Petaluma River - Black Point Weather Forecast

    • 58
    • 91

    Becoming Sunny

    • 57
    • 92

    Sunny

    • 59
    • 91

    Mostly Sunny

    • 60
    • 81

    Chance Rain Showers

    • 59
    • 81

    Slight Chance Rain Showers

    • 58
    • 81

    Mostly Sunny

Today 15 Sep North Bay Interior Valleys

Sunny. Patchy fog in the morning. Highs in the 80s to 90s. Southeast Winds 5 to 10 Mph. Becoming southwest in the afternoon.

Tonight 15 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 1 September, 2025

    51.8 °F

  • Average September

    66.1 °F

  • Highest 1 September, 2025

    89.6 °F

Climate (2020–Present)

Novato / Gnoss Field (3.1 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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