Bell Canyon Reservoir Weather Forecast

    • 54
    • 88

    Mostly Sunny

    • 52
    • 87

    Increasing Clouds

    • 52
    • 81

    Partly Sunny

    • 52
    • 80

    Mostly Sunny

    • 53
    • 86

    Mostly Sunny

    • 54
    • 89

    Mostly Sunny

    • 53
    • 86

    Partly Sunny

Today 14 Sep North Bay Interior Valleys

Sunny. Highs in the mid 70s to lower 90s. West Winds 10 to 15 Mph.

Tonight 14 Sep North Bay Interior Valleys

Mostly clear except patchy fog after midnight. Lows in the 50s. West Winds 10 to 15 Mph. Becoming southwest up to 5 Mph after midnight.

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Bell Canyon Reservoir Temperature Statistics

September Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (18 miles)

  • Lowest 5 September, 2026

    46.7 °F

  • Average September

    68.3 °F

  • Highest 10 September, 2026

    101.6 °F

Climate (2021–2026)

Santa Rosa, Santa Rosa Sonoma County Airport (18 miles)

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    58.7 °F

  • Average High 2021–2026

    72.8 °F
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