Petaluma River - Black John Slough Entrance Weather Forecast

    • 49
    • 73

    Becoming Sunny

    • 48
    • 76

    Partly Sunny

    • 48
    • 75

    Partly Sunny

    • 48
    • 70

    Mostly Sunny

    • 47
    • 73

    Mostly Sunny

    • 46
    • 72

    Mostly Sunny

Today 16 Apr North Bay Interior Valleys

Partly cloudy. Patchy fog in the morning. Highs in the 60s to mid 70s. Southwest Winds 5 to 10 Mph.

Tonight 16 Apr North Bay Interior Valleys

Mostly clear except patchy fog after midnight. Lows in the 40s to mid 50s. West Winds 5 to 10 Mph. Becoming northwest after midnight.

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Petaluma River - Black John Slough Entrance Temperature Statistics

April Temperature

Novato / Gnoss Field (1.9 miles)

  • Lowest 6 April, 2024

    37.4 °F
  • Average April

    54.5 °F
  • Highest 11 April, 2024

    80.6 °F

Climate (2019–Present)

Novato / Gnoss Field (1.9 miles)

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  • Average Low 2019–2024

    45.9 °F
  • Average 2019–2024

    57.6 °F
  • Average High 2019–2024

    72.6 °F
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