Ossian Weather Forecast

    • 42
    • 78

    Increasing Clouds

    • 26
    • 47

    Partly Sunny

    • 36
    • 47

    Partly Sunny

    • 37
    • 56

    Mostly Cloudy

    • 43
    • 54

    Mostly Cloudy

    • 26
    • 55

    Mostly Cloudy

Today 21 Mar Winneshiek

Mostly sunny. Warmer with Highs in the upper 70s. South Winds 5 to 10 Mph, becoming west 10 to 15 Mph this afternoon.

Tonight 21 Mar Winneshiek

Partly cloudy. Lows in the lower 40s. West Winds 5 to 10 Mph, becoming north 10 to 15 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Ossian Temperature Statistics

March Temperature

Decorah (9.3 miles)

  • Lowest 16 March, 2026

    8.6 °F

  • Average March

    36 °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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