Steamboat Lake Weather Forecast

    • 47
    • 79

    Sunny

    • 49
    • 83

    Mostly Sunny

    • 51
    • 86

    Mostly Sunny

    • 50
    • 86

    Mostly Sunny

    • 47
    • 84

    Mostly Sunny

    • 49
    • 84

    Partly Sunny

Today 18 Sep Central Siskiyou County

Sunny. Highs in the lower 70s to lower 80s. Light Winds becoming north around 5 Mph this afternoon.

Tonight 18 Sep Central Siskiyou County

Clear. Lows in the mid 40s to lower 50s. North Winds around 5 Mph shifting to the east after Midnight, then becoming light well after midnight.

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Steamboat Lake Temperature Statistics

September Temperature

Montague Siskiyou County Airport (5 miles)

  • Lowest 4 September, 2026

    35.7 °F

  • Average September

    60.1 °F

  • Highest 10 September, 2026

    94.6 °F

Climate (2021–2026)

Montague Siskiyou County Airport (5 miles)

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  • Average Low 2021–2026

    39.3 °F

  • Average 2021–2026

    53.9 °F

  • Average High 2021–2026

    69 °F
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