South Mountain Reservoir Weather Forecast

    • 40
    • 47

    Rain

    • 32
    • 50

    Slight Chance Rain

    • 38
    • 59

    Partly Sunny

    • 40
    • 64

    Mostly Cloudy

    • 38
    • 63

    Mostly Cloudy

    • 40
    • 61

    Mostly Cloudy

Today 6 Nov Modoc County

Mostly cloudy. Slight chance of rain in the Morning, then rain likely in the afternoon. Snow level 7000 feet in the afternoon. Highs in the mid 40s to lower 50s. Southwest Winds 10 to 15 Mph. Chance of rain 60 percent.

Tonight 6 Nov Modoc County

Rain. Lows around 40. Southwest Winds 10 to 15 Mph. Chance of rain 80 percent.

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South Mountain Reservoir Temperature Statistics

November Temperature

Alturas (22.4 miles)

  • Lowest 1 November, 2025

    32 °F

  • Average November

    54.6 °F

  • Highest 1 November, 2025

    69.1 °F

Climate (2020–Present)

Alturas (22.4 miles)

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  • Average Low 2020–2025

    33.1 °F

  • Average 2020–2025

    49.1 °F

  • Average High 2020–2025

    64.2 °F
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