Lewiston Weather Forecast

    • 49
    • 84

    Sunny

    • 48
    • 87

    Sunny

    • 48
    • 78

    Sunny

    • 49
    • 78

    Sunny

    • 50
    • 86

    Sunny

    • 51
    • 88

    Mostly Sunny

Today 14 Sep Northwestern and Central Trinity

Sunny. Highs 77 to 92. North wind up to 10 Mph.

Tonight 14 Sep Northwestern and Central Trinity

Clear. Lows 46 to 56. Northwest wind around 10 Mph shifting to the north overnight.

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Lewiston Temperature Statistics

September Temperature

Weaverville (6.2 miles)

  • Lowest 4 September, 2026

    39.2 °F

  • Average September

    65 °F

  • Highest 9 September, 2026

    96.8 °F

Climate (2023–2026)

Weaverville (6.2 miles)

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  • Average Low 2023–2026

    43.4 °F

  • Average 2023–2026

    57.6 °F

  • Average High 2023–2026

    71.4 °F
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