Round Valley Reservoir Weather Forecast

    • 27
    • 49

    Becoming Sunny

    • 25
    • 47

    Sunny

    • 29
    • 46

    Partly Sunny

    • 30
    • 47

    Partly Sunny

    • 29
    • 50

    Mostly Sunny

    • 28
    • 48

    Mostly Sunny

    • 29
    • 45

    Partly Sunny

Today 18 Jan Lassen-Eastern Plumas-Eastern Sierra Counties

Partly cloudy. Highs 48 to 58. Light Winds.

Tonight 18 Jan Lassen-Eastern Plumas-Eastern Sierra Counties

Clear. Lows 19 to 29. Light Winds.

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Round Valley Reservoir Temperature Statistics

January Temperature

Alturas (67.1 miles)

  • Lowest 9 January, 2026

    9 °F

  • Average January

    37.3 °F

  • Highest 14 January, 2026

    59 °F

Climate (2021–Present)

Alturas (67.1 miles)

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  • Average Low 2021–2026

    33.5 °F

  • Average 2021–2026

    49.4 °F

  • Average High 2021–2026

    64.5 °F
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