San Pablo Bay - Rat Rock Weather Forecast

    • 61
    • 74

    Decreasing Clouds

    • 55
    • 71

    Mostly Sunny

    • 56
    • 68

    Mostly Sunny

    • 53
    • 65

    Mostly Sunny

    • 56
    • 74

    Sunny

    • 57
    • 80

    Sunny

    • 57
    • 80

    Mostly Sunny

Today 24 Sep North Bay Interior Valleys

Mostly cloudy. Highs in the mid 70s to lower 90s. Southwest Winds 10 to 15 Mph.

Tonight 24 Sep North Bay Interior Valleys

Mostly cloudy in the evening then becoming partly cloudy. Lows in the mid 50s to lower 60s. West Winds 10 to 15 Mph.

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San Pablo Bay - Rat Rock Temperature Statistics

September Temperature

Novato / Gnoss Field (10.6 miles)

  • Lowest 6 September, 2026

    48.2 °F

  • Average September

    65.6 °F

  • Highest 9 September, 2026

    100.4 °F

Climate (2021–2026)

Novato / Gnoss Field (10.6 miles)

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  • Average Low 2021–2026

    47 °F

  • Average 2021–2026

    57.8 °F

  • Average High 2021–2026

    72.4 °F
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