Mount Shasta Weather Forecast

    • 49
    • 83

    Partly Sunny

    • 50
    • 81

    Mostly Sunny

    • 53
    • 85

    Mostly Sunny

    • 54
    • 86

    Mostly Sunny

    • 55
    • 87

    Partly Sunny

    • 57
    • 90

    Mostly Sunny

    • 59
    • 93

    Mostly Sunny

Today 3 Aug South Central Siskiyou County

Sunny with a 10 percent chance of Thunderstorms. Highs in the mid 70s to mid 80s. Southwest Winds 5 to 10 Mph.

Tonight 3 Aug South Central Siskiyou County

Mostly clear with a 10 percent chance of Thunderstorms early this Evening, then mostly clear late this evening and overnight. Patchy fog well after midnight. Lows in the lower 40s to lower 50s. Northwest Winds 5 to 10 Mph shifting to the north after midnight.

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Mount Shasta Temperature Statistics

August Temperature

Mount Shasta (0 miles)

  • Lowest 1 August, 2025

    46.9 °F

  • Average August

    66.7 °F

  • Highest 1 August, 2025

    87.1 °F

Climate (2020–Present)

Mount Shasta (0 miles)

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  • Average Low 2020–2025

    39.5 °F

  • Average 2020–2025

    52.5 °F

  • Average High 2020–2025

    65.7 °F
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