Ossian Weather Forecast

    • 37
    • 52

    Mostly Cloudy

    • 49
    • 66

    Mostly Cloudy

    • 27
    • 64

    Mostly Cloudy

    • 24
    • 43

    Mostly Sunny

    • 36
    • 52

    Partly Sunny

    • 39
    • 58

    Partly Sunny

Today 24 Mar Winneshiek

Partly sunny this Morning, then becoming mostly cloudy. Highs in the lower 50s. South Winds 5 to 10 Mph.

Tonight 24 Mar Winneshiek

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the upper 30s. South Winds 5 to 10 Mph.

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Ossian Temperature Statistics

March Temperature

Decorah (9.3 miles)

  • Lowest 16 March, 2026

    8.6 °F

  • Average March

    39 °F

  • Highest 21 March, 2026

    80.6 °F

Climate (2021–Present)

Decorah (9.3 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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