Climatological Report (Daily)
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CDUS46 KSEW 210838
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
1237 AM PST SAT JAN 21 2017


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR JANUARY 20 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         52   1212 PM  64    1981  48      4       50
  MINIMUM         37    249 AM  16    1962  37      0       40
                                      1954
  AVERAGE         45                        42      3       45

PRECIPITATION (IN)
  YESTERDAY        0.00          1.66 1972   0.19  -0.19     0.27
  MONTH TO DATE    4.04                      3.78   0.26     3.30
  SINCE OCT 1     24.44                     19.18   5.26    27.69
  SINCE JAN 1      4.04                      3.78   0.26     3.30

SNOWFALL (IN)
  YESTERDAY        0.0           1.5  1951                   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       20                        23     -3       20
  MONTH TO DATE  588                       468    120      458
  SINCE DEC 1   1418                      1223    195     1135
  SINCE JUL 1   2269                      2406   -137     2146

 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   8   RESULTANT WIND DIRECTION   E (110)
  HIGHEST WIND SPEED    26   HIGHEST WIND DIRECTION     E (110)
  HIGHEST GUST SPEED    36   HIGHEST GUST DIRECTION     E (100)
  AVERAGE WIND SPEED     9.3


SKY COVER
  AVERAGE SKY COVER 0.8


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    85           300 AM
 LOWEST     44          1200 PM
 AVERAGE    65

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


THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   48        62      1981
 MINIMUM TEMPERATURE (F)   37        13      1962


SUNRISE AND SUNSET
JANUARY 21 2017.......SUNRISE   747 AM PST   SUNSET   455 PM PST
JANUARY 22 2017.......SUNRISE   746 AM PST   SUNSET   456 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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