Lake Siskiyou Weather Forecast

    • 35
    • 59

    Mostly Sunny

    • 41
    • 66

    Mostly Sunny

    • 42
    • 72

    Mostly Sunny

    • 42
    • 73

    Mostly Sunny

    • 35
    • 61

    Chance Rain

    • 38
    • 61

    Mostly Sunny

    • 38
    • 64

    Partly Sunny

Today 15 Oct South Central Siskiyou County

Mostly cloudy then becoming partly cloudy early this afternoon then becoming sunny. Highs in the lower to mid 50s. Southwest Winds 5 to 10 Mph.

Tonight 15 Oct South Central Siskiyou County

Partly cloudy. Lows in the mid 20s to mid 30s. West Winds around 5 Mph shifting to the north after midnight.

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Lake Siskiyou Temperature Statistics

October Temperature

Mount Shasta (2.5 miles)

  • Lowest 11 October, 2025

    30.9 °F

  • Average October

    49.6 °F

  • Highest 7 October, 2025

    73.9 °F

Climate (2020–Present)

Mount Shasta (2.5 miles)

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  • Average Low 2020–2025

    39.4 °F

  • Average 2020–2025

    52.3 °F

  • Average High 2020–2025

    65.5 °F
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