Robert Louis Stevenson State Park Weather Forecast

    • 49
    • 55

    Mostly Sunny

    • 45
    • 55

    Decreasing Clouds

    • 46
    • 55

    Mostly Sunny

    • 49
    • 57

    Partly Sunny

    • 50
    • 59

    Mostly Sunny

    • 49
    • 60

    Mostly Sunny

    • 47
    • 59

    Mostly Sunny

Today 6 Dec North Bay Interior Mountains

Sunny. Highs in the mid 50s to lower 60s. Northwest Winds around 5 Mph.

Tonight 6 Dec North Bay Interior Mountains

Mostly clear in the evening then becoming partly cloudy. Lows in the mid to upper 40s. North Winds 5 to 10 Mph.

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Robert Louis Stevenson State Park Temperature Statistics

December Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (14.9 miles)

  • Lowest 4 December, 2025

    34 °F

  • Average December

    46.9 °F

  • Highest 3 December, 2025

    68 °F

Climate (2020–Present)

Santa Rosa, Santa Rosa Sonoma County Airport (14.9 miles)

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  • Average Low 2020–2025

    45.5 °F

  • Average 2020–2025

    57.9 °F

  • Average High 2020–2025

    72.6 °F
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