Lake Sonoma Weather Forecast

    • 54
    • 62

    Chance Rain

    • 55
    • 61

    Rain

    • 49
    • 60

    Chance Rain

    • 53
    • 57

    Rain

    • 49
    • 56

    Rain

    • 47
    • 57

    Rain Likely

    • 48
    • 54

    Rain Likely

Today 15 Dec Sonoma Coastal Range

Partly cloudy late in the morning then becoming mostly cloudy. A slight chance of rain in the afternoon. Highs around 60. West Winds 5 to 10 Mph.

Tonight 15 Dec Sonoma Coastal Range

Mostly cloudy. A chance of rain. Patchy fog after midnight. Lows in the mid 50s. West Winds around 5 Mph in the evening. Becoming light.

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Lake Sonoma Temperature Statistics

December Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (21.1 miles)

  • Lowest 4 December, 2025

    34 °F

  • Average December

    44.1 °F

  • Highest 3 December, 2025

    68 °F

Climate (2020–Present)

Santa Rosa, Santa Rosa Sonoma County Airport (21.1 miles)

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  • Average Low 2020–2025

    45.5 °F

  • Average 2020–2025

    57.9 °F

  • Average High 2020–2025

    72.5 °F
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