Decorah Municipal Airport Weather Forecast

    • 35
    • 47

    Increasing Clouds

    • 37
    • 60

    Partly Sunny

    • 46
    • 66

    Partly Sunny

    • 45
    • 72

    Partly Sunny

    • 39
    • 61

    Mostly Sunny

    • 47
    • 66

    Partly Sunny

    • 48
    • 71

    Partly Sunny

Today 6 May Winneshiek

Mostly cloudy. Near steady temperature around 50. Northwest Winds 10 to 15 Mph.

Tonight 6 May Winneshiek

Partly cloudy this Evening, then becoming mostly cloudy. Areas of frost after midnight. Lows in the lower 30s. Northwest Winds 5 to 10 Mph, becoming southwest after midnight.

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Decorah Municipal Airport Temperature Statistics

May Temperature

Decorah (0 miles)

  • Lowest 2 May, 2026

    32 °F

  • Average May

    54.3 °F

  • Highest 4 May, 2026

    75.2 °F

Climate (2021–Present)

Decorah (0 miles)

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  • Average Low 2021–2026

    39.5 °F

  • Average 2021–2026

    48.2 °F

  • Average High 2021–2026

    56.8 °F
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