San Rafael Bay - East Marin Island Weather Forecast

    • 57
    • 74

    Mostly Sunny

    • 55
    • 65

    Mostly Sunny

    • 55
    • 61

    Mostly Cloudy

    • 53
    • 64

    Chance Rain Showers

    • 54
    • 68

    Partly Sunny

    • 51
    • 65

    Partly Sunny

Today 17 Oct North Bay Interior Valleys

Sunny. Highs in the upper 70s to lower 90s. North Winds up to 5 Mph. Becoming southwest in the afternoon.

Tonight 17 Oct North Bay Interior Valleys

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

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San Rafael Bay - East Marin Island Temperature Statistics

October Temperature

Novato / Gnoss Field (13 miles)

  • Lowest 13 October, 2026

    42.8 °F

  • Average October

    63.8 °F

  • Highest 3 October, 2026

    100.4 °F

Climate (2021–2026)

Novato / Gnoss Field (13 miles)

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  • Average Low 2021–2026

    47 °F

  • Average 2021–2026

    57.9 °F

  • Average High 2021–2026

    72.5 °F
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