Grimes Weather Forecast

    • 73
    • 89

    Chance Thunderstorms

    • 73
    • 92

    Chance Thunderstorms

    • 62
    • 84

    Chance Thunderstorms

    • 64
    • 83

    Chance Thunderstorms

    • 67
    • 85

    Chance Thunderstorms

    • 67
    • 83

    Chance Thunderstorms

Today 8 Aug Polk

Mostly sunny. Hot and humid. High in the upper 80s. South wind 5 to 15 Mph. Highest heat index Readings 100 to 102 in the afternoon.

Tonight 8 Aug Polk

Partly cloudy. A 40 percent chance of Thunderstorms after midnight. Low in the lower 70s. South wind 5 to 10 Mph. Highest heat index Readings 100 to 102 through midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grimes Temperature Statistics

August Temperature

Ankeny Regional Airport (10.6 miles)

  • Lowest 4 August, 2020

    48.2 °F
  • Average August

    66.9 °F
  • Highest 1 August, 2020

    82.4 °F

Climate (2010–Present)

Ankeny Regional Airport (10.6 miles)

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  • Average Low 2010–Present

    41.2 °F
  • Average 2010–Present

    50.9 °F
  • Average High 2010–Present

    60.5 °F
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