Petaluma River - Lakeville Weather Forecast

    • 56
    • 92

    Increasing Clouds

    • 58
    • 81

    Chance Rain Showers

    • 56
    • 80

    Slight Chance Rain Showers

    • 56
    • 83

    Mostly Sunny

    • 57
    • 87

    Mostly Sunny

    • 59
    • 88

    Chance Rain Showers

Today 17 Sep North Bay Interior Valleys

Sunny. Areas of dense fog in the morning. Highs in the lower 80s to mid 90s. Southwest Winds up to 5 Mph increasing to 10 to 15 Mph in the afternoon.

Tonight 17 Sep North Bay Interior Valleys

Partly cloudy. Lows in the 50s to mid 60s. Southwest Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Petaluma River - Lakeville Temperature Statistics

September Temperature

Novato / Gnoss Field (3.7 miles)

  • Lowest 1 September, 2025

    51.8 °F

  • Average September

    66.1 °F

  • Highest 15 September, 2025

    96.8 °F

Climate (2020–Present)

Novato / Gnoss Field (3.7 miles)

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

  • Average Low 2020–2025

    46 °F

  • Average 2020–2025

    57.5 °F

  • Average High 2020–2025

    72.6 °F
Get WillyWeather+ to remove ads