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Petaluma River Entrance, CA Marine Weather Forecast

Overnight - 45°F
Dec 31, 2025
6 mph ENE
Chance Light Rain
A chance of rain. Cloudy. Low around 45, with temperatures rising to around 47 overnight. East northeast wind around 6 mph. Chance of precipitation is 30%.
Wednesday - 51°F
Dec 31, 2025
7 mph ENE
Rain
Rain. Cloudy, with a high near 51. East northeast wind around 7 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night - 48°F
Dec 31, 2025
7 to 12 mph ENE
Rain
Rain. Cloudy. Low around 48, with temperatures rising to around 50 overnight. East northeast wind 7 to 12 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
New Year's Day - 57°F
Jan 01, 2026
7 to 10 mph SE
Light Rain
Rain. Cloudy, with a high near 57. Southeast wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night - 54°F
Jan 01, 2026
7 to 12 mph SSE
Light Rain
Rain. Cloudy, with a low around 54. South southeast wind 7 to 12 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
Friday - 57°F
Jan 02, 2026
10 to 16 mph SSE
Rain
Rain. Cloudy, with a high near 57. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night - 52°F
Jan 02, 2026
16 mph S
Showers And Thunderstorms
Rain before 7pm, then showers and thunderstorms between 7pm and 4am, then rain. Cloudy, with a low around 52.
Saturday - 56°F
Jan 03, 2026
9 to 14 mph SSW
Rain
Rain. Cloudy, with a high near 56.
Saturday Night - 50°F
Jan 03, 2026
9 mph S
Rain
Rain. Cloudy, with a low around 50.
Sunday - 55°F
Jan 04, 2026
7 to 10 mph S
Rain Likely
Rain likely. Mostly cloudy, with a high near 55.
Sunday Night - 48°F
Jan 04, 2026
7 mph S
Light Rain Likely
Rain likely. Mostly cloudy, with a low around 48.
Monday - 54°F
Jan 05, 2026
9 mph SSE
Light Rain Likely
Rain likely. Mostly cloudy, with a high near 54.
Monday Night - 46°F
Jan 05, 2026
7 mph SE
Light Rain Likely
Rain likely. Mostly cloudy, with a low around 46.
Tuesday - 55°F
Jan 06, 2026
7 mph E
Chance Light Rain
A chance of rain. Partly sunny, with a high near 55.

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