Muir Beach Weather Forecast

    • 58
    • 65

    Mostly Sunny

    • 57
    • 65

    Partly Sunny

    • 57
    • 65

    Partly Sunny

    • 59
    • 61

    Partly Sunny

    • 59
    • 62

    Partly Sunny

    • 58
    • 61

    Partly Sunny

Today 15 Sep Coastal North Bay Including Point Reyes National Seashore

Sunny. Highs in the 70s. South Winds around 5 Mph. Becoming west in the afternoon.

Tonight 15 Sep Coastal North Bay Including Point Reyes National Seashore

Mostly clear. Lows in the mid 50s. Light Winds.

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Muir Beach Temperature Statistics

September Temperature

Novato / Gnoss Field (19.3 miles)

  • Lowest 1 September, 2025

    51.8 °F

  • Average September

    66.3 °F

  • Highest 1 September, 2025

    89.6 °F

Climate (2020–Present)

Novato / Gnoss Field (19.3 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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