Ducasse Reservoir Weather Forecast

    • 47
    • 84

    Mostly Sunny

    • 50
    • 86

    Mostly Cloudy

    • 45
    • 77

    Mostly Cloudy

    • 44
    • 78

    Partly Sunny

    • 46
    • 81

    Mostly Sunny

    • 50
    • 84

    Partly Sunny

Today 17 Sep Lassen-Eastern Plumas-Eastern Sierra Counties

Sunny. Highs 80 to 90. Light Winds becoming southeast around 10 Mph in the afternoon.

Tonight 17 Sep Lassen-Eastern Plumas-Eastern Sierra Counties

Clear in the evening then becoming partly cloudy. Lows 45 to 55. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Ducasse Reservoir Temperature Statistics

September Temperature

Alturas (44.7 miles)

  • Lowest 15 September, 2025

    35.1 °F

  • Average September

    65.9 °F

  • Highest 1 September, 2025

    91 °F

Climate (2020–Present)

Alturas (44.7 miles)

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  • Average Low 2020–2025

    33 °F

  • Average 2020–2025

    49.1 °F

  • Average High 2020–2025

    64.4 °F
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