San Pablo Bay Weather Forecast

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    Chance Rain Showers

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    • 63

    Chance Rain Showers

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    • 66

    Mostly Sunny

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    • 68

    Sunny

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    Mostly Sunny

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    Chance Rain Showers

Today 18 Sep East Bay Interior Valleys

Mostly cloudy. A slight chance of Showers and isolated Thunderstorms in the afternoon. Highs in the upper 80s. Southwest Winds 5 to 15 Mph.

Tonight 18 Sep East Bay Interior Valleys

Mostly cloudy. A chance of Showers and isolated Thunderstorms. Lows in the mid 60s. West Winds 5 to 10 Mph.

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San Pablo Bay Temperature Statistics

September Temperature

Novato / Gnoss Field (10.6 miles)

  • Lowest 1 September, 2025

    51.8 °F

  • Average September

    66.1 °F

  • Highest 15 September, 2025

    96.8 °F

Climate (2020–Present)

Novato / Gnoss Field (10.6 miles)

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  • Average Low 2020–2025

    46 °F

  • Average 2020–2025

    57.5 °F

  • Average High 2020–2025

    72.6 °F
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