Muir Beach Weather Forecast

    • 53
    • 57

    Mostly Cloudy

    • 53
    • 56

    Mostly Cloudy

    • 55
    • 60

    Mostly Sunny

    • 57
    • 71

    Mostly Sunny

    • 56
    • 69

    Mostly Sunny

    • 55
    • 67

    Partly Sunny

Today 26 Sep Coastal North Bay Including Point Reyes National Seashore

Mostly cloudy. Patchy fog in the morning. Highs in the 60s. North Winds around 5 Mph. Becoming west in the afternoon.

Tonight 26 Sep Coastal North Bay Including Point Reyes National Seashore

Mostly cloudy. Lows in the lower 50s. West Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

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Muir Beach Temperature Statistics

September Temperature

Novato / Gnoss Field (19.3 miles)

  • Lowest 6 September, 2026

    48.2 °F

  • Average September

    65.7 °F

  • Highest 9 September, 2026

    100.4 °F

Climate (2021–2026)

Novato / Gnoss Field (19.3 miles)

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  • Average Low 2021–2026

    47 °F

  • Average 2021–2026

    57.8 °F

  • Average High 2021–2026

    72.4 °F
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