Robert Louis Stevenson State Park Weather Forecast

    • 68
    • 76

    Mostly Sunny

    • 63
    • 76

    Partly Sunny

    • 55
    • 70

    Mostly Sunny

    • 52
    • 67

    Mostly Sunny

    • 53
    • 64

    Mostly Sunny

    • 59
    • 71

    Sunny

Today 23 Sep North Bay Interior Mountains

Sunny. Highs in the 80s. North Winds up to 5 Mph. Becoming southwest in the afternoon.

Tonight 23 Sep North Bay Interior Mountains

Mostly clear. Lows in the mid 60s. Light Winds.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Robert Louis Stevenson State Park Temperature Statistics

September Temperature

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

  • Lowest 5 September, 2026

    46.7 °F

  • Average September

    67 °F

  • Highest 10 September, 2026

    101.6 °F

Climate (2021–2026)

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

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

  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    58.7 °F

  • Average High 2021–2026

    72.9 °F
Get WillyWeather+ to remove ads