Siskiyou Mountain Park Weather Forecast

    • 56
    • 84

    Chance Rain Showers

    • 51
    • 73

    Slight Chance Rain Showers

    • 62
    • 85

    Sunny

    • 63
    • 91

    Sunny

    • 54
    • 83

    Mostly Sunny

    • 54
    • 80

    Mostly Sunny

Today 13 Sep Jackson County

Sunny. Highs in the mid 80s to lower 90s in the Valleys and in the mid 70s to lower 80s at higher Elevations. East Winds around 5 Mph early this morning becoming Light, then becoming west around 5 Mph this afternoon.

Tonight 13 Sep Jackson County

Mostly cloudy. Chance of Showers and slight chance of Thunderstorms after midnight. Lows in the lower to mid 50s. West Winds 5 to 10 Mph. Chance of precipitation 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Siskiyou Mountain Park Temperature Statistics

September Temperature

Montague Siskiyou County Airport (28.6 miles)

  • Lowest 1 September, 2025

    48 °F

  • Average September

    69.3 °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 °F
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