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Cosmopolis, WA Marine Weather Forecast

Station WPTW1 - 9441102 - Westport, WA

December 27, 2025 3:36 pm PST
Location: 46.904N 124.105W
Atmospheric Pressure: 30.37 in (1028.3 mb)


This Afternoon - 45°F
Dec 27, 2025
8 to 12 mph NW
Slight Chance Light Rain
A slight chance of rain after 5pm. Mostly cloudy, with a high near 45. Northwest wind 8 to 12 mph. Chance of precipitation is 20%.
Tonight - 38°F
Dec 27, 2025
3 to 7 mph ESE
Slight Chance Light Rain then Mostly Cloudy
A slight chance of rain before 10pm. Mostly cloudy. Low around 38, with temperatures rising to around 40 overnight. East southeast wind 3 to 7 mph. Chance of precipitation is 20%.
Sunday - 44°F
Dec 28, 2025
8 mph ESE
Partly Sunny
Partly sunny, with a high near 44. East southeast wind around 8 mph.
Sunday Night - 40°F
Dec 28, 2025
8 mph E
Mostly Cloudy
Mostly cloudy, with a low around 40. East wind around 8 mph.
Monday - 47°F
Dec 29, 2025
9 mph ENE
Partly Sunny
Partly sunny, with a high near 47. East northeast wind around 9 mph.
Monday Night - 39°F
Dec 29, 2025
8 mph ENE
Mostly Cloudy
Mostly cloudy, with a low around 39.
Tuesday - 48°F
Dec 30, 2025
9 mph E
Partly Sunny
Partly sunny, with a high near 48.
Tuesday Night - 41°F
Dec 30, 2025
7 mph E
Mostly Cloudy
Mostly cloudy, with a low around 41.
Wednesday - 49°F
Dec 31, 2025
7 mph SE
Chance Light Rain
A chance of rain after 10am. Partly sunny, with a high near 49.
Wednesday Night - 43°F
Dec 31, 2025
9 mph SE
Chance Light Rain
A chance of rain. Mostly cloudy, with a low around 43.
New Year's Day - 49°F
Jan 01, 2026
9 to 13 mph SSE
Light Rain
Rain. Mostly cloudy, with a high near 49.
Thursday Night - 44°F
Jan 01, 2026
12 mph S
Light Rain
Rain. Cloudy, with a low around 44.
Friday - 48°F
Jan 02, 2026
12 mph WSW
Light Rain
Rain. Mostly cloudy, with a high near 48.
Friday Night - 42°F
Jan 02, 2026
12 mph WSW
Light Rain Likely
Rain likely. Mostly cloudy, with a low around 42.

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