San Rafael Bay - East Marin Island Weather Forecast

    • 52
    • 65

    Sunny

    • 52
    • 66

    Mostly Sunny

    • 54
    • 67

    Mostly Cloudy

    • 54
    • 62

    Rain Likely

    • 54
    • 60

    Rain Likely

    • 53
    • 58

    Rain Showers Likely

    • 52
    • 61

    Slight Chance Rain

Today 16 Apr North Bay Interior Valleys

Sunny. Highs in the mid 60s to lower 70s. North Winds 10 to 20 Mph.

Tonight 16 Apr North Bay Interior Valleys

Clear. Lows in the 40s to lower 50s. North Winds 10 to 20 Mph with Gusts to around 35 Mph.

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San Rafael Bay - East Marin Island Temperature Statistics

April Temperature

Novato / Gnoss Field (13 miles)

  • Lowest 3 April, 2026

    42.8 °F

  • Average April

    58.5 °F

  • Highest 5 April, 2026

    86 °F

Climate (2021–Present)

Novato / Gnoss Field (13 miles)

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  • Average Low 2021–2026

    46.7 °F

  • Average 2021–2026

    57.7 °F

  • Average High 2021–2026

    72.6 °F
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