Petaluma River - Black Point Weather Forecast

    • 55
    • 89

    Sunny

    • 54
    • 89

    Mostly Sunny

    • 55
    • 86

    Mostly Sunny

    • 57
    • 88

    Partly Sunny

    • 58
    • 89

    Mostly Sunny

    • 57
    • 88

    Mostly Sunny

Today 29 Sep North Bay Interior Valleys

Sunny. Highs in the lower 80s to mid 90s. West Winds 5 to 15 Mph.

Tonight 29 Sep North Bay Interior Valleys

Clear. Lows in the lower 50s to mid 60s. West Winds 5 to 10 Mph.

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Petaluma River - Black Point Temperature Statistics

September Temperature

Novato / Gnoss Field (3.1 miles)

  • Lowest 6 September, 2026

    48.2 °F

  • Average September

    65.5 °F

  • Highest 9 September, 2026

    100.4 °F

Climate (2021–2026)

Novato / Gnoss Field (3.1 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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