Robert Louis Stevenson State Park Weather Forecast

    • 39
    • 44

    Mostly Sunny

    • 41
    • 49

    Sunny

    • 42
    • 51

    Sunny

    • 42
    • 52

    Mostly Sunny

    • 44
    • 53

    Chance Rain

    • 45
    • 49

    Rain Likely

    • 43
    • 48

    Chance Rain

Today 27 Dec North Bay Interior Mountains

Sunny. Highs in the upper 40s. North Winds 5 to 10 Mph.

Tonight 27 Dec North Bay Interior Mountains

Mostly clear in the evening then becoming partly cloudy. Lows around 40. North Winds around 5 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

    48.2 °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

    45.6 °F

  • Average 2020–2025

    58 °F

  • Average High 2020–2025

    72.5 °F
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