Weather Service Report


501 
CDUS46 KSEW 020832
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA                                  
131 AM PDT WED SEP 2 2015


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 1 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1945 TO 2015


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         67   1235 PM  91    1987  74     -7       74       
  MINIMUM         57   1159 PM  46    1973  55      2       55       
  AVERAGE         62                        64     -2       65      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.23          0.55 1978   0.04   0.19     0.00    
  MONTH TO DATE    0.23                      0.04   0.19     0.00    
  SINCE OCT 1     36.22                     36.03   0.19    36.88    
  SINCE JAN 1     19.84                     20.63  -0.79    29.89    
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        3                         2      1        0       
  MONTH TO DATE    3                         2      1        0       
  SINCE SEP 1      3                         2      1        0       
  SINCE JUL 1     15                        87    -72       23       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         1     -1        0       
  MONTH TO DATE    0                         1     -1        0       
  SINCE SEP 1      0                         1     -1        0       
  SINCE JAN 1    460                       169    291      323       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED  12   RESULTANT WIND DIRECTION   S (190)      
  HIGHEST WIND SPEED    20   HIGHEST WIND DIRECTION    SW (220)      
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION    SW (230)      
  AVERAGE WIND SPEED    11.2                                         

                                                                     
SKY COVER                                                            
  AVERAGE SKY COVER 0.9                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  RAIN                                                               
  LIGHT RAIN                                                         
  FOG                                                                

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    93           900 PM                                     
 LOWEST     72          1200 AM                                     
 AVERAGE    83                                                       

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

                                                                     
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   74        98      1988                    
 MINIMUM TEMPERATURE (F)   55        41      1960                    

                                                                     
SUNRISE AND SUNSET                                                   
SEPTEMBER  2 2015.....SUNRISE   629 AM PDT   SUNSET   748 PM PDT   
SEPTEMBER  3 2015.....SUNRISE   630 AM PDT   SUNSET   746 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