Siskiyou Mountain Park Weather Forecast

    • 51
    • 83

    Rain Likely

    • 41
    • 62

    Increasing Clouds

    • 45
    • 71

    Partly Sunny

    • 42
    • 67

    Mostly Sunny

    • 44
    • 69

    Mostly Sunny

    • 46
    • 74

    Mostly Sunny

    • 48
    • 77

    Mostly Sunny

Today 24 Sep Jackson County

Partly cloudy. Highs in the lower to mid 70s.

Tonight 24 Sep Jackson County

Mostly cloudy. Rain likely late this evening. Rain after Midnight, then chance of rain well after midnight. Lows in the mid 40s to lower 50s. West Winds 5 to 10 Mph. Chance of rain 90 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Siskiyou Mountain Park Temperature Statistics

September Temperature

Montague Siskiyou County Airport (28.6 miles)

  • Lowest 4 September, 2026

    35.7 °F

  • Average September

    61 °F

  • Highest 10 September, 2026

    94.6 °F

Climate (2021–2026)

Montague Siskiyou County Airport (28.6 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    39.2 °F

  • Average 2021–2026

    53.9 °F

  • Average High 2021–2026

    69 °F
Get WillyWeather+ to remove ads