Mount Tamalpais State Park Weather Forecast

    • 52
    • 57

    Rain

    • 50
    • 57

    Rain

    • 51
    • 55

    Rain

    • 49
    • 54

    Rain

    • 45
    • 51

    Rain

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    • 50

    Chance Rain

Today 22 Dec Coastal North Bay Including Point Reyes National Seashore

A chance of rain in the Morning, then rain in the afternoon. Highs in the mid 50s. Northwest Winds 5 to 10 Mph.

Tonight 22 Dec Coastal North Bay Including Point Reyes National Seashore

Areas of fog. Rain. Lows in the lower 50s. West Winds 5 to 10 Mph.

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Mount Tamalpais State Park Temperature Statistics

December Temperature

Novato / Gnoss Field (17.4 miles)

  • Lowest 2 December, 2025

    37.4 °F

  • Average December

    47.7 °F

  • Highest 3 December, 2025

    71.6 °F

Climate (2020–Present)

Novato / Gnoss Field (17.4 miles)

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  • Average Low 2020–2025

    46.2 °F

  • Average 2020–2025

    57.4 °F

  • Average High 2020–2025

    72.3 °F
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