Castella Weather Forecast

    • 43
    • 70

    Slight Chance Rain

    • 47
    • 75

    Mostly Sunny

    • 43
    • 73

    Chance Rain

    • 50
    • 81

    Mostly Sunny

    • 54
    • 82

    Partly Sunny

    • 55
    • 83

    Mostly Sunny

Today 4 Sep Shasta Lake Area and Interstate 5 Between 1000-3000 ft

Patchy fog in the morning. Mostly sunny. Warmer. Highs 63 to 73. Light Winds becoming south up to 10 Mph in the afternoon.

Tonight 4 Sep Shasta Lake Area and Interstate 5 Between 1000-3000 ft

Mostly clear. Lows 42 to 52. Light Winds.

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Castella Temperature Statistics

September Temperature

Trinity Center (21.7 miles)

  • Lowest 1 September, 2026

    53.6 °F

  • Average September

    58.4 °F

  • Highest 1 September, 2026

    68 °F

Climate (2021–2026)

Trinity Center (21.7 miles)

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  • Average Low 2021–2026

    42.8 °F

  • Average 2021–2026

    55.5 °F

  • Average High 2021–2026

    68.8 °F
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