Donnellson Weather Forecast
- 75
- 90
Partly Sunny
- 75
- 94
Mostly Sunny
- 72
- 91
Chance Thunderstorms
- 71
- 85
Chance Thunderstorms
- 73
- 89
Slight Chance Thunderstorms
- 74
- 92
Mostly Sunny
- 74
- 94
Slight Chance Thunderstorms
Today 22 Jul Lee
Mostly sunny. A slight chance of Showers and Thunderstorms this afternoon. Hot with Highs around 90. Southeast Winds around 10 Mph. Chance of rain 20 percent. Heat index Values up to 101.
Tonight 22 Jul Lee
Partly cloudy. A slight chance of Showers and Thunderstorms this evening. Humid with Lows in the mid 70s. Southeast Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 102 early this evening.
Donnellson Temperature Statistics
July Temperature
Fort Madison Municipal Airport (12.4 miles)
Lowest 1 July, 2025
64.4 °FAverage July
76.4 °FHighest 11 July, 2025
91.4 °F
Climate (2020–Present)
Fort Madison Municipal Airport (12.4 miles)
Average Low 2020–2025
45.4 °FAverage 2020–2025
54.7 °FAverage High 2020–2025
64.2 °F