Robert Louis Stevenson State Park Weather Forecast

    • 70
    • 81

    Mostly Sunny

    • 71
    • 79

    Partly Sunny

    • 65
    • 77

    Partly Sunny

    • 66
    • 76

    Mostly Sunny

    • 64
    • 77

    Mostly Sunny

    • 60
    • 73

    Mostly Sunny

Today 19 Aug North Bay Interior Mountains

Sunny. Highs in the lower 80s to mid 90s. Southwest Winds 5 to 10 Mph.

Tonight 19 Aug North Bay Interior Mountains

Mostly clear. Lows in the upper 50s to mid 60s. West Winds around 5 Mph in the evening. Becoming light.

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Robert Louis Stevenson State Park Temperature Statistics

August Temperature

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

  • Lowest 10 August, 2026

    49.6 °F

  • Average August

    69 °F

  • Highest 1 August, 2026

    98.7 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    58.6 °F

  • Average High 2021–2026

    72.8 °F
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