Climatological Report (Daily)
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CDUS46 KSEW 200834
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
133 AM PDT FRI OCT 20 2017


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 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         54   1046 AM  72    2014  58     -4       58
  MINIMUM         50   1159 PM  28    1949  45      5       45
  AVERAGE         52                        52      0       52

PRECIPITATION (IN)
  YESTERDAY        1.04          1.05 1958   0.12   0.92     0.22
  MONTH TO DATE    3.03                      1.73   1.30     6.19
  SINCE OCT 1      3.03                      1.73   1.30     6.19
  SINCE JAN 1     32.04                     23.82   8.22    30.97

SNOWFALL (IN)
  YESTERDAY        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
  YESTERDAY       13                        13      0       13
  MONTH TO DATE  220                       202     18      182
  SINCE SEP 1    298                       334    -36      291
  SINCE JUL 1    305                       419   -114      312

 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  10   RESULTANT WIND DIRECTION   S (170)
  HIGHEST WIND SPEED    20   HIGHEST WIND DIRECTION     S (170)
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION     S (180)
  AVERAGE WIND SPEED    10.8


SKY COVER
  AVERAGE SKY COVER 1.0


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           500 AM
 LOWEST     89           300 PM
 AVERAGE    95

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


THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   58        69      1987
 MINIMUM TEMPERATURE (F)   45        29      1949


SUNRISE AND SUNSET
OCTOBER 20 2017.......SUNRISE   736 AM PDT   SUNSET   611 PM PDT
OCTOBER 21 2017.......SUNRISE   737 AM PDT   SUNSET   610 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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