Ossian Weather Forecast

    • 26
    • 46

    Becoming Sunny

    • 36
    • 48

    Partly Sunny

    • 40
    • 55

    Mostly Cloudy

    • 44
    • 59

    Mostly Cloudy

    • 26
    • 58

    Partly Sunny

    • 26
    • 41

    Mostly Sunny

Today 22 Mar Winneshiek

Mostly cloudy this Morning, then becoming mostly sunny. Much cooler with Highs in the upper 40s. North Winds 10 to 15 Mph.

Tonight 22 Mar Winneshiek

Partly cloudy in the Evening, then becoming mostly clear. Colder with Lows in the mid 20s. North Winds 10 to 15 Mph.

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Ossian Temperature Statistics

March Temperature

Decorah (9.3 miles)

  • Lowest 16 March, 2026

    8.6 °F

  • Average March

    36.6 °F

  • Highest 9 March, 2026

    68 °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

    56.7 °F
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