Forest Knolls Weather Forecast

    • 53
    • 72

    Mostly Sunny

    • 52
    • 73

    Mostly Sunny

    • 52
    • 80

    Mostly Sunny

    • 53
    • 78

    Partly Sunny

    • 53
    • 73

    Partly Sunny

    • 53
    • 74

    Partly Sunny

Today 12 Sep Marin Coastal Range

Partly cloudy in the morning then becoming sunny. Highs in the lower 70s. West Winds 10 to 20 Mph.

Tonight 12 Sep Marin Coastal Range

Mostly clear. Lows in the mid 50s. Northwest Winds 15 to 20 Mph with Gusts to around 35 Mph.

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Forest Knolls Temperature Statistics

September Temperature

Novato / Gnoss Field (11.2 miles)

  • Lowest 6 September, 2026

    48.2 °F

  • Average September

    68.1 °F

  • Highest 9 September, 2026

    100.4 °F

Climate (2021–2026)

Novato / Gnoss Field (11.2 miles)

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  • Average Low 2021–2026

    47 °F

  • Average 2021–2026

    57.8 °F

  • Average High 2021–2026

    72.5 °F
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