Petaluma River - Lakeville Weather Forecast

    • 37
    • 54

    Increasing Clouds

    • 36
    • 54

    Mostly Sunny

    • 37
    • 54

    Mostly Sunny

    • 38
    • 55

    Mostly Sunny

    • 42
    • 54

    Chance Rain

    • 45
    • 52

    Rain Likely

Today 27 Dec North Bay Interior Valleys

Sunny. Highs in the upper 40s to mid 50s. North Winds 5 to 10 Mph.

Tonight 27 Dec North Bay Interior Valleys

Mostly clear in the evening then becoming partly cloudy. Lows in the mid 30s to lower 40s. Northwest Winds around 5 Mph.

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Petaluma River - Lakeville Temperature Statistics

December Temperature

Novato / Gnoss Field (3.7 miles)

  • Lowest 2 December, 2025

    37.4 °F

  • Average December

    49.8 °F

  • Highest 3 December, 2025

    71.6 °F

Climate (2020–Present)

Novato / Gnoss Field (3.7 miles)

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  • Average Low 2020–2025

    46.3 °F

  • Average 2020–2025

    57.4 °F

  • Average High 2020–2025

    72.3 °F
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