National Weather Service forecast

SeaTac, Washington Weather

42°Tonight: Partly Cloudy
Wind SSE 3 mph
7-DayHourlyRadar

SeaTac 7-Day Forecast

  1. Tonight
    42°F
    Partly Cloudy
    1% chance of precipitation

    Partly cloudy, with a low around 42. South southeast wind around 3 mph.

  2. Wednesday
    58°F
    Partly Sunny then Chance Light Rain
    46% chance of precipitation

    A chance of rain after 4pm. Partly sunny. High near 58, with temperatures falling to around 55 in the afternoon. South wind 3 to 8 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

  3. Wednesday Night
    48°F
    Light Rain
    91% chance of precipitation

    Rain before 2am. Mostly cloudy. Low around 48, with temperatures rising to around 50 overnight. South southwest wind 8 to 14 mph. Chance of precipitation is 90%. New rainfall amounts less than a tenth of an inch possible.

  4. Thursday
    58°F
    Partly Sunny
    6% chance of precipitation

    Partly sunny, with a high near 58. South southwest wind 8 to 12 mph.

  5. Thursday Night
    46°F
    Mostly Cloudy then Light Rain Likely
    62% chance of precipitation

    Rain likely after 4am. Mostly cloudy, with a low around 46. South wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.

  6. Friday
    56°F
    Light Rain
    79% chance of precipitation

    Rain. Cloudy, with a high near 56. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.

  7. Friday Night
    48°F
    Light Rain Likely
    70% chance of precipitation

    Rain likely. Cloudy, with a low around 48.

  8. Saturday
    62°F
    Chance Light Rain
    31% chance of precipitation

    A chance of rain. Mostly cloudy, with a high near 62.

  9. Saturday Night
    50°F
    Light Rain
    81% chance of precipitation

    Rain. Mostly cloudy, with a low around 50.

  10. Sunday
    56°F
    Light Rain Likely
    62% chance of precipitation

    Rain likely. Mostly cloudy, with a high near 56.

  11. Sunday Night
    44°F
    Slight Chance Light Rain
    15% chance of precipitation

    A slight chance of rain. Mostly cloudy, with a low around 44.

  12. Monday
    56°F
    Chance Light Rain
    39% chance of precipitation

    A chance of rain. Mostly cloudy, with a high near 56.

  13. Monday Night
    47°F
    Light Rain Likely
    56% chance of precipitation

    Rain likely. Mostly cloudy, with a low around 47.

  14. Tuesday
    59°F
    Light Rain Likely
    56% chance of precipitation

    Rain likely. Cloudy, with a high near 59.

Issued by the National Weather Service (SEW office), updated .

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About SeaTac

Population (2020 Census)
31,454
Coordinates
47.444, -122.299
Elevation
358 ft
NWS forecast office
SEW
Time zone
America/Los Angeles
Sunrise today
6:55 AM PST
Sunset today
4:49 PM PST
Daylight today
9 h 54 min

SeaTac Weather Questions

What is the weather forecast for SeaTac, Washington?

Tonight: Partly cloudy, with a low around 42. South southeast wind around 3 mph. Wednesday: A chance of rain after 4pm. Partly sunny. High near 58, with temperatures falling to around 55 in the afternoon. South wind 3 to 8 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

Will it rain or snow in SeaTac this week?

The best chance of precipitation is Wednesday Night at 91%. Periods with a 30% chance or more: Wednesday (46%), Wednesday Night (91%), Thursday Night (62%), Friday (79%), Friday Night (70%), Saturday (31%), Saturday Night (81%), Sunday (62%), Monday (39%), Monday Night (56%), Tuesday (56%).

How warm and how cold will it get in SeaTac this week?

The warmest day is Saturday, with a high near 62°F. The coldest night is Tonight, with a low near 42°F.

What time are sunrise and sunset in SeaTac today?

Sunrise is at 6:55 AM PST and sunset is at 4:49 PM PST, for 9 h 54 min of daylight.

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