Castle Crags State Park Weather Forecast

    • 40
    • 60

    Mostly Cloudy

    • 37
    • 62

    Mostly Sunny

    • 31
    • 57

    Sunny

    • 31
    • 54

    Mostly Sunny

    • 34
    • 54

    Mostly Cloudy

    • 35
    • 55

    Partly Sunny

    • 39
    • 58

    Mostly Cloudy

Today 21 Jan Shasta Lake Area / Northern Shasta County

Mostly cloudy. Warmer. Highs 48 to 62 higher Elevations. 58 to 64 lower Elevations. Light Winds.

Tonight 21 Jan Shasta Lake Area / Northern Shasta County

Mostly cloudy. Colder. Lows 33 to 48 higher Elevations. 42 to 50 lower Elevations. Light Winds.

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Castle Crags State Park Temperature Statistics

January Temperature

Mount Shasta (10.6 miles)

  • Lowest 9 January, 2026

    21 °F

  • Average January

    37.5 °F

  • Highest 15 January, 2026

    57.9 °F

Climate (2021–Present)

Mount Shasta (10.6 miles)

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  • Average Low 2021–2026

    39.6 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    65.6 °F
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