San Pablo Bay - Rat Rock Weather Forecast

    • 60
    • 77

    Becoming Sunny

    • 59
    • 71

    Mostly Sunny

    • 57
    • 69

    Breezy

    • 57
    • 72

    Mostly Sunny

    • 56
    • 75

    Mostly Sunny

    • 57
    • 69

    Partly Sunny

Today 10 Sep North Bay Interior Valleys

Sunny. Highs in the lower 80s to mid 90s. Southwest Winds 5 to 10 Mph increasing to 10 to 20 Mph in the afternoon.

Tonight 10 Sep North Bay Interior Valleys

Mostly clear. Lows in the 50s to lower 60s. Southwest Winds 10 to 20 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

    65.7 °F

  • Highest 8 September, 2026

    96.8 °F

Climate (2021–2026)

Novato / Gnoss Field (10.6 miles)

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  • Average Low 2021–2026

    46.9 °F

  • Average 2021–2026

    57.8 °F

  • Average High 2021–2026

    72.4 °F
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