Big Sage Reservoir Weather Forecast

    • 43
    • 62

    Mostly Sunny

    • 37
    • 59

    Chance Rain Showers

    • 40
    • 62

    Mostly Sunny

    • 44
    • 71

    Partly Sunny

    • 47
    • 71

    Partly Sunny

    • 46
    • 71

    Chance Rain

Today 5 Sep Modoc County

Sunny. Highs in the lower 60s to lower 70s. South Winds 5 to 10 Mph shifting to the southwest late in the afternoon.

Tonight 5 Sep Modoc County

Mostly clear. Lows in the lower to mid 40s. Southwest Winds 10 to 15 Mph shifting to the south 5 to 10 Mph after midnight.

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Big Sage Reservoir Temperature Statistics

September Temperature

Alturas (9.3 miles)

  • Lowest

  • Average September

  • Highest

Climate (2021–2026)

Alturas (9.3 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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