Grinnell Weather Forecast

    • 37
    • 55

    Decreasing Clouds

    • 54
    • 60

    Rain Showers Likely

    • 60
    • 70

    Rain Showers Likely

    • 62
    • 80

    Chance Rain Showers

    • 52
    • 79

    Rain Showers Likely

    • 47
    • 69

    Chance Rain Showers

Today 10 Apr Poweshiek

Mostly sunny. Highs in the mid 50s. North Winds 5 to 10 Mph.

Tonight 10 Apr Poweshiek

Mostly clear. Lows in the upper 30s. Northeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grinnell Temperature Statistics

April Temperature

Newton Municipal Airport - Earl Johnson Field (15.5 miles)

  • Lowest 7 April, 2026

    32 °F

  • Average April

    43 °F

  • Highest 2 April, 2026

    64.4 °F

Climate (2021–Present)

Newton Municipal Airport - Earl Johnson Field (15.5 miles)

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  • Average Low 2021–2026

    41.6 °F

  • Average 2021–2026

    51.4 °F

  • Average High 2021–2026

    61.5 °F
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