South Mountain Reservoir Weather Forecast

    • 43
    • 73

    Mostly Sunny

    • 47
    • 77

    Mostly Sunny

    • 49
    • 81

    Sunny

    • 52
    • 87

    Sunny

    • 54
    • 88

    Partly Sunny

    • 52
    • 86

    Mostly Sunny

    • 51
    • 85

    Mostly Sunny

Today 1 Jul Modoc County

Sunny. Highs in the lower to mid 70s. Northwest Winds 5 to 10 Mph shifting to the west late this afternoon.

Tonight 1 Jul Modoc County

Mostly clear. Lows in the lower to mid 40s. Northwest Winds 10 to 15 Mph shifting to the north around 5 Mph well after midnight.

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South Mountain Reservoir Temperature Statistics

July Temperature

Alturas (22.4 miles)

  • Lowest

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  • Average July

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Climate (2021–2026)

Alturas (22.4 miles)

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  • Average Low 2021–2026

    33.4 °F

  • Average 2021–2026

    49.4 °F

  • Average High 2021–2026

    64.8 °F
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