Bel Marin Keys Weather Forecast

    • 46
    • 62

    Increasing Clouds

    • 45
    • 63

    Partly Sunny

    • 44
    • 65

    Partly Sunny

    • 45
    • 64

    Partly Sunny

    • 48
    • 65

    Partly Sunny

    • 46
    • 65

    Partly Sunny

    • 46
    • 62

    Partly Sunny

Today 23 Nov North Bay Interior Valleys

Partly cloudy late in the morning then becoming sunny. Patchy fog late in the morning. Highs in the 50s to mid 60s. South Winds 5 to 10 Mph.

Tonight 23 Nov North Bay Interior Valleys

Partly cloudy. Patchy fog. Lows in the 40s. Northwest Winds 5 to 10 Mph.

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  • Temperature Real-Time

Bel Marin Keys Temperature Statistics

November Temperature

Novato / Gnoss Field (4.3 miles)

  • Lowest 1 November, 2025

    42.8 °F

  • Average November

    57.8 °F

  • Highest 10 November, 2025

    82.4 °F

Climate (2020–Present)

Novato / Gnoss Field (4.3 miles)

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  • Average Low 2020–2025

    46.1 °F

  • Average 2020–2025

    57.4 °F

  • Average High 2020–2025

    72.4 °F
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