Big Sage Reservoir Weather Forecast

    • 37
    • 67

    Increasing Clouds

    • 35
    • 66

    Partly Sunny

    • 41
    • 63

    Partly Sunny

    • 41
    • 59

    Rain Likely

    • 35
    • 48

    Rain Likely

    • 32
    • 45

    Chance Rain

Today 21 Oct Modoc County

Sunny. Highs in the mid 60s to lower 70s. East Winds around 5 Mph shifting to the south late this afternoon.

Tonight 21 Oct Modoc County

Mostly clear. Lows in the mid 30s to lower 40s. South Winds 5 to 10 Mph shifting to the southeast well after midnight.

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  • Temperature Real-Time

Big Sage Reservoir Temperature Statistics

October Temperature

Alturas (9.3 miles)

  • Lowest 16 October, 2025

    24.1 °F

  • Average October

    49.4 °F

  • Highest 7 October, 2025

    73 °F

Climate (2020–Present)

Alturas (9.3 miles)

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  • Average Low 2020–2025

    33 °F

  • Average 2020–2025

    49.1 °F

  • Average High 2020–2025

    64.3 °F
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