Muir Beach Weather Forecast

    • 56
    • 63

    Partly Sunny

    • 55
    • 63

    Partly Sunny

    • 55
    • 60

    Mostly Cloudy

    • 55
    • 59

    Mostly Cloudy

    • 55
    • 59

    Mostly Cloudy

    • 55
    • 58

    Mostly Cloudy

Today 20 Aug Coastal North Bay Including Point Reyes National Seashore

Sunny. Highs in the mid 60s to lower 80s. Northwest Winds 5 to 15 Mph.

Tonight 20 Aug Coastal North Bay Including Point Reyes National Seashore

Mostly clear in the evening then becoming partly cloudy. Lows in the mid 50s. Northwest Winds 10 to 20 Mph becoming 5 to 10 Mph after midnight.

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Muir Beach Temperature Statistics

August Temperature

Novato / Gnoss Field (19.3 miles)

  • Lowest 2 August, 2025

    48.2 °F

  • Average August

    65.2 °F

  • Highest 8 August, 2025

    96.8 °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

    72.5 °F
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