Grinnell Weather Forecast

    • 39
    • 64

    Chance Rain Showers

    • 37
    • 57

    Mostly Cloudy

    • 40
    • 54

    Rain Showers

    • 35
    • 53

    Chance Rain Showers

    • 31
    • 51

    Partly Sunny

    • 34
    • 54

    Mostly Sunny

Today 29 Mar Poweshiek

Partly sunny in the Morning, then mostly cloudy with a slight chance of rain Showers in the afternoon. Highs in the mid 60s. Southeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 20 percent.

Tonight 29 Mar Poweshiek

Mostly cloudy with a chance of Showers. Lows around 40. Southeast Winds 5 to 10 Mph, becoming west 10 to 15 Mph after midnight. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grinnell Temperature Statistics

March Temperature

Newton Municipal Airport - Earl Johnson Field (15.5 miles)

  • Lowest 18 March, 2024

    19.4 °F
  • Average March

    42.8 °F
  • Highest 3 March, 2024

    78.8 °F

Climate (2019–Present)

Newton Municipal Airport - Earl Johnson Field (15.5 miles)

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  • Average Low 2019–2024

    41.2 °F
  • Average 2019–2024

    50.7 °F
  • Average High 2019–2024

    60.4 °F
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