West Valley Reservoir Weather Forecast

    • 22
    • 53

    Becoming Sunny

    • 22
    • 50

    Mostly Sunny

    • 29
    • 60

    Mostly Sunny

    • 30
    • 67

    Mostly Sunny

    • 35
    • 72

    Sunny

    • 37
    • 73

    Mostly Sunny

    • 36
    • 74

    Mostly Sunny

Today 11 Oct Modoc County

Sunny. Highs in the mid 60s to mid 70s.

Tonight 11 Oct Modoc County

Mostly clear. Lows in the lower to mid 20s. North Winds 10 to 15 Mph.

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West Valley Reservoir Temperature Statistics

October Temperature

Alturas (21.1 miles)

  • Lowest 1 October, 2026

    34.6 °F

  • Average October

    64.8 °F

  • Highest 3 October, 2026

    89.7 °F

Climate (2021–2026)

Alturas (21.1 miles)

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  • Average Low 2021–2026

    33.3 °F

  • Average 2021–2026

    49.2 °F

  • Average High 2021–2026

    64.8 °F
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