Petaluma River - Black John Slough Entrance Weather Forecast

    • 49
    • 62

    Rain Likely

    • 41
    • 60

    Chance Rain

    • 45
    • 62

    Mostly Cloudy

    • 47
    • 59

    Rain Likely

    • 45
    • 61

    Chance Rain

    • 46
    • 59

    Rain Likely

Today 27 Mar North Bay Interior Valleys

Rain in the Morning, then rain likely in the afternoon. Highs in the 50s to mid 60s. Southwest Winds 10 to 20 Mph.

Tonight 27 Mar North Bay Interior Valleys

Rain in the Evening, then rain likely after midnight. Lows in the mid 40s to lower 50s. Southwest Winds 10 to 20 Mph.

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  • Temperature Real-Time

Petaluma River - Black John Slough Entrance Temperature Statistics

March Temperature

Novato / Gnoss Field (1.9 miles)

  • Lowest 9 March, 2025

    35.6 °F

  • Average March

    52.6 °F

  • Highest 24 March, 2025

    80.6 °F

Climate (2020–Present)

Novato / Gnoss Field (1.9 miles)

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  • Average Low 2020–2025

    45.9 °F

  • Average 2020–2025

    57.6 °F

  • Average High 2020–2025

    72.7 °F
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