Weather Service Report


391 
CDUS46 KSEW 010120
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA                                  
620 PM PDT THU JUL 31 2014


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR JULY 31 2014...
VALID TODAY AS OF 0600 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1945 TO 2014


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 TODAY                                                               
  MAXIMUM         87    359 PM  93    1965  77     10       71       
                                      1959                          
  MINIMUM         64    509 AM  47    1954  57      7       56       
  AVERAGE         76                        67      9       64      
                                                                     
PRECIPITATION (IN)                                                   
  TODAY            0.00          0.26 1955   0.02  -0.02     0.00    
  MONTH TO DATE    0.77                      0.70   0.07      T      
  SINCE OCT 1     35.07                     35.11  -0.04    39.89    
  SINCE JAN 1     28.08                     19.71   8.37    18.05    
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  TODAY            0                         1     -1        1       
  MONTH TO DATE   14                        49    -35        9       
  SINCE JUN 1    108                       193    -85       58       
  SINCE JUL 1     14                        49    -35        9       
                                                                     
 COOLING                                                             
  TODAY           11                         3      8        0       
  MONTH TO DATE  152                        71     81      113       
  SINCE JUN 1    163                        92     71      162       
  SINCE JAN 1    178                        98     80      175       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   8   RESULTANT WIND DIRECTION   N (0)        
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION    NE (40)       
  HIGHEST GUST SPEED    MM   HIGHEST GUST DIRECTION    MM            
  AVERAGE WIND SPEED     9.0                                         

                                                                     
SKY COVER                                                            
  AVERAGE SKY COVER 0.2                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    52           400 AM                                     
 LOWEST     28           300 PM                                     
 AVERAGE    40                                                       

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

                                                                     
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   77        92      1949                    
 MINIMUM TEMPERATURE (F)   57        50      1954                    
                                             1953                    

                                                                     
SUNRISE AND SUNSET                                                   
JULY 31 2014..........SUNRISE   546 AM PDT   SUNSET   844 PM PDT   
AUGUST  1 2014........SUNRISE   547 AM PDT   SUNSET   843 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