San Anselmo Weather Forecast

    • 57
    • 88

    Increasing Clouds

    • 56
    • 85

    Partly Sunny

    • 56
    • 79

    Partly Sunny

    • 56
    • 81

    Partly Sunny

    • 57
    • 84

    Mostly Sunny

    • 57
    • 86

    Partly Sunny

Today 22 Aug North Bay Interior Valleys

Partly cloudy in the morning then becoming sunny. Highs in the mid 70s to lower 90s. West Winds 5 to 15 Mph.

Tonight 22 Aug North Bay Interior Valleys

Partly cloudy. Patchy fog. Lows in the 50s. Southwest Winds 5 to 10 Mph.

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San Anselmo Temperature Statistics

August Temperature

Novato / Gnoss Field (11.2 miles)

  • Lowest 10 August, 2026

    51.8 °F

  • Average August

    65.7 °F

  • Highest 2 August, 2026

    98.6 °F

Climate (2021–2026)

Novato / Gnoss Field (11.2 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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