Sonoma Valley Regional Park Weather Forecast

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    • 56

    Chance Rain

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    • 55

    Rain

    • 51
    • 53

    Rain

    • 51
    • 56

    Rain

    • 47
    • 55

    Rain

    • 44
    • 52

    Rain

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    Rain

Today 18 Dec North Bay Interior Valleys

Mostly cloudy. Patchy fog. A chance of rain. Highs in the 50s to lower 60s. South Winds around 5 Mph.

Tonight 18 Dec North Bay Interior Valleys

Cloudy. Areas of fog. A chance of rain. Lows in the mid 40s to lower 50s. South Winds 5 to 10 Mph.

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Sonoma Valley Regional Park Temperature Statistics

December Temperature

Petaluma Municipal Airport (8.1 miles)

  • Lowest 4 December, 2025

    33.8 °F

  • Average December

    43 °F

  • Highest 3 December, 2025

    66.2 °F

Climate (2020–Present)

Petaluma Municipal Airport (8.1 miles)

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  • Average Low 2020–2025

    44.6 °F

  • Average 2020–2025

    55.1 °F

  • Average High 2020–2025

    68.6 °F
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