Hamilton Weather Forecast

    • 56
    • 79

    Increasing Clouds

    • 58
    • 76

    Decreasing Clouds

    • 58
    • 72

    Mostly Cloudy

    • 57
    • 74

    Mostly Cloudy

    • 56
    • 75

    Partly Sunny

    • 56
    • 76

    Mostly Cloudy

    • 57
    • 78

    Mostly Cloudy

Today 11 Aug North Bay Interior Valleys

Sunny. Highs in the lower 70s to mid 80s. South Winds 5 to 15 Mph.

Tonight 11 Aug North Bay Interior Valleys

Mostly clear in the evening then becoming mostly cloudy. Patchy fog in the evening. Areas of fog after midnight. Lows in the 40s to upper 50s. Southwest Winds 5 to 15 Mph.

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Hamilton Temperature Statistics

August Temperature

Novato / Gnoss Field (5.6 miles)

  • Lowest 1 August, 2026

    53.6 °F

  • Average August

    67 °F

  • Highest 2 August, 2026

    98.6 °F

Climate (2021–2026)

Novato / Gnoss Field (5.6 miles)

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  • Average Low 2021–2026

    46.9 °F

  • Average 2021–2026

    57.8 °F

  • Average High 2021–2026

    72.5 °F
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