Castle Crags State Park Weather Forecast

    • 41
    • 51

    Rain Showers

    • 42
    • 50

    Rain Showers

    • 39
    • 51

    Rain/Snow

    • 34
    • 46

    Rain Showers

    • 28
    • 44

    Rain Showers Likely

    • 30
    • 46

    Mostly Cloudy

    • 33
    • 52

    Mostly Cloudy

Today 22 Dec Shasta Lake Area / Northern Shasta County

A chance of rain Showers in the Morning, then rain Showers likely early in the afternoon. A chance of rain Showers late in the afternoon. Highs 39 to 53 higher Elevations. 50 to 56 lower Elevations. Prevailing southwest Winds up to 10 Mph with Gusts to around 25 Mph.

Tonight 22 Dec Shasta Lake Area / Northern Shasta County

A chance of rain early in the Evening, then rain likely late in the evening. A chance of rain after Midnight, then rain late in the night. In the Valleys, patchy fog after midnight. Lows 34 to 48. 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

    41.6 °F

  • Highest 13 December, 2025

    64 °F

Climate (2020–Present)

Mount Shasta (10.6 miles)

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  • Average Low 2020–2025

    39.6 °F

  • Average 2020–2025

    52.4 °F

  • Average High 2020–2025

    65.6 °F
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