Castalia Weather Forecast

    • 26
    • 40

    Increasing Clouds

    • 33
    • 51

    Partly Sunny

    • 26
    • 48

    Partly Sunny

    • 29
    • 48

    Partly Sunny

    • 26
    • 49

    Mostly Sunny

    • 21
    • 44

    Partly Sunny

Today 9 Dec Nash

Partly sunny. Highs around 40. North Winds around 5 Mph, becoming west around 5 Mph in the afternoon.

Tonight 9 Dec Nash

Partly cloudy. Cold with Lows in the mid 20s. Southwest Winds 5 to 10 Mph.

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Castalia Temperature Statistics

December Temperature

Franklin County Airport (15.5 miles)

  • Lowest 3 December, 2025

    26.6 °F

  • Average December

    36.4 °F

  • Highest 4 December, 2025

    50 °F

Climate (2020–Present)

Franklin County Airport (15.5 miles)

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  • Average Low 2020–2025

    49 °F

  • Average 2020–2025

    59.3 °F

  • Average High 2020–2025

    70.3 °F
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