Petaluma River - Petaluma Weather Forecast

    • 44
    • 61

    Rain Likely

    • 52
    • 58

    Chance Rain

    • 53
    • 57

    Rain

    • 53
    • 57

    Rain Likely

    • 52
    • 56

    Rain

    • 49
    • 56

    Rain Likely

Today 17 Dec North Bay Interior Valleys

Becoming partly cloudy in the afternoon. Patchy fog in the morning. Rain likely in the Morning, then a slight chance of rain in the afternoon. Highs in the mid 50s to lower 60s. West Winds 5 to 10 Mph.

Tonight 17 Dec North Bay Interior Valleys

Mostly cloudy. Patchy fog in the Evening, then widespread fog after midnight. Lows in the 40s. Northwest Winds up to 5 Mph.

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Petaluma River - Petaluma Temperature Statistics

December Temperature

Petaluma Municipal Airport (1.9 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 (1.9 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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