South Mountain Reservoir Weather Forecast

    • 46
    • 79

    Decreasing Clouds

    • 47
    • 83

    Becoming Sunny

    • 49
    • 83

    Partly Sunny

    • 48
    • 81

    Mostly Sunny

    • 48
    • 82

    Sunny

    • 48
    • 83

    Sunny

    • 47
    • 81

    Mostly Sunny

Today 2 Oct Modoc County

Mostly clear. Lows in the mid 40s to lower 50s. Highs in the mid 70s to mid 80s.

Tonight 2 Oct Modoc County

Mostly clear until well after midnight then becoming partly cloudy. Lows in the mid 40s to lower 50s. West Winds around 5 Mph early this evening becoming Light, then becoming east around 5 Mph well after midnight.

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South Mountain Reservoir Temperature Statistics

October Temperature

Alturas (22.4 miles)

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  • Average October

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Climate (2021–2026)

Alturas (22.4 miles)

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  • Average Low 2021–2026

    33.2 °F

  • Average 2021–2026

    49.1 °F

  • Average High 2021–2026

    64.7 °F
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