Muir Beach Weather Forecast

    • 56
    • 62

    Increasing Clouds

    • 56
    • 58

    Mostly Cloudy

    • 57
    • 59

    Mostly Cloudy

    • 57
    • 65

    Partly Sunny

    • 59
    • 73

    Partly Sunny

    • 60
    • 73

    Partly Sunny

Today 19 Sep Coastal North Bay Including Point Reyes National Seashore

Partly cloudy in the morning then becoming sunny. Patchy fog in the morning. Highs in the 60s to mid 70s. West Winds 5 to 15 Mph.

Tonight 19 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.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Muir Beach Temperature Statistics

September Temperature

Novato / Gnoss Field (19.3 miles)

  • Lowest 6 September, 2026

    48.2 °F

  • Average September

    66.8 °F

  • Highest 9 September, 2026

    100.4 °F

Climate (2021–2026)

Novato / Gnoss Field (19.3 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    47 °F

  • Average 2021–2026

    57.8 °F

  • Average High 2021–2026

    72.5 °F
Get WillyWeather+ to remove ads