Siskiyou Mountain Park Weather Forecast

    • 45
    • 62

    Dense Fog

    • 42
    • 58

    Patchy Fog

    • 43
    • 58

    Mostly Sunny

    • 42
    • 58

    Patchy Fog

    • 44
    • 58

    Patchy Fog

    • 41
    • 58

    Patchy Fog

Today 15 Jan Jackson County

Sunny. Patchy dense fog and dense freezing fog in the morning. Highs in the mid 40s to lower 50s in the Valleys and in the mid 50s to mid 60s at higher Elevations. Northeast Winds around 5 Mph.

Tonight 15 Jan Jackson County

Clear. Patchy fog through the night. Patchy freezing fog after midnight. Lows in the mid 20s to mid 30s in the Valleys and in the mid 30s to mid 40s at higher Elevations. East Winds 5 to 10 Mph.

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Siskiyou Mountain Park Temperature Statistics

January Temperature

Montague Siskiyou County Airport (28.6 miles)

  • Lowest 9 January, 2026

    19.9 °F

  • Average January

    37 °F

  • Highest 2 January, 2026

    54 °F

Climate (2021–Present)

Montague Siskiyou County Airport (28.6 miles)

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  • Average Low 2021–2026

    39.7 °F

  • Average 2021–2026

    54.2 °F

  • Average High 2021–2026

    69 °F
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