Grinnell Regional Airport Weather Forecast

    • 58
    • 86

    Increasing Clouds

    • 62
    • 88

    Mostly Sunny

    • 59
    • 83

    Partly Sunny

    • 57
    • 81

    Mostly Cloudy

    • 55
    • 79

    Partly Sunny

    • 54
    • 79

    Mostly Sunny

Today 26 May Poweshiek

Mostly sunny. Highs in the upper 80s. South Winds around 5 Mph.

Tonight 26 May Poweshiek

Partly cloudy. Lows in the upper 50s. Southeast Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Grinnell Regional Airport Temperature Statistics

May Temperature

Newton Municipal Airport - Earl Johnson Field (14.9 miles)

  • Lowest 1 May, 2026

    35.6 °F

  • Average May

    60.8 °F

  • Highest 15 May, 2026

    87.8 °F

Climate (2021–Present)

Newton Municipal Airport - Earl Johnson Field (14.9 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    41.6 °F

  • Average 2021–2026

    51.5 °F

  • Average High 2021–2026

    61.6 °F
Get WillyWeather+ to remove ads