Castle Crags State Park Weather Forecast

    • 59
    • 94

    Mostly Sunny

    • 60
    • 94

    Mostly Cloudy

    • 58
    • 84

    Slight Chance Rain Showers

    • 57
    • 86

    Mostly Sunny

    • 57
    • 88

    Mostly Sunny

    • 58
    • 92

    Partly Sunny

    • 56
    • 85

    Chance Rain Showers

Today 17 Sep Shasta Lake Area / Northern Shasta County

Sunny. Highs 79 to 94 higher Elevations. 90 to 98 lower Elevations. Light Winds.

Tonight 17 Sep Shasta Lake Area / Northern Shasta County

Clear. Lows 52 to 67 higher Elevations. 60 to 72 lower Elevations. Light Winds becoming north up to 10 Mph after midnight.

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Castle Crags State Park Temperature Statistics

September Temperature

Mount Shasta (10.6 miles)

  • Lowest 15 September, 2025

    44.1 °F

  • Average September

    63.1 °F

  • Highest 1 September, 2025

    90 °F

Climate (2020–Present)

Mount Shasta (10.6 miles)

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  • Average Low 2020–2025

    39.5 °F

  • Average 2020–2025

    52.4 °F

  • Average High 2020–2025

    65.7 °F
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