Round Valley Reservoir Weather Forecast

    • 39
    • 66

    Sunny

    • 39
    • 65

    Sunny

    • 39
    • 69

    Sunny

    • 36
    • 72

    Mostly Sunny

    • 33
    • 69

    Mostly Sunny

    • 34
    • 59

    Mostly Cloudy

    • 32
    • 52

    Partly Sunny

Today 14 Oct Lassen-Eastern Plumas-Eastern Sierra Counties

Sunny. Highs 65 to 75. Light Winds becoming northeast around 10 Mph in the afternoon.

Tonight 14 Oct Lassen-Eastern Plumas-Eastern Sierra Counties

Clear. Lows 30 to 40. Light Winds.

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Round Valley Reservoir Temperature Statistics

October Temperature

Alturas (67.1 miles)

  • Lowest 12 October, 2026

    18 °F

  • Average October

    57.4 °F

  • Highest 3 October, 2026

    89.7 °F

Climate (2021–2026)

Alturas (67.1 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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