Hamilton Weather Forecast

    • 53
    • 81

    Sunny

    • 50
    • 71

    Partly Sunny

    • 52
    • 76

    Mostly Sunny

    • 55
    • 76

    Mostly Sunny

    • 55
    • 77

    Mostly Sunny

    • 56
    • 76

    Partly Sunny

Today 29 Oct North Bay Interior Valleys

Sunny. Highs in the lower 70s to mid 80s. West Winds 5 to 10 Mph.

Tonight 29 Oct North Bay Interior Valleys

Mostly clear. Lows in the upper 40s to mid 50s. West Winds 5 to 10 Mph.

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Hamilton Temperature Statistics

October Temperature

Novato / Gnoss Field (5.6 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 (5.6 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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