West Valley Reservoir Weather Forecast

    • 52
    • 85

    Mostly Cloudy

    • 48
    • 83

    Mostly Sunny

    • 48
    • 85

    Sunny

    • 49
    • 86

    Sunny

    • 48
    • 86

    Mostly Sunny

    • 43
    • 81

    Mostly Sunny

    • 34
    • 68

    Partly Sunny

Today 4 Oct Modoc County

Partly cloudy in the morning then becoming sunny. Highs in the mid 50s to mid 60s.

Tonight 4 Oct Modoc County

Mostly cloudy until well after midnight then becoming partly cloudy. Lows in the lower to mid 50s. Northwest Winds 5 to 10 Mph shifting to the north well after midnight.

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West Valley Reservoir Temperature Statistics

October Temperature

Alturas (21.1 miles)

  • Lowest 1 October, 2026

    44.1 °F

  • Average October

    70.3 °F

  • Highest 1 October, 2026

    86 °F

Climate (2021–2026)

Alturas (21.1 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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