Grinnell Regional Airport Weather Forecast
- 53
- 77
Increasing Clouds
- 51
- 76
Mostly Cloudy
- 51
- 70
Mostly Cloudy
- 53
- 70
Chance Rain Showers
- 48
- 72
Slight Chance Rain Showers
- 49
- 69
Chance Rain Showers
Today 24 Oct Poweshiek
Mostly sunny. Highs in the upper 70s. South Winds around 10 Mph with Gusts up to 20 Mph.
Tonight 24 Oct Poweshiek
Partly cloudy. Lows in the lower 50s. South Winds around 5 Mph.
Grinnell Regional Airport Temperature Statistics
October Temperature
Newton Municipal Airport - Earl Johnson Field (14.9 miles)
Lowest 17 October, 2026
32 °FAverage October
60.8 °FHighest 11 October, 2026
87.8 °F
Climate (2021–2026)
Newton Municipal Airport - Earl Johnson Field (14.9 miles)
Average Low 2021–2026
41.5 °FAverage 2021–2026
51.3 °FAverage High 2021–2026
61.3 °F