Coralville Weather Forecast

    • 65
    • 72

    Rain Showers

    • 65
    • 79

    Chance Rain Showers

    • 68
    • 81

    Rain Showers Likely

    • 64
    • 82

    Rain Showers Likely

    • 59
    • 74

    Chance Rain Showers

    • 57
    • 70

    Slight Chance Rain Showers

Today 16 Sep Johnson

A slight chance of Thunderstorms in the morning. Mostly cloudy with a chance of Showers. Highs in the lower 70s. East Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 16 Sep Johnson

Mostly cloudy with a chance of Thunderstorms. A chance of Showers in the Evening, then Showers after midnight. Locally heavy rainfall possible after midnight. Humid with Lows in the mid 60s. East Winds around 5 Mph. Chance of rain 90 percent.

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Coralville Temperature Statistics

September Temperature

Iowa City Municipal Airport (3.7 miles)

  • Lowest 13 September, 2026

    55 °F

  • Average September

    77.1 °F

  • Highest 1 September, 2026

    95.6 °F

Climate (2021–2026)

Iowa City Municipal Airport (3.7 miles)

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  • Average Low 2021–2026

    42.6 °F

  • Average 2021–2026

    53 °F

  • Average High 2021–2026

    63.3 °F
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