Arched Rock Beach Weather Forecast

    • 55
    • 63

    Partly Sunny

    • 56
    • 64

    Mostly Cloudy

    • 57
    • 61

    Chance Rain Showers

    • 57
    • 62

    Slight Chance Rain Showers

    • 56
    • 61

    Mostly Cloudy

    • 56
    • 62

    Partly Sunny

Today 16 Sep Coastal North Bay Including Point Reyes National Seashore

Sunny. Patchy fog in the morning. Highs in the 70s. South Winds around 5 Mph. Becoming west in the afternoon.

Tonight 16 Sep Coastal North Bay Including Point Reyes National Seashore

Partly cloudy. Lows in the mid 50s. West Winds around 5 Mph in the evening. Becoming light.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Arched Rock Beach Temperature Statistics

September Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (16.2 miles)

  • Lowest 7 September, 2025

    48.9 °F

  • Average September

    65.3 °F

  • Highest 1 September, 2025

    99 °F

Climate (2020–Present)

Santa Rosa, Santa Rosa Sonoma County Airport (16.2 miles)

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

  • Average Low 2020–2025

    45.3 °F

  • Average 2020–2025

    57.9 °F

  • Average High 2020–2025

    72.8 °F
Get WillyWeather+ to remove ads