Siskiyou Mountain Park Weather Forecast

    • 46
    • 52

    Mostly Cloudy

    • 46
    • 57

    Partly Sunny

    • 47
    • 56

    Mostly Cloudy

    • 48
    • 58

    Mostly Cloudy

    • 47
    • 59

    Mostly Sunny

    • 42
    • 60

    Mostly Sunny

Today 7 Dec Jackson County

Mostly cloudy with a 30 percent chance of rain. Patchy dense fog late this afternoon. Highs around 50. Southeast Winds around 5 Mph shifting to the south this afternoon.

Tonight 7 Dec Jackson County

Mostly cloudy with a 20 percent chance of rain. Lows in the lower to mid 40s. Southeast Winds around 5 Mph.

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Siskiyou Mountain Park Temperature Statistics

December Temperature

Montague Siskiyou County Airport (28.6 miles)

  • Lowest 1 December, 2025

    21.9 °F

  • Average December

    35.6 °F

  • Highest 5 December, 2025

    53.1 °F

Climate (2020–Present)

Montague Siskiyou County Airport (28.6 miles)

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  • Average Low 2020–2025

    39.7 °F

  • Average 2020–2025

    54.1 °F

  • Average High 2020–2025

    68.9 °F
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