Etna Weather Forecast

    • 50
    • 84

    Partly Sunny

    • 52
    • 82

    Becoming Sunny

    • 54
    • 86

    Mostly Sunny

    • 55
    • 86

    Mostly Sunny

    • 55
    • 88

    Partly Sunny

    • 59
    • 91

    Mostly Sunny

    • 61
    • 93

    Mostly Sunny

Today 3 Aug Western Siskiyou County

Sunny with a 10 percent chance of Thunderstorms. Highs in the lower 70s to lower 80s. West Winds 5 to 10 Mph.

Tonight 3 Aug Western Siskiyou County

Mostly clear. A 10 percent chance of Thunderstorms early this evening. Lows around 50. Northwest Winds 10 to 15 Mph decreasing to around 5 Mph after midnight.

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Etna Temperature Statistics

August Temperature

Montague Siskiyou County Airport (31.1 miles)

  • Lowest 1 August, 2025

    53.1 °F

  • Average August

    68 °F

  • Highest 1 August, 2025

    88 °F

Climate (2020–Present)

Montague Siskiyou County Airport (31.1 miles)

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  • Average Low 2020–2025

    39.7 °F

  • Average 2020–2025

    54.2 °F

  • Average High 2020–2025

    69.1 °F
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