Weather Service Report


272 
CDUS46 KSEW 200836
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA                                  
1235 AM PST MON NOV 20 2017


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR NOVEMBER 19 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         53    133 PM  60    2008  50      3       57       
                                      1987                          
                                      1965                          
  MINIMUM         39    250 AM  23    1946  39      0       48       
  AVERAGE         46                        45      1       53      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.58          2.13 2012   0.24   0.34     0.04    
  MONTH TO DATE    4.74                      4.12   0.62     4.36    
  SINCE OCT 1      9.54                      7.60   1.94    14.41    
  SINCE JAN 1     38.55                     29.69   8.86    39.19    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0           7.0  1996                   0.0     
  MONTH TO DATE    0.4                                       0.0     
  SINCE OCT 1      0.4                                       0.0     
  SINCE JUL 1      0.4                                       0.0     
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       19                        20     -1       12       
  MONTH TO DATE  368                       348     20      220       
  SINCE SEP 1    805                       860    -55      635       
  SINCE JUL 1    812                       945   -133      656       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE SEP 1     75                        21     54        3       
  SINCE JAN 1    392                       189    203      291       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   6   RESULTANT WIND DIRECTION   S (170)      
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION    SW (220)      
  HIGHEST GUST SPEED    23   HIGHEST GUST DIRECTION    SW (220)      
  AVERAGE WIND SPEED     7.4                                         

                                                                     
SKY COVER                                                            
  AVERAGE SKY COVER 0.9                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    96           900 PM                                     
 LOWEST     41          1000 AM                                     
 AVERAGE    69                                                       

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

                                                                     
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   50        64      1987                    
 MINIMUM TEMPERATURE (F)   39        24      1946                    

                                                                     
SUNRISE AND SUNSET                                                   
NOVEMBER 20 2017......SUNRISE   722 AM PST   SUNSET   428 PM PST   
NOVEMBER 21 2017......SUNRISE   723 AM PST   SUNSET   427 PM PST   

                                                                    
-  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