Ossian Weather Forecast
- 70
- 90
Slight Chance Thunderstorms
- 72
- 90
Partly Sunny
- 65
- 87
Mostly Sunny
- 67
- 85
Partly Sunny
- 65
- 86
Mostly Sunny
- 59
- 80
Partly Sunny
Today 16 Jul Winneshiek
Mostly sunny. Patchy fog in the morning. Areas of smoke. A slight chance of Showers and Thunderstorms in the afternoon. Hot with Highs around 90. Light and variable Winds, becoming southwest around 5 Mph in the afternoon. Chance of rain 20 percent. Heat index Values up to 100.
Tonight 16 Jul Winneshiek
Partly cloudy. Patchy fog. Lows in the lower 70s. Light and variable Winds.
Ossian Temperature Statistics
July Temperature
Decorah (9.3 miles)
Lowest 6 July, 2026
62.6 °FAverage July
74 °FHighest 7 July, 2026
86 °F
Climate (2021–2026)
Decorah (9.3 miles)
Average Low 2021–2026
39.4 °FAverage 2021–2026
48.1 °FAverage High 2021–2026
56.7 °F