Heath Dam Reservoir Weather Forecast

    • 48
    • 80

    Mostly Sunny

    • 48
    • 82

    Mostly Sunny

    • 48
    • 81

    Mostly Sunny

    • 55
    • 89

    Sunny

    • 53
    • 91

    Mostly Sunny

    • 44
    • 81

    Partly Sunny

Today 27 May Lassen-Eastern Plumas-Eastern Sierra Counties

Sunny. Highs 78 to 88. East Winds 10 to 15 Mph.

Tonight 27 May Lassen-Eastern Plumas-Eastern Sierra Counties

Clear. Lows 46 to 56. West Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Heath Dam Reservoir Temperature Statistics

May Temperature

Alturas (45.4 miles)

  • Lowest 15 May, 2025

    28.9 °F

  • Average May

    52.8 °F

  • Highest 9 May, 2025

    81.6 °F

Climate (2020–Present)

Alturas (45.4 miles)

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  • Average Low 2020–2025

    32.9 °F

  • Average 2020–2025

    49.2 °F

  • Average High 2020–2025

    64.3 °F
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