Siskiyou Mountain Park Weather Forecast

    • 56
    • 89

    Mostly Sunny

    • 51
    • 82

    Becoming Sunny

    • 45
    • 68

    Chance Rain

    • 45
    • 65

    Mostly Sunny

    • 49
    • 75

    Sunny

    • 53
    • 81

    Mostly Sunny

    • 57
    • 87

    Mostly Sunny

Today 10 Sep Jackson County

Sunny. Highs in the lower to mid 90s in the Valleys and in the lower to mid 80s at higher Elevations. Northeast Winds around 5 Mph shifting to the west in the late morning and afternoon.

Tonight 10 Sep Jackson County

Mostly clear. Lows in the lower to mid 50s. Northwest Winds 10 to 15 Mph decreasing to around 5 Mph after midnight.

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Siskiyou Mountain Park Temperature Statistics

September Temperature

Montague Siskiyou County Airport (28.6 miles)

  • Lowest 4 September, 2026

    35.7 °F

  • Average September

    56.8 °F

  • Highest 8 September, 2026

    84.9 °F

Climate (2021–2026)

Montague Siskiyou County Airport (28.6 miles)

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  • Average Low 2021–2026

    39.3 °F

  • Average 2021–2026

    54 °F

  • Average High 2021–2026

    69 °F
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