Climatological Report (Daily)
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000
CDUS46 KSEW 170120
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
620 PM PDT MON OCT 16 2017


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 16 2017...
VALID TODAY AS OF 0600 PM LOCAL TIME.

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)
 TODAY
  MAXIMUM         62    136 PM  70    2002  60      2       60
                                      1974
  MINIMUM         42    437 AM  32    1946  46     -4       50
  AVERAGE         52                        53     -1       55

PRECIPITATION (IN)
  TODAY            0.00          0.78 2009   0.11  -0.11     0.56
  MONTH TO DATE    0.58                      1.39  -0.81     5.72
  SINCE OCT 1      0.58                      1.39  -0.81     5.72
  SINCE JAN 1     29.59                     23.48   6.11    30.50

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

DEGREE DAYS
 HEATING
  TODAY           13                        12      1       10
  MONTH TO DATE  188                       163     25      148
  SINCE SEP 1    266                       295    -29      257
  SINCE JUL 1    273                       380   -107      278

 COOLING
  TODAY            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   7   RESULTANT WIND DIRECTION   S (190)
  HIGHEST WIND SPEED    22   HIGHEST WIND DIRECTION    SW (220)
  HIGHEST GUST SPEED    26   HIGHEST GUST DIRECTION    SW (210)
  AVERAGE WIND SPEED     8.8


SKY COVER
  AVERAGE SKY COVER 0.3


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           700 AM
 LOWEST     62          1200 PM
 AVERAGE    81

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


THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   59        74      1989
 MINIMUM TEMPERATURE (F)   46        34      1949


SUNRISE AND SUNSET
OCTOBER 16 2017.......SUNRISE   730 AM PDT   SUNSET   619 PM PDT
OCTOBER 17 2017.......SUNRISE   731 AM PDT   SUNSET   617 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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