Mount Shasta City Park Weather Forecast

    • 36
    • 62

    Becoming Sunny

    • 34
    • 61

    Mostly Sunny

    • 34
    • 61

    Mostly Sunny

    • 33
    • 61

    Mostly Sunny

    • 36
    • 56

    Mostly Cloudy

    • 37
    • 50

    Rain Likely

Today 10 Dec South Central Siskiyou County

Sunny. Patchy fog early this morning. Highs in the mid 50s to mid 60s. North Winds around 5 Mph.

Tonight 10 Dec South Central Siskiyou County

Mostly clear. Lows in the lower 30s to lower 40s. North Winds around 5 Mph.

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Mount Shasta City Park Temperature Statistics

December Temperature

Mount Shasta (0.6 miles)

  • Lowest 1 December, 2025

    27 °F

  • Average December

    40.2 °F

  • Highest 8 December, 2025

    59 °F

Climate (2020–Present)

Mount Shasta (0.6 miles)

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  • Average Low 2020–2025

    39.5 °F

  • Average 2020–2025

    52.3 °F

  • Average High 2020–2025

    65.5 °F
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