Weeks Lake Weather Forecast

    • 62
    • 96

    Increasing Clouds

    • 60
    • 87

    Chance Rain Showers

    • 58
    • 81

    Chance Rain Showers

    • 59
    • 86

    Mostly Sunny

    • 61
    • 91

    Sunny

    • 61
    • 94

    Chance Rain Showers

    • 57
    • 81

    Chance Rain Showers

Today 17 Sep North Bay Interior Mountains

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

Tonight 17 Sep North Bay Interior Mountains

Partly cloudy. Lows in the 60s. West Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Weeks Lake Temperature Statistics

September Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (24.2 miles)

  • Lowest 14 September, 2025

    48 °F

  • Average September

    65.7 °F

  • Highest 1 September, 2025

    99 °F

Climate (2020–Present)

Santa Rosa, Santa Rosa Sonoma County Airport (24.2 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