High Rock Lake Weather Forecast

    • 53
    • 87

    Mostly Sunny

    • 53
    • 82

    Mostly Sunny

    • 55
    • 86

    Mostly Sunny

    • 56
    • 88

    Partly Sunny

    • 57
    • 88

    Partly Sunny

    • 56
    • 88

    Partly Sunny

    • 57
    • 88

    Mostly Sunny

Today 3 Aug Humboldt County

Sunny. Highs 81 to 91. Southwest Winds 10 to 15 Mph.

Tonight 3 Aug Humboldt County

Mostly clear. Lows 52 to 58. Northwest Winds 5 to 15 Mph.

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High Rock Lake Temperature Statistics

August Temperature

Alturas (67.1 miles)

  • Lowest 1 August, 2025

    45 °F

  • Average August

    68.2 °F

  • Highest 1 August, 2025

    82.9 °F

Climate (2020–Present)

Alturas (67.1 miles)

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  • Average Low 2020–2025

    32.9 °F

  • Average 2020–2025

    49.2 °F

  • Average High 2020–2025

    64.5 °F
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