Climatological Report (Daily)
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000
CDUS46 KSEW 180837
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
1237 AM PST WED JAN 18 2017


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR JANUARY 17 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         49   1114 PM  58    1946  47      2       49
  MINIMUM         39    818 AM  15    1950  37      2       43
  AVERAGE         44                        42      2       46

PRECIPITATION (IN)
  YESTERDAY        1.74          2.39 2005   0.19   1.55     0.33
  MONTH TO DATE    2.74                      3.22  -0.48     2.48
  SINCE OCT 1     23.14                     18.62   4.52    26.87
  SINCE JAN 1      2.74                      3.22  -0.48     2.48

SNOWFALL (IN)
  YESTERDAY       MM             5.7  1954                   0.0
  MONTH TO DATE    3.0                                        T
  SINCE OCT 1      4.0                                        T
  SINCE JUL 1      4.0                                        T
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       21                        23     -2       19
  MONTH TO DATE  534                       399    135      401
  SINCE DEC 1   1364                      1154    210     1078
  SINCE JUL 1   2215                      2337   -122     2089

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1      0                         0      0        0
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED   3   RESULTANT WIND DIRECTION  SE (140)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION     E (110)
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION    SE (120)
  AVERAGE WIND SPEED     4.6


SKY COVER
  AVERAGE SKY COVER 1.0


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           400 PM
 LOWEST     70          1200 AM
 AVERAGE    85

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


THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   48        60      2005
 MINIMUM TEMPERATURE (F)   37         9      1950


SUNRISE AND SUNSET
JANUARY 18 2017.......SUNRISE   750 AM PST   SUNSET   450 PM PST
JANUARY 19 2017.......SUNRISE   749 AM PST   SUNSET   452 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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