Grimes Weather Forecast

    • 12
    • 19

    Blowing Snow

    • 24
    • 35

    Partly Sunny

    • 15
    • 33

    Mostly Cloudy

    • 16
    • 25

    Partly Sunny

    • 19
    • 32

    Partly Sunny

    • 17
    • 33

    Partly Sunny

Today 29 Dec Polk

Mostly sunny and windy. Much cooler with Highs around 19. Northwest Winds 20 to 30 Mph with Gusts up to 45 Mph, Diminishing to 15 to 20 Mph with Gusts up to 35 Mph in the afternoon.

Tonight 29 Dec Polk

Partly cloudy in the Evening, then becoming mostly clear. Lows around 12. Northwest Winds 10 to 15 Mph, becoming west around 5 Mph after midnight.

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Grimes Temperature Statistics

December Temperature

Ankeny Regional Airport (10.6 miles)

  • Lowest 14 December, 2025

    -5.8 °F

  • Average December

    26.9 °F

  • Highest 22 December, 2025

    53.6 °F

Climate (2020–Present)

Ankeny Regional Airport (10.6 miles)

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  • Average Low 2020–2025

    41.2 °F

  • Average 2020–2025

    51.8 °F

  • Average High 2020–2025

    61.9 °F
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