Coralville Weather Forecast

    • 64
    • 71

    Rain Showers

    • 53
    • 69

    Rain Showers

    • 48
    • 65

    Mostly Sunny

    • 53
    • 66

    Mostly Sunny

    • 45
    • 66

    Mostly Sunny

    • 48
    • 62

    Mostly Sunny

Today 30 Sep Johnson

Showers with a slight chance of Thunderstorms. Some Thunderstorms may produce heavy rainfall. Humid with Highs in the lower 70s. South Winds 5 to 10 Mph. Chance of rain near 100 percent.

Tonight 30 Sep Johnson

A slight chance of Thunderstorms. Showers. Some Thunderstorms may produce heavy rainfall. Humid with Lows in the mid 60s. South Winds 5 to 10 Mph, becoming southeast after midnight. Chance of rain near 100 percent.

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Coralville Temperature Statistics

September Temperature

Iowa City Municipal Airport (3.7 miles)

  • Lowest 23 September, 2026

    51.7 °F

  • Average September

    71.4 °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

    42.7 °F

  • Average 2021–2026

    53 °F

  • Average High 2021–2026

    63.2 °F
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