Mount Tamalpais State Park Weather Forecast

    • 56
    • 65

    Increasing Clouds

    • 58
    • 60

    Chance Rain Showers

    • 58
    • 60

    Slight Chance Rain Showers

    • 57
    • 61

    Partly Sunny

    • 58
    • 63

    Mostly Sunny

    • 58
    • 63

    Slight Chance Rain Showers

Today 17 Sep Coastal North Bay Including Point Reyes National Seashore

Partly cloudy in the morning then becoming sunny. Highs in the upper 60s to lower 80s. West Winds 5 to 10 Mph.

Tonight 17 Sep Coastal North Bay Including Point Reyes National Seashore

Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid 50s. Northwest Winds 5 to 10 Mph.

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  • Temperature Real-Time

Mount Tamalpais State Park Temperature Statistics

September Temperature

Novato / Gnoss Field (17.4 miles)

  • Lowest 1 September, 2025

    51.8 °F

  • Average September

    66 °F

  • Highest 1 September, 2025

    89.6 °F

Climate (2020–Present)

Novato / Gnoss Field (17.4 miles)

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  • Average Low 2020–2025

    46 °F

  • Average 2020–2025

    57.5 °F

  • Average High 2020–2025

    72.6 °F
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