Weather Service Report


560 
CDUS46 KSEW 190826
CLISEA

CLIMATE REPORT 
NATIONAL WEATHER SERVICE SEATTLE
126 AM PDT MON APR 19 2021

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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR APRIL 18 2021...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1945 TO 2021


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST      
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL           
...................................................................
TEMPERATURE (F)                                                          
 YESTERDAY                                                           
  MAXIMUM         79    536 PM  89    2016  59     20       57       
  MINIMUM         50    619 AM  34    1950  42      8       48       
                                      1961                           
                                      1964                           
  AVERAGE         65                        51     14       53     

PRECIPITATION (IN)                                                    
  YESTERDAY        0.00          0.48 2017   0.09  -0.09     0.05     
  MONTH TO DATE    0.27                      1.77  -1.50     0.06     
  SINCE OCT 1     31.12                     29.96   1.16    29.85     
  SINCE JAN 1     16.31                     14.56   1.75    16.51     

SNOWFALL (IN)                                                              
  YESTERDAY        0.0          MM      MM                   0.0      
  MONTH TO DATE    0.0                                       0.0      
  SINCE OCT 1     12.9                                       0.7      
  SINCE JUL 1     12.9                                       0.7      
  SNOW DEPTH       0                                                 

DEGREE DAYS                                                           
 HEATING                                                              
  YESTERDAY        0                        14    -14       12        
  MONTH TO DATE  247                       280    -33      250        
  SINCE MAR 1    844                       854    -10      868        
  SINCE JUL 1   3741                      4108   -367     3800        

 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   4   RESULTANT WIND DIRECTION  SW (210)       
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION     W (270)       
  HIGHEST GUST SPEED    18   HIGHEST GUST DIRECTION     W (250)       
  AVERAGE WIND SPEED     5.3                                        


SKY COVER                                                             
  AVERAGE SKY COVER 0.1                                                 


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    59           500 AM                                      
 LOWEST     22           500 PM                                      
 AVERAGE    41                                                        

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


THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   59        84      2016                      
 MINIMUM TEMPERATURE (F)   42        33      1961                      


SUNRISE AND SUNSET                                                    
APRIL 19 2021.........SUNRISE   613 AM PDT   SUNSET   805 PM PDT     
APRIL 20 2021.........SUNRISE   611 AM PDT   SUNSET   806 PM PDT     


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




$$

Return to Home page


Western Regional Climate Center, wrcc@dri.edu