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Duwamish Waterway, WA - Eighth Ave. South Marine Weather Forecast

Today - 45°F
Dec 26, 2025
8 to 14 mph SSW
Light Rain
Rain. Mostly cloudy. High near 45, with temperatures falling to around 42 in the afternoon. South southwest wind 8 to 14 mph. Chance of precipitation is 90%. New rainfall amounts less than a tenth of an inch possible.
Tonight - 37°F
Dec 26, 2025
5 to 12 mph WNW
Light Rain Likely
Rain likely before 2am. Mostly cloudy. Low around 37, with temperatures rising to around 39 overnight. West northwest wind 5 to 12 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Saturday - 42°F
Dec 27, 2025
2 to 6 mph NNW
Mostly Sunny
Mostly sunny. High near 42, with temperatures falling to around 40 in the afternoon. North northwest wind 2 to 6 mph.
Saturday Night - 36°F
Dec 27, 2025
2 mph ESE
Mostly Cloudy
Mostly cloudy, with a low around 36. East southeast wind around 2 mph.
Sunday - 44°F
Dec 28, 2025
3 mph ESE
Partly Sunny
Partly sunny, with a high near 44. East southeast wind around 3 mph.
Sunday Night - 36°F
Dec 28, 2025
3 mph NE
Mostly Cloudy
Mostly cloudy, with a low around 36.
Monday - 45°F
Dec 29, 2025
5 mph NNE
Mostly Cloudy
Mostly cloudy, with a high near 45.
Monday Night - 37°F
Dec 29, 2025
5 mph NNE
Mostly Cloudy
Mostly cloudy, with a low around 37.
Tuesday - 46°F
Dec 30, 2025
3 mph NE
Mostly Cloudy
Mostly cloudy, with a high near 46.
Tuesday Night - 40°F
Dec 30, 2025
2 mph SE
Chance Light Rain
A chance of rain after 10pm. Mostly cloudy, with a low around 40.
Wednesday - 47°F
Dec 31, 2025
5 mph SSE
Chance Light Rain
A chance of rain. Cloudy, with a high near 47.
Wednesday Night - 42°F
Dec 31, 2025
5 mph S
Light Rain Likely
Rain likely. Mostly cloudy, with a low around 42.
New Year's Day - 47°F
Jan 01, 2026
6 mph S
Light Rain Likely
Rain likely. Mostly cloudy, with a high near 47.
Thursday Night - 41°F
Jan 01, 2026
5 mph S
Chance Light Rain
A chance of rain. Mostly cloudy, with a low around 41.

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