Climatological Report (Daily)
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000
CDUS46 KSEW 220118
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
618 PM PDT SAT OCT 21 2017


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 21 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         51    459 PM  72    1965  58     -7       57
  MINIMUM         45    743 AM  32    1949  45      0       48
  AVERAGE         48                        51     -3       53

PRECIPITATION (IN)
  TODAY            0.79          1.29 1963   0.13   0.66     0.02
  MONTH TO DATE    3.95                      1.98   1.97     7.40
  SINCE OCT 1      3.95                      1.98   1.97     7.40
  SINCE JAN 1     32.96                     24.07   8.89    32.18

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           17                        14      3       12
  MONTH TO DATE  252                       229     23      204
  SINCE SEP 1    330                       361    -31      313
  SINCE JUL 1    337                       446   -109      334

 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   9   RESULTANT WIND DIRECTION  SE (130)
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION    SE (150)
  HIGHEST GUST SPEED    18   HIGHEST GUST DIRECTION    SE (150)
  AVERAGE WIND SPEED     9.0


SKY COVER
  AVERAGE SKY COVER 1.0


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    96           500 PM
 LOWEST     76          1200 AM
 AVERAGE    86

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


THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   57        70      1965
 MINIMUM TEMPERATURE (F)   45        34      1950


SUNRISE AND SUNSET
OCTOBER 21 2017.......SUNRISE   737 AM PDT   SUNSET   610 PM PDT
OCTOBER 22 2017.......SUNRISE   739 AM PDT   SUNSET   608 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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