Weather Service Report


140 
CDUS46 KSEW 240835
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA                                  
134 AM PDT FRI MAR 24 2017


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR MARCH 23 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1945 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         58    334 PM  68    1979  55      3       51       
  MINIMUM         39    612 AM  28    1954  40     -1       45       
  AVERAGE         49                        47      2       48      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.26          0.94 1971   0.12   0.14     0.23    
  MONTH TO DATE    5.87                      2.83   3.04     5.21    
  SINCE OCT 1     39.34                     27.30  12.04    43.02    
  SINCE JAN 1     18.94                     11.90   7.04    18.63    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0           T    1985                   0.0     
  MONTH TO DATE    T                                         0.0     
  SINCE OCT 1     11.2                                        T      
  SINCE JUL 1     11.2                                        T      
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       16                        18     -2       17       
  MONTH TO DATE  448                       437     11      366       
  SINCE MAR 1    448                       437     11      366       
  SINCE JUL 1   3621                      3691    -70     3210       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE MAR 1      0                         0      0        0       
  SINCE JAN 1      0                         0      0        0       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   5   RESULTANT WIND DIRECTION   S (190)      
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION    SW (220)      
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION    SW (220)      
  AVERAGE WIND SPEED     7.8                                         

                                                                     
SKY COVER                                                            
  AVERAGE SKY COVER 0.8                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST   100          1000 PM                                     
 LOWEST     43           300 PM                                     
 AVERAGE    72                                                       

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

                                                                     
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   55        68      2010                    
 MINIMUM TEMPERATURE (F)   40        30      1975                    
                                             1965                    

                                                                     
SUNRISE AND SUNSET                                                   
MARCH 24 2017.........SUNRISE   703 AM PDT   SUNSET   728 PM PDT   
MARCH 25 2017.........SUNRISE   701 AM PDT   SUNSET   730 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