Petaluma River - Black Point Weather Forecast

    • 53
    • 78

    Becoming Sunny

    • 56
    • 88

    Partly Sunny

    • 58
    • 84

    Partly Sunny

    • 53
    • 79

    Mostly Sunny

    • 52
    • 75

    Partly Sunny

    • 53
    • 73

    Mostly Sunny

Today 22 Sep North Bay Interior Valleys

Mostly cloudy in the morning then becoming sunny. Areas of fog in the morning. Highs in the lower 70s to mid 80s. Southwest Winds 5 to 10 Mph.

Tonight 22 Sep North Bay Interior Valleys

Mostly clear. Areas of fog after midnight. Lows in the 40s to upper 50s. 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

    66 °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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