Grinnell Weather Forecast
- 73
- 96
Chance Thunderstorms
- 70
- 89
Rain Showers Likely
- 69
- 86
Chance Thunderstorms
- 64
- 82
Chance Rain Showers
- 64
- 82
Mostly Sunny
- 66
- 87
Chance Rain Showers
Today 5 Jul Poweshiek
Sunny. Hot and humid. High in the mid 90s. Southwest wind 5 to 10 Mph. Heat index Readings 102 to 107.
Tonight 5 Jul Poweshiek
Partly cloudy in the evening then becoming mostly cloudy. A 50 percent chance of Thunderstorms. Low in the lower 70s. Southwest wind 5 to 10 Mph shifting to the northeast after midnight. Highest heat index Readings 102 to 107 through midnight.
Grinnell Temperature Statistics
July Temperature
Newton Municipal Airport - Earl Johnson Field (15.5 miles)
Lowest 2 July, 2022
57.2 °FAverage July
73 °FHighest 3 July, 2022
86 °F
Climate (2010–Present)
Newton Municipal Airport - Earl Johnson Field (15.5 miles)
Average Low 2010–Present
40.6 °FAverage 2010–Present
49.9 °FAverage High 2010–Present
59.3 °F