Siskiyou Mountain Park Weather Forecast

    • 55
    • 76

    Rain Showers

    • 57
    • 71

    Rain Showers

    • 56
    • 71

    Chance Rain Showers

    • 54
    • 74

    Slight Chance Rain Showers

    • 57
    • 81

    Partly Sunny

    • 58
    • 79

    Chance Rain Showers

    • 53
    • 72

    Chance Rain Showers

Today 8 Sep Jackson County

Mostly cloudy. Scattered Showers and isolated Thunderstorms this Morning, then Showers and scattered Thunderstorms this afternoon. Highs in the mid 70s to lower 80s in the Valleys and in the mid 60s to mid 70s at higher Elevations. Southeast Winds around 5 Mph shifting to the west this afternoon. Chance of precipitation 80 percent.

Tonight 8 Sep Jackson County

Mostly cloudy. Showers and scattered Thunderstorms in the Evening, then scattered Showers after midnight. Lows in the lower to mid 50s. Northwest Winds around 5 Mph shifting to the southeast after Midnight, then shifting to the northeast well after midnight. Chance of precipitation 90 percent.

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Siskiyou Mountain Park Temperature Statistics

September Temperature

Montague Siskiyou County Airport (28.6 miles)

  • Lowest 1 September, 2025

    48 °F

  • Average September

    74.5 °F

  • Highest 1 September, 2025

    95 °F

Climate (2020–Present)

Montague Siskiyou County Airport (28.6 miles)

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  • Average Low 2020–2025

    39.6 °F

  • Average 2020–2025

    54.2 °F

  • Average High 2020–2025

    69.1 °F
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