Nicasio Weather Forecast

    • 51
    • 80

    Mostly Sunny

    • 49
    • 66

    Partly Sunny

    • 50
    • 72

    Mostly Sunny

    • 53
    • 73

    Mostly Sunny

    • 53
    • 74

    Partly Sunny

    • 54
    • 73

    Mostly Cloudy

Today 29 Oct Marin Coastal Range

Sunny. Highs in the upper 70s. Light Winds. Becoming northwest around 5 Mph in the afternoon.

Tonight 29 Oct Marin Coastal Range

Mostly clear. Lows in the lower 50s. Northwest Winds 5 to 10 Mph.

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Nicasio Temperature Statistics

October Temperature

Novato / Gnoss Field (9.3 miles)

  • Lowest 17 October, 2025

    42.8 °F

  • Average October

    59.9 °F

  • Highest 21 October, 2025

    84.2 °F

Climate (2020–Present)

Novato / Gnoss Field (9.3 miles)

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  • Average Low 2020–2025

    45.9 °F

  • Average 2020–2025

    57.3 °F

  • Average High 2020–2025

    72.3 °F
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