Siskiyou Mountain Park Weather Forecast

    • 42
    • 73

    Mostly Sunny

    • 42
    • 69

    Partly Sunny

    • 39
    • 59

    Partly Sunny

    • 37
    • 63

    Mostly Sunny

    • 42
    • 72

    Sunny

    • 46
    • 78

    Sunny

Today 14 May Jackson County

Sunny. Highs in the mid 70s to lower 80s in the Valleys and in the mid 60s to lower 70s at higher Elevations. East Winds around 5 Mph shifting to the northwest in the late morning and afternoon.

Tonight 14 May Jackson County

Mostly clear in the evening then becoming partly cloudy. Lows around 40. Northwest Winds 10 to 15 Mph decreasing to around 5 Mph well after midnight.

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Siskiyou Mountain Park Temperature Statistics

May Temperature

Montague Siskiyou County Airport (28.6 miles)

  • Lowest 9 May, 2026

    36.6 °F

  • Average May

    62.9 °F

  • Highest 11 May, 2026

    88 °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

    54.3 °F

  • Average High 2021–2026

    69.2 °F
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