Rainbow Lake Weather Forecast

    • 72
    • 88

    Sunny

    • 72
    • 92

    Sunny

    • 71
    • 89

    Partly Sunny

    • 68
    • 79

    Partly Sunny

    • 68
    • 81

    Mostly Sunny

    • 69
    • 86

    Mostly Sunny

Today 16 Sep Mountains Southwestern Shasta County to Western Colusa County

Sunny. Highs 72 to 87 higher Elevations. 88 to 94 lower Elevations. Prevailing north Winds up to 10 Mph shifting to the southeast in the afternoon.

Tonight 16 Sep Mountains Southwestern Shasta County to Western Colusa County

Clear. Lows 56 to 70 higher Elevations. 65 to 73 lower Elevations. Prevailing south Winds up to 10 Mph shifting to the west after midnight.

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Rainbow Lake Temperature Statistics

September Temperature

Weaverville (19.9 miles)

  • Lowest 1 September, 2025

    51.8 °F

  • Average September

    70.6 °F

  • Highest 1 September, 2025

    96.8 °F

Climate (2023–Present)

Weaverville (19.9 miles)

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  • Average Low 2023–2025

    43 °F

  • Average 2023–2025

    57.2 °F

  • Average High 2023–2025

    71.2 °F
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