Siskiyou Mountain Park Weather Forecast

    • 35
    • 47

    Rain Likely

    • 37
    • 44

    Rain

    • 37
    • 45

    Rain

    • 35
    • 45

    Rain

    • 29
    • 42

    Chance Rain/Snow

    • 31
    • 43

    Mostly Cloudy

Today 22 Dec Jackson County

Mostly cloudy then becoming partly cloudy early this afternoon then becoming mostly cloudy. Patchy dense fog early this morning. Slight chance of rain this morning. Highs in the mid 40s. Southeast Winds around 5 Mph shifting to the southwest this afternoon.

Tonight 22 Dec Jackson County

Mostly cloudy. Patchy dense fog through the night. A 30 percent chance of rain after midnight. Snow level 3500 feet. Lows in the lower to mid 30s. Southwest Winds around 5 Mph shifting to the southeast late in the evening and overnight.

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Siskiyou Mountain Park Temperature Statistics

December Temperature

Montague Siskiyou County Airport (28.6 miles)

  • Lowest 14 December, 2025

    21 °F

  • Average December

    38 °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

    54.2 °F

  • Average High 2020–2025

    68.9 °F
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