Weather in SeaTac, Washington, United States

7-Day Detailed Weather Forecast for SeaTac

Tonight

Temperature: 35°F

Wind Speed: 6 mph

Wind Direction: SSE

Forecast: Showers and thunderstorms likely before 7pm, then a slight chance of thunderstorms and rain and snow showers between 7pm and 10pm, then a slight chance of rain and snow showers between 10pm and 11pm, then areas of frost. Mostly cloudy, with a low around 35. South southeast wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Thursday

Temperature: 55°F

Wind Speed: 3 to 7 mph

Wind Direction: SSW

Forecast: Patchy frost before 8am. Sunny, with a high near 55. South southwest wind 3 to 7 mph.

Thursday Night

Temperature: 40°F

Wind Speed: 3 to 7 mph

Wind Direction: S

Forecast: Partly cloudy, with a low around 40. South wind 3 to 7 mph.

Friday

Temperature: 57°F

Wind Speed: 3 mph

Wind Direction: WSW

Forecast: Mostly sunny, with a high near 57. West southwest wind around 3 mph.

Friday Night

Temperature: 42°F

Wind Speed: 3 mph

Wind Direction: NNE

Forecast: Mostly cloudy, with a low around 42. North northeast wind around 3 mph.

Saturday

Temperature: 63°F

Wind Speed: 3 mph

Wind Direction: N

Forecast: Mostly cloudy, with a high near 63.

Saturday Night

Temperature: 47°F

Wind Speed: 3 mph

Wind Direction: NNE

Forecast: A slight chance of rain after 11pm. Mostly cloudy, with a low around 47.

Sunday

Temperature: 65°F

Wind Speed: 2 to 6 mph

Wind Direction: NNE

Forecast: A slight chance of rain before 5pm. Mostly cloudy, with a high near 65.

Sunday Night

Temperature: 48°F

Wind Speed: 6 mph

Wind Direction: N

Forecast: Mostly cloudy, with a low around 48.

Monday

Temperature: 67°F

Wind Speed: 3 to 7 mph

Wind Direction: N

Forecast: Partly sunny, with a high near 67.

Monday Night

Temperature: 49°F

Wind Speed: 7 mph

Wind Direction: NW

Forecast: Mostly cloudy, with a low around 49.

Tuesday

Temperature: 64°F

Wind Speed: 5 to 8 mph

Wind Direction: SSW

Forecast: A chance of rain after 11am. Partly sunny, with a high near 64.

Tuesday Night

Temperature: 48°F

Wind Speed: 8 mph

Wind Direction: SW

Forecast: A chance of rain. Mostly cloudy, with a low around 48.

Wednesday

Temperature: 59°F

Wind Speed: 8 mph

Wind Direction: SW

Forecast: A chance of rain. Mostly cloudy, with a high near 59.