Siskiyou Mountain Park Weather Forecast

    • 43
    • 61

    Becoming Sunny

    • 43
    • 60

    Mostly Sunny

    • 42
    • 61

    Mostly Sunny

    • 41
    • 61

    Partly Sunny

    • 44
    • 57

    Mostly Cloudy

    • 46
    • 56

    Rain Likely

Today 10 Dec Jackson County

Mostly cloudy then becoming partly cloudy early this afternoon then becoming sunny. Patchy dense fog. Highs in the mid 50s to lower 60s. East Winds around 5 Mph shifting to the southwest this afternoon.

Tonight 10 Dec Jackson County

Mostly clear. Patchy dense fog. Lows in the mid 30s to lower 40s. East 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

    37.9 °F

  • Highest 6 December, 2025

    57.9 °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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