Heath Dam Reservoir Weather Forecast

    • 47
    • 78

    Mostly Sunny

    • 49
    • 82

    Mostly Sunny

    • 48
    • 82

    Chance Thunderstorms

    • 47
    • 80

    Chance Thunderstorms

    • 46
    • 77

    Chance Thunderstorms

    • 48
    • 79

    Mostly Sunny

Today 22 Jul Lassen-Eastern Plumas-Eastern Sierra Counties

Sunny. Highs 76 to 86. Light Winds becoming southwest around 10 Mph in the afternoon.

Tonight 22 Jul Lassen-Eastern Plumas-Eastern Sierra Counties

Partly cloudy in the evening then clearing. Lows 42 to 52. West Winds 10 to 15 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Heath Dam Reservoir Temperature Statistics

July Temperature

Alturas (45.4 miles)

  • Lowest 5 July, 2025

    40.6 °F

  • Average July

    71.3 °F

  • Highest 13 July, 2025

    101.6 °F

Climate (2020–Present)

Alturas (45.4 miles)

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  • Average Low 2020–2025

    32.9 °F

  • Average 2020–2025

    49.3 °F

  • Average High 2020–2025

    64.5 °F
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