Severe Thunderstorms and Heavy Rainfall for the Southwest; Heat Spreads Across the Center of the Nation

Moisture will continue to move into areas of the West. This will increase showers and thunderstorms coverage and intensity, with the risk of flash flooding and damaging wind gusts. Meanwhile, heat across the Southwest will expand into the center of the nation this weekend into early next week. Trends favor this heat will spread across the Ohio Valley, mid-Atlantic next week. Read More >

For More Weather Information:

Seattle, WA Local Forecast Office

17NM S Seattle WA

Marine Point Forecast

[NOTICE]

This Afternoon
⇑SW 6kt
< 1ft
Tonight
SW 8kt
< 1ft
Sunday
Light Wind
< 1ft
Sunday Night
Light Wind
< 1ft
Monday
Light Wind
< 1ft
Monday Night
N 6kt⇓
< 1ft
Tuesday
⇑SW 9kt
< 1ft
Tuesday Night
WSW 11kt
1ft
Wednesday
S 11kt
1ft

Associated Zone Forecast which includes this point

Last Update: 11:26 am PDT Aug 29, 2026
Forecast Valid: 12pm PDT Aug 29, 2026-6pm PDT Sep 4, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

Variable winds less than 5 kt becoming SW around 6 kt. A chance of showers and thunderstorms. Waves 1 ft or less.

Tonight

SW wind 5 to 8 kt becoming S after midnight. Increasing clouds. Waves 1 ft or less.

Sunday

Variable winds 5 kt or less. Cloudy. Waves 1 ft or less.

Sunday Night

Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.

Monday

Variable winds 5 kt or less. Mostly sunny. Waves 1 ft or less.

Monday Night

N wind around 6 kt becoming variable and less than 5 kt in the evening. Mostly cloudy. Waves 1 ft or less.

Tuesday

Variable winds less than 5 kt becoming SW 5 to 9 kt in the afternoon. A slight chance of rain after 11am. Waves 1 ft or less.

Tuesday Night

WSW wind 9 to 11 kt becoming S after midnight. A chance of rain. Waves around 1 ft.

Wednesday

S wind 7 to 11 kt, with gusts as high as 21 kt. Rain. Waves around 1 ft.

Winds and waves higher in and near tstms.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.