Etna Weather Forecast

    • 52
    • 85

    Mostly Sunny

    • 54
    • 86

    Mostly Sunny

    • 53
    • 86

    Mostly Sunny

    • 52
    • 85

    Mostly Sunny

    • 41
    • 77

    Slight Chance Rain

    • 41
    • 65

    Chance Rain

    • 43
    • 70

    Partly Sunny

Today 21 May Western Siskiyou County

Sunny. Highs in the mid 70s to mid 80s. North Winds 5 to 10 Mph.

Tonight 21 May Western Siskiyou County

Clear. Lows in the lower to mid 50s. North Winds 10 to 15 Mph shifting to the northeast 5 to 10 Mph after midnight.

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Etna Temperature Statistics

May Temperature

Montague Siskiyou County Airport (31.1 miles)

  • Lowest 14 May, 2026

    34.6 °F

  • Average May

    60.3 °F

  • Highest 12 May, 2026

    89.7 °F

Climate (2021–Present)

Montague Siskiyou County Airport (31.1 miles)

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  • Average Low 2021–2026

    39.6 °F

  • Average 2021–2026

    54.3 °F

  • Average High 2021–2026

    69.2 °F
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