Etna Weather Forecast

    • 57
    • 90

    Mostly Sunny

    • 58
    • 93

    Mostly Sunny

    • 57
    • 91

    Mostly Sunny

    • 56
    • 91

    Mostly Sunny

    • 56
    • 90

    Mostly Sunny

    • 54
    • 89

    Mostly Sunny

    • 54
    • 87

    Mostly Sunny

Today 23 Aug Western Siskiyou County

Sunny. Highs in the lower 80s to lower 90s. North Winds around 5 Mph shifting to the northwest late this afternoon.

Tonight 23 Aug Western Siskiyou County

Mostly clear this evening then becoming partly cloudy. Lows in the mid 50s to lower 60s. Northwest Winds 5 to 10 Mph shifting to the east well after midnight.

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Etna Temperature Statistics

August Temperature

Montague Siskiyou County Airport (31.1 miles)

  • Lowest 16 August, 2026

    47.6 °F

  • Average August

    75.5 °F

  • Highest 7 August, 2026

    104.6 °F

Climate (2021–2026)

Montague Siskiyou County Airport (31.1 miles)

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  • Average Low 2021–2026

    39.3 °F

  • Average 2021–2026

    54 °F

  • Average High 2021–2026

    69.1 °F
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