Climatological Report (Daily)
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959
CDUS46 KSEW 210119
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
519 PM PST MON NOV 20 2017


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR NOVEMBER 20 2017...
VALID TODAY AS OF 0500 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         50    322 PM  64    1987  50      0       57
  MINIMUM         44   1216 AM  24    1946  39      5       47
  AVERAGE         47                        44      3       52

PRECIPITATION (IN)
  TODAY            0.63          3.41 1959   0.23   0.40     0.01
  MONTH TO DATE    5.37                      4.35   1.02     4.37
  SINCE OCT 1     10.17                      7.83   2.34    14.42
  SINCE JAN 1     39.18                     29.92   9.26    39.20

SNOWFALL (IN)
  TODAY           MM             5.2  1960                   0.0
  MONTH TO DATE    0.4                                       0.0
  SINCE OCT 1      0.4                                       0.0
  SINCE JUL 1      0.4                                       0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  TODAY           18                        21     -3       13
  MONTH TO DATE  386                       369     17      233
  SINCE SEP 1    823                       881    -58      648
  SINCE JUL 1    830                       966   -136      669

 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   4   RESULTANT WIND DIRECTION  SW (210)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION    SW (220)
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION    SW (230)
  AVERAGE WIND SPEED     8.6


SKY COVER
  AVERAGE SKY COVER 0.8


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  HEAVY RAIN
  RAIN
  LIGHT RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           200 AM
 LOWEST     66           400 PM
 AVERAGE    80

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


THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   50        62      1954
 MINIMUM TEMPERATURE (F)   39        21      1985
                                             1977


SUNRISE AND SUNSET
NOVEMBER 20 2017......SUNRISE   722 AM PST   SUNSET   428 PM PST
NOVEMBER 21 2017......SUNRISE   723 AM PST   SUNSET   427 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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