Grinnell Regional Airport Weather Forecast

    • 54
    • 75

    Increasing Clouds

    • 46
    • 79

    Rain Showers

    • 26
    • 52

    Slight Chance Snow

    • 31
    • 49

    Mostly Sunny

    • 46
    • 64

    Mostly Sunny

    • 39
    • 76

    Chance Rain

    • 27
    • 51

    Rain/Snow Likely

Today 13 Mar Poweshiek

Sunny. Highs in the lower 70s. Southeast Winds around 10 Mph.

Tonight 13 Mar Poweshiek

Sunny, then becoming mostly clear this Evening, then becoming mostly cloudy. Not as cool with Lows in the mid 50s. Southeast Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grinnell Regional Airport Temperature Statistics

March Temperature

Newton Municipal Airport - Earl Johnson Field (14.9 miles)

  • Lowest 2 March, 2025

    14 °F

  • Average March

    39.3 °F

  • Highest 10 March, 2025

    77 °F

Climate (2020–Present)

Newton Municipal Airport - Earl Johnson Field (14.9 miles)

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  • Average Low 2020–2025

    41.2 °F

  • Average 2020–2025

    50.9 °F

  • Average High 2020–2025

    60.7 °F
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