
  HIGHEST GUST SPEED    16   HIGHEST GUST DIRECTION     N (350)      
  AVERAGE WIND SPEED     5.7                                         

                                                                     
SKY COVER                                                            
  AVERAGE SKY COVER 0.8                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  NO SIGNIFICANT WEATHER WAS OBSERVED.                               

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    72           400 AM                                     
 LOWEST     36           400 PM                                     
 AVERAGE    54                                                       

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

                                                                     
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   67        78      2006                    
                                             1991                    
                                             1970                    
 MINIMUM TEMPERATURE (F)   50        39      1972                    

                                                                     
SUNRISE AND SUNSET                                                   
SEPTEMBER 26 2016.....SUNRISE   702 AM PDT   SUNSET   657 PM PDT   
SEPTEMBER 27 2016.....SUNRISE   704 AM PDT   SUNSET   655 PM PDT   

                                                                    
-  INDICATES NEGATIVE NUMBERS.                                      
R  INDICATES RECORD WAS SET OR TIED.                                
MM INDICATES DATA IS MISSING.                                       
T  INDICATES TRACE AMOUNT.                                          




$$


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Western Regional Climate Center, wrcc@dri.edu