Iowa City Municipal Airport Weather Forecast

    • 74
    • 95

    Decreasing Clouds

    • 69
    • 93

    Increasing Clouds

    • 66
    • 86

    Chance Rain Showers

    • 68
    • 85

    Partly Sunny

    • 73
    • 94

    Chance Thunderstorms

    • 66
    • 90

    Chance Rain Showers

    • 63
    • 84

    Partly Sunny

Today 4 Sep Johnson

Sunny, hot. Near steady temperature in the mid 90s. Southwest Winds 5 to 10 Mph. Heat index Values up to 105.

Tonight 4 Sep Johnson

Partly cloudy this Evening, then becoming mostly clear. Lows in the lower 70s. Southwest Winds around 5 Mph. Heat index Values up to 101 early this evening.

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Iowa City Municipal Airport Temperature Statistics

September Temperature

Iowa City Municipal Airport (0 miles)

  • Lowest 2 September, 2026

    73 °F

  • Average September

    84.1 °F

  • Highest 1 September, 2026

    95.6 °F

Climate (2021–2026)

Iowa City Municipal Airport (0 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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