Castalia Weather Forecast

    • 47
    • 74

    Chance Rain Showers

    • 48
    • 69

    Sunny

    • 51
    • 82

    Chance Rain Showers

    • 40
    • 66

    Sunny

    • 40
    • 69

    Mostly Sunny

    • 42
    • 71

    Sunny

    • 47
    • 73

    Sunny

Today 3 Oct Winneshiek

Mostly sunny. Highs in the lower 70s. Northeast Winds 5 to 10 Mph.

Tonight 3 Oct Winneshiek

Mostly cloudy with a 50 percent chance of Showers. Lows in the mid 40s. North Winds 5 to 10 Mph.

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Castalia Temperature Statistics

October Temperature

Decorah (11.8 miles)

  • Lowest

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  • Average October

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  • Highest

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Climate (2019–Present)

Decorah (11.8 miles)

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  • Average Low 2019–2024

    39.1 °F

  • Average 2019–2024

    47.6 °F

  • Average High 2019–2024

    55.9 °F
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