High Rock Lake Weather Forecast

    • 38
    • 74

    Decreasing Clouds

    • 41
    • 66

    Partly Sunny

    • 43
    • 73

    Partly Sunny

    • 44
    • 78

    Partly Sunny

    • 33
    • 75

    Partly Sunny

    • 34
    • 62

    Partly Sunny

Today 21 Mar Humboldt County

Breezy. Mostly sunny. Highs 67 to 77. West Winds up to 10 Mph increasing to 15 to 25 Mph in the afternoon.

Tonight 21 Mar Humboldt County

Colder. Partly cloudy. Lows 36 to 42. Northwest Winds 15 to 20 Mph shifting to the north 5 to 15 Mph after midnight. Gusts up to 35 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

High Rock Lake Temperature Statistics

March Temperature

Alturas (67.1 miles)

  • Lowest 11 March, 2026

    20.6 °F

  • Average March

    45.7 °F

  • Highest 18 March, 2026

    79 °F

Climate (2021–Present)

Alturas (67.1 miles)

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  • Average Low 2021–2026

    33.5 °F

  • Average 2021–2026

    49.6 °F

  • Average High 2021–2026

    64.8 °F
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