Petaluma River - Black Point Weather Forecast

    • 63
    • 91

    Increasing Clouds

    • 65
    • 95

    Mostly Cloudy

    • 60
    • 89

    Mostly Sunny

    • 57
    • 79

    Mostly Sunny

    • 56
    • 78

    Mostly Sunny

    • 56
    • 79

    Mostly Sunny

Today 8 Sep North Bay Interior Valleys

Sunny. Highs in the 80s to 90s. East Winds up to 5 Mph. Becoming south in the afternoon.

Tonight 8 Sep North Bay Interior Valleys

Partly cloudy in the evening then becoming mostly cloudy. Lows in the upper 50s to mid 60s. West Winds 5 to 10 Mph. Becoming northwest after midnight.

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Petaluma River - Black Point Temperature Statistics

September Temperature

Novato / Gnoss Field (3.1 miles)

  • Lowest 4 September, 2026

    51.8 °F

  • Average September

    64.3 °F

  • Highest 5 September, 2026

    80.6 °F

Climate (2021–2026)

Novato / Gnoss Field (3.1 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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