Sonoma Weather Forecast

    • 40
    • 51

    Dense Fog

    • 41
    • 55

    Partly Sunny

    • 40
    • 58

    Mostly Sunny

    • 41
    • 61

    Areas Fog

    • 43
    • 60

    Mostly Cloudy

    • 47
    • 60

    Chance Rain

Today 10 Dec North Bay Interior Valleys

Partly cloudy in the morning then becoming sunny. Patchy dense fog in the morning. Highs in the upper 40s to lower 60s. East Winds 5 to 10 Mph. Becoming south in the afternoon.

Tonight 10 Dec North Bay Interior Valleys

Mostly clear except patchy fog in the evening. Areas of fog after midnight. Lows in the 40s to lower 50s. North Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Sonoma Temperature Statistics

December Temperature

Petaluma Municipal Airport (8.1 miles)

  • Lowest 4 December, 2025

    33.8 °F

  • Average December

    44.4 °F

  • Highest 3 December, 2025

    66.2 °F

Climate (2020–Present)

Petaluma Municipal Airport (8.1 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    44.6 °F

  • Average 2020–2025

    55.1 °F

  • Average High 2020–2025

    68.7 °F
Get WillyWeather+ to remove ads