Hamilton Weather Forecast

    • 53
    • 73

    Mostly Sunny

    • 50
    • 74

    Mostly Sunny

    • 52
    • 80

    Mostly Sunny

    • 52
    • 81

    Sunny

    • 51
    • 76

    Mostly Sunny

    • 54
    • 81

    Mostly Sunny

    • 54
    • 88

    Mostly Sunny

Today 12 May North Bay Interior Valleys

Partly cloudy. Highs in the upper 60s to lower 80s. Southwest Winds 10 to 20 Mph.

Tonight 12 May North Bay Interior Valleys

Partly cloudy in the evening then becoming mostly clear. Lows in the 40s to upper 50s. West Winds 10 to 20 Mph.

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Hamilton Temperature Statistics

May Temperature

Novato / Gnoss Field (5.6 miles)

  • Lowest 4 May, 2026

    46.4 °F

  • Average May

    59.4 °F

  • Highest 9 May, 2026

    78.8 °F

Climate (2021–Present)

Novato / Gnoss Field (5.6 miles)

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  • Average Low 2021–2026

    46.7 °F

  • Average 2021–2026

    57.7 °F

  • Average High 2021–2026

    72.5 °F
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