Grinnell Regional Airport Weather Forecast

    • 30
    • 48

    Gradual Clearing

    • 34
    • 57

    Mostly Sunny

    • 41
    • 58

    Partly Sunny

    • 43
    • 55

    Rain Likely

    • 28
    • 51

    Mostly Cloudy

    • 21
    • 38

    Partly Sunny

Today 21 Nov Poweshiek

Mostly cloudy. A slight chance of rain this afternoon. Highs in the upper 40s. Northeast Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 21 Nov Poweshiek

Mostly cloudy in the Evening, then clearing. Lows around 30. North Winds around 5 Mph.

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Grinnell Regional Airport Temperature Statistics

November Temperature

Newton Municipal Airport - Earl Johnson Field (14.9 miles)

  • Lowest 10 November, 2025

    21.2 °F

  • Average November

    45.4 °F

  • Highest 14 November, 2025

    75.2 °F

Climate (2020–Present)

Newton Municipal Airport - Earl Johnson Field (14.9 miles)

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  • Average Low 2020–2025

    41.6 °F

  • Average 2020–2025

    51.3 °F

  • Average High 2020–2025

    61.2 °F
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