San Rafael Bay - East Marin Island Weather Forecast

    • 58
    • 66

    Increasing Clouds

    • 58
    • 64

    Chance Drizzle

    • 56
    • 63

    Chance Drizzle

    • 55
    • 65

    Mostly Sunny

    • 55
    • 70

    Mostly Sunny

    • 56
    • 71

    Mostly Sunny

    • 59
    • 75

    Mostly Sunny

Today 1 Sep North Bay Interior Valleys

Mostly cloudy late in the morning then becoming partly cloudy. Highs in the lower 60s to mid 70s. Southwest Winds 10 to 20 Mph.

Tonight 1 Sep North Bay Interior Valleys

Partly cloudy in the evening then becoming mostly cloudy. Patchy fog. A chance of drizzle after midnight. Lows in the 40s to upper 50s. Southwest Winds 10 to 20 Mph. Becoming south up to 5 Mph after midnight.

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San Rafael Bay - East Marin Island Temperature Statistics

September Temperature

Novato / Gnoss Field (13 miles)

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Climate (2021–2026)

Novato / Gnoss Field (13 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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