Siskiyou Mountain Park Weather Forecast

    • 44
    • 56

    Mostly Sunny

    • 39
    • 54

    Sunny

    • 40
    • 56

    Mostly Sunny

    • 37
    • 51

    Mostly Cloudy

    • 37
    • 53

    Partly Sunny

    • 41
    • 56

    Mostly Cloudy

Today 22 Jan Jackson County

Sunny in the morning then becoming partly cloudy. Patchy fog in the morning. Highs in the mid 40s to mid 50s. East Winds around 5 Mph early in the morning becoming Light, then becoming west around 5 Mph in the afternoon.

Tonight 22 Jan Jackson County

Partly cloudy. Patchy fog after midnight. Lows in the mid 20s to lower 30s in the Valleys and in the lower 30s to lower 40s at higher Elevations. Northwest Winds around 5 Mph.

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Siskiyou Mountain Park Temperature Statistics

January Temperature

Montague Siskiyou County Airport (28.6 miles)

  • Lowest 13 January, 2026

    18 °F

  • Average January

    34.9 °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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