Big Sage Reservoir Weather Forecast

    • 36
    • 71

    Mostly Sunny

    • 35
    • 69

    Mostly Sunny

    • 32
    • 59

    Mostly Cloudy

    • 32
    • 56

    Partly Sunny

    • 32
    • 58

    Chance Rain/Snow

    • 29
    • 53

    Chance Rain

Today 17 Oct Modoc County

Sunny. Highs in the lower to mid 70s. South Winds 5 to 10 Mph shifting to the southwest in the afternoon.

Tonight 17 Oct Modoc County

Partly cloudy in the evening then clearing. Lows in the mid 30s to lower 40s. West Winds 5 to 10 Mph shifting to the southeast after midnight.

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  • Temperature Real-Time

Big Sage Reservoir Temperature Statistics

October Temperature

Alturas (9.3 miles)

  • Lowest 12 October, 2026

    15.7 °F

  • Average October

    55.8 °F

  • Highest 3 October, 2026

    89.7 °F

Climate (2021–2026)

Alturas (9.3 miles)

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  • Average Low 2021–2026

    33.2 °F

  • Average 2021–2026

    49.2 °F

  • Average High 2021–2026

    64.8 °F
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