Petaluma River - Black John Slough Entrance Weather Forecast

    • 50
    • 63

    Increasing Clouds

    • 47
    • 66

    Partly Sunny

    • 50
    • 65

    Mostly Cloudy

    • 46
    • 67

    Mostly Sunny

    • 48
    • 68

    Mostly Sunny

    • 48
    • 68

    Mostly Sunny

Today 23 Apr North Bay Interior Valleys

Mostly cloudy in the morning then becoming partly cloudy. Highs in the 50s to upper 60s. South Winds 10 to 20 Mph.

Tonight 23 Apr North Bay Interior Valleys

Partly cloudy in the evening then becoming mostly cloudy. Lows in the 40s to mid 50s. Southwest Winds 10 to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

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

    55.8 °F

  • Highest 21 April, 2024

    82.4 °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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