Two Rock Weather Forecast

    • 37
    • 53

    Increasing Clouds

    • 36
    • 54

    Mostly Sunny

    • 37
    • 56

    Mostly Sunny

    • 38
    • 56

    Mostly Sunny

    • 41
    • 55

    Mostly Cloudy

    • 43
    • 53

    Rain Showers Likely

Today 27 Dec North Bay Interior Valleys

Partly cloudy in the morning then becoming sunny. Highs in the upper 40s to mid 50s. Northwest Winds 5 to 10 Mph.

Tonight 27 Dec North Bay Interior Valleys

Mostly clear in the evening then becoming mostly cloudy. Patchy fog after midnight. Lows in the mid 30s to lower 40s. North Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Two Rock Temperature Statistics

December Temperature

Petaluma Municipal Airport (9.9 miles)

  • Lowest 4 December, 2025

    33.8 °F

  • Average December

    47 °F

  • Highest 3 December, 2025

    66.2 °F

Climate (2020–Present)

Petaluma Municipal Airport (9.9 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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