Mount Shasta Peak Weather Forecast

    • 25
    • 39

    Slight Chance Snow Showers

    • 25
    • 33

    Chance Snow Showers

    • 26
    • 34

    Slight Chance Thunderstorms

    • 29
    • 39

    Sunny

    • 32
    • 41

    Mostly Sunny

    • 32
    • 43

    Mostly Sunny

Today 15 Sep North Central and Southeast Siskiyou County

Sunny. Highs in the lower 70s to lower 80s. Northeast Winds around 5 Mph shifting to the west in the afternoon.

Tonight 15 Sep North Central and Southeast Siskiyou County

Mostly clear in the Evening, then partly cloudy with a 20 percent chance of Showers after midnight. Lows in the lower to mid 40s. Northwest Winds 5 to 10 Mph shifting to the north well after midnight.

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Mount Shasta Peak Temperature Statistics

September Temperature

Mount Shasta (8.7 miles)

  • Lowest 4 September, 2026

    33.7 °F

  • Average September

    58.3 °F

  • Highest 9 September, 2026

    90.6 °F

Climate (2021–2026)

Mount Shasta (8.7 miles)

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  • Average Low 2021–2026

    39.5 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    65.7 °F
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