Tomales Bay - Marshall Weather Forecast

    • 44
    • 58

    Areas Fog

    • 44
    • 60

    Patchy Fog

    • 44
    • 61

    Mostly Sunny

    • 44
    • 62

    Areas Fog

    • 47
    • 59

    Mostly Cloudy

    • 50
    • 61

    Rain Likely

Today 10 Dec Coastal North Bay Including Point Reyes National Seashore

Sunny. Highs in the mid to upper 50s. North Winds around 5 Mph. Becoming northwest in the afternoon.

Tonight 10 Dec Coastal North Bay Including Point Reyes National Seashore

Clear except for dense fog. Lows in the mid 40s. Light Winds.

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Tomales Bay - Marshall Temperature Statistics

December Temperature

Petaluma Municipal Airport (16.8 miles)

  • Lowest 4 December, 2025

    33.8 °F

  • Average December

    44.2 °F

  • Highest 3 December, 2025

    66.2 °F

Climate (2020–Present)

Petaluma Municipal Airport (16.8 miles)

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  • Average Low 2020–2025

    44.6 °F

  • Average 2020–2025

    55.1 °F

  • Average High 2020–2025

    68.7 °F
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