Castella Weather Forecast

    • 42
    • 62

    Partly Sunny

    • 44
    • 64

    Chance Rain Showers

    • 44
    • 68

    Chance Rain Showers

    • 44
    • 69

    Mostly Sunny

    • 44
    • 70

    Mostly Sunny

    • 42
    • 67

    Mostly Sunny

Today 8 Dec Shasta Lake Area / Northern Shasta County

Partly cloudy in the morning then clearing. Highs 48 to 63 higher Elevations. 59 to 65 lower Elevations. Light Winds.

Tonight 8 Dec Shasta Lake Area / Northern Shasta County

Partly cloudy. Lows 34 to 49. Light Winds.

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Castella Temperature Statistics

December Temperature

Trinity Center (21.7 miles)

  • Lowest 1 December, 2025

    30.2 °F

  • Average December

    40.7 °F

  • Highest 1 December, 2025

    55.4 °F

Climate (2021–Present)

Trinity Center (21.7 miles)

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  • Average Low 2021–2025

    42.2 °F

  • Average 2021–2025

    54.9 °F

  • Average High 2021–2025

    68.2 °F
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