Castle Crags State Park Weather Forecast

    • 41
    • 61

    Chance Rain Showers

    • 39
    • 60

    Slight Chance Rain Showers

    • 41
    • 59

    Partly Sunny

    • 44
    • 63

    Mostly Cloudy

    • 44
    • 64

    Chance Rain Showers

    • 44
    • 66

    Slight Chance Rain Showers

    • 45
    • 68

    Mostly Sunny

Today 5 Dec Shasta Lake Area / Northern Shasta County

Mostly sunny in the morning then becoming partly cloudy. Widespread frost early in the morning. At higher Elevations, a slight chance of rain Showers early in the afternoon. Highs 49 to 64 higher Elevations. 60 to 68 lower Elevations. Prevailing north Winds up to 10 Mph.

Tonight 5 Dec Shasta Lake Area / Northern Shasta County

Partly cloudy with a slight chance of rain Showers. Patchy fog in the late evening and early morning. Widespread fog. Locally dense late in the night. Lows 34 to 46. Light Winds.

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Castle Crags State Park Temperature Statistics

December Temperature

Mount Shasta (10.6 miles)

  • Lowest 1 December, 2025

    27 °F

  • Average December

    37.2 °F

  • Highest 1 December, 2025

    51.1 °F

Climate (2020–Present)

Mount Shasta (10.6 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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