Tomales Bay - Marshall Weather Forecast

    • 49
    • 58

    Chance Drizzle

    • 47
    • 60

    Mostly Sunny

    • 48
    • 65

    Partly Sunny

    • 49
    • 63

    Areas Fog

    • 48
    • 63

    Partly Sunny

    • 47
    • 65

    Mostly Sunny

Today 25 May Coastal North Bay Including Point Reyes National Seashore

Mostly cloudy. A slight chance of drizzle late in the morning. A chance of drizzle in the afternoon. Highs in the upper 50s. West Winds 5 to 10 Mph.

Tonight 25 May Coastal North Bay Including Point Reyes National Seashore

Mostly cloudy. A chance of drizzle in the evening. Lows around 50. West Winds 5 to 10 Mph. Becoming northwest 10 to 20 Mph after midnight.

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Tomales Bay - Marshall Temperature Statistics

May Temperature

Petaluma Municipal Airport (16.8 miles)

  • Lowest 4 May, 2026

    42.8 °F

  • Average May

    58.8 °F

  • Highest 19 May, 2026

    87.8 °F

Climate (2021–Present)

Petaluma Municipal Airport (16.8 miles)

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  • Average Low 2021–2026

    44.8 °F

  • Average 2021–2026

    55.2 °F

  • Average High 2021–2026

    68.6 °F
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