Siskiyou Mountain Park Weather Forecast

    • 58
    • 86

    Mostly Sunny

    • 57
    • 87

    Partly Sunny

    • 57
    • 89

    Mostly Sunny

    • 60
    • 89

    Partly Sunny

    • 58
    • 89

    Partly Sunny

    • 56
    • 85

    Mostly Sunny

Today 13 Aug Jackson County

Sunny. Highs in the mid 80s to lower 90s in the Valleys and in the mid 70s to lower 80s at higher Elevations. Northwest Winds 5 to 10 Mph.

Tonight 13 Aug Jackson County

Clear. Lows in the lower to mid 50s. Northwest Winds 5 to 10 Mph until well after midnight becoming light.

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Siskiyou Mountain Park Temperature Statistics

August Temperature

Montague Siskiyou County Airport (28.6 miles)

  • Lowest 3 August, 2026

    51.7 °F

  • Average August

    77.2 °F

  • Highest 7 August, 2026

    104.6 °F

Climate (2021–2026)

Montague Siskiyou County Airport (28.6 miles)

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  • Average Low 2021–2026

    39.4 °F

  • Average 2021–2026

    54 °F

  • Average High 2021–2026

    69.1 °F
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