Buckhorn Reservoir Weather Forecast

    • 42
    • 68

    Mostly Sunny

    • 46
    • 73

    Mostly Sunny

    • 48
    • 77

    Partly Sunny

    • 49
    • 79

    Partly Sunny

    • 48
    • 78

    Mostly Sunny

    • 49
    • 78

    Mostly Sunny

Today 18 Sep Lassen-Eastern Plumas-Eastern Sierra Counties

Sunny. Highs 67 to 77. Light Winds becoming north around 10 Mph in the afternoon.

Tonight 18 Sep Lassen-Eastern Plumas-Eastern Sierra Counties

Clear. Lows 36 to 46. North Winds around 10 Mph in the evening becoming light.

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Buckhorn Reservoir Temperature Statistics

September Temperature

Alturas (49.7 miles)

  • Lowest 14 September, 2026

    28.7 °F

  • Average September

    58.8 °F

  • Highest 10 September, 2026

    85.6 °F

Climate (2021–2026)

Alturas (49.7 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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