Grass Lake Weather Forecast

    • 47
    • 84

    Sunny

    • 36
    • 75

    Increasing Clouds

    • 26
    • 52

    Chance Rain/Snow

    • 23
    • 49

    Mostly Sunny

    • 27
    • 54

    Mostly Sunny

    • 30
    • 58

    Mostly Sunny

    • 32
    • 61

    Mostly Sunny

Today 8 Oct North Central and Southeast Siskiyou County

Sunny. Highs in the lower 60s to lower 70s.

Tonight 8 Oct North Central and Southeast Siskiyou County

Clear. Lows in the mid 40s to mid 50s. Northwest Winds around 5 Mph shifting to the southwest well after midnight.

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  • Temperature Real-Time

Grass Lake Temperature Statistics

October Temperature

Montague Siskiyou County Airport (17.4 miles)

  • Lowest 1 October, 2026

    40.6 °F

  • Average October

    66.7 °F

  • Highest 5 October, 2026

    91 °F

Climate (2021–2026)

Montague Siskiyou County Airport (17.4 miles)

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  • Average Low 2021–2026

    39.2 °F

  • Average 2021–2026

    54 °F

  • Average High 2021–2026

    69.1 °F
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