Bell Canyon Reservoir Weather Forecast

    • 44
    • 61

    Dense Fog

    • 48
    • 57

    Mostly Cloudy

    • 49
    • 56

    Rain

    • 50
    • 55

    Rain

    • 48
    • 56

    Rain

    • 44
    • 55

    Rain Likely

    • 44
    • 51

    Rain

Today 17 Dec North Bay Interior Valleys

Partly cloudy. Highs in the 50s to mid 60s. West Winds 5 to 10 Mph.

Tonight 17 Dec North Bay Interior Valleys

Partly cloudy in the evening then becoming mostly cloudy. Widespread dense fog. Lows in the 40s. West Winds up to 5 Mph in the evening. Becoming light.

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Bell Canyon Reservoir Temperature Statistics

December Temperature

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

  • Lowest 4 December, 2025

    34 °F

  • Average December

    43.9 °F

  • Highest 3 December, 2025

    68 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    45.5 °F

  • Average 2020–2025

    57.9 °F

  • Average High 2020–2025

    72.5 °F
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