Ossian Weather Forecast

    • 56
    • 75

    Increasing Clouds

    • 57
    • 75

    Partly Sunny

    • 66
    • 79

    Mostly Cloudy

    • 73
    • 88

    Partly Sunny

    • 74
    • 91

    Partly Sunny

    • 72
    • 91

    Chance Thunderstorms

Today 25 Jun Winneshiek

Mostly sunny. Highs in the mid 70s. Northwest Winds 5 to 10 Mph.

Tonight 25 Jun Winneshiek

Mostly clear. Lows in the mid 50s. Light Winds.

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Ossian Temperature Statistics

June Temperature

Decorah (9.3 miles)

  • Lowest 19 June, 2026

    50 °F

  • Average June

    67.3 °F

  • Highest 4 June, 2026

    82.4 °F

Climate (2021–2026)

Decorah (9.3 miles)

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  • Average Low 2021–2026

    39.4 °F

  • Average 2021–2026

    48.1 °F

  • Average High 2021–2026

    56.8 °F
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