Ossian Weather Forecast

    • 61
    • 71

    Rain Showers

    • 60
    • 77

    Partly Sunny

    • 58
    • 77

    Mostly Sunny

    • 61
    • 79

    Mostly Sunny

    • 62
    • 81

    Chance Thunderstorms

    • 60
    • 76

    Chance Rain Showers

Today 31 Jul Winneshiek

A chance of Thunderstorms. Showers. Locally heavy rainfall possible this morning. Cooler with Highs in the lower 70s. East Winds 10 to 20 Mph. Gusts up to 30 Mph this afternoon. Chance of rain 100 percent.

Tonight 31 Jul Winneshiek

Showers with a chance of Thunderstorms in the Evening, then Showers likely after midnight. Humid with Lows in the lower 60s. Northeast Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 90 percent.

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Ossian Temperature Statistics

July Temperature

Decorah (9.3 miles)

  • Lowest 6 July, 2026

    62.6 °F

  • Average July

    74 °F

  • Highest 7 July, 2026

    86 °F

Climate (2021–2026)

Decorah (9.3 miles)

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  • Average Low 2021–2026

    39.2 °F

  • Average 2021–2026

    47.9 °F

  • Average High 2021–2026

    56.5 °F
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