Grimes Weather Forecast

    • 54
    • 76

    Chance Rain Showers

    • 48
    • 68

    Rain Showers

    • 51
    • 65

    Rain Showers

    • 52
    • 63

    Chance Rain Showers

    • 52
    • 64

    Rain Showers Likely

    • 49
    • 65

    Rain Showers Likely

Today 28 Oct Polk

Mostly sunny. Highs in the mid 70s. South Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 28 Oct Polk

Mostly cloudy with a chance of Showers with a slight chance of Thunderstorms. Lows in the mid 50s. South Winds 10 to 15 Mph with Gusts up to 25 Mph, becoming west 5 to 10 Mph after midnight. Chance of rain 40 percent.

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Grimes Temperature Statistics

October Temperature

Ankeny Regional Airport (10.6 miles)

  • Lowest 17 October, 2026

    32 °F

  • Average October

    60.6 °F

  • Highest 11 October, 2026

    87.8 °F

Climate (2021–2026)

Ankeny Regional Airport (10.6 miles)

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  • Average Low 2021–2026

    41.5 °F

  • Average 2021–2026

    52.2 °F

  • Average High 2021–2026

    62.3 °F
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