Duvall Lake Weather Forecast

    • 61
    • 95

    Increasing Clouds

    • 58
    • 89

    Chance Rain Showers

    • 58
    • 82

    Chance Rain Showers

    • 59
    • 86

    Mostly Sunny

    • 62
    • 91

    Sunny

    • 61
    • 93

    Chance Rain Showers

Today 17 Sep North Bay Interior Mountains

Sunny. Highs in the lower 80s to mid 90s. North Winds around 5 Mph. Becoming west in the afternoon.

Tonight 17 Sep North Bay Interior Mountains

Partly cloudy. Lows in the 60s. West Winds 5 to 10 Mph.

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  • Temperature Real-Time

Duvall Lake Temperature Statistics

September Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (20.5 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 (20.5 miles)

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  • Average Low 2020–2025

    45.3 °F

  • Average 2020–2025

    57.9 °F

  • Average High 2020–2025

    72.8 °F
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