Iowa City Municipal Airport Weather Forecast

    • 65
    • 91

    Slight Chance Thunderstorms

    • 62
    • 89

    Slight Chance Thunderstorms

    • 63
    • 89

    Partly Sunny

    • 62
    • 82

    Chance Thunderstorms

    • 59
    • 78

    Chance Rain Showers

    • 57
    • 76

    Slight Chance Rain Showers

Today 15 Sep Johnson

Partly cloudy Early, then becoming partly sunny. A slight chance of Showers and Thunderstorms this afternoon. Humid with Highs in the upper 80s. Southeast Winds around 5 Mph. Chance of rain 20 percent.

Tonight 15 Sep Johnson

Mostly cloudy with a slight chance of Showers and Thunderstorms in the Evening, then partly cloudy after midnight. Humid with Lows in the mid 60s. Southeast Winds around 5 Mph. Chance of rain 20 percent.

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Iowa City Municipal Airport Temperature Statistics

September Temperature

Iowa City Municipal Airport (0 miles)

  • Lowest 7 September, 2025

    41 °F

  • Average September

    64.2 °F

  • Highest 12 September, 2025

    90 °F

Climate (2020–Present)

Iowa City Municipal Airport (0 miles)

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  • Average Low 2020–2025

    42.3 °F

  • Average 2020–2025

    52.4 °F

  • Average High 2020–2025

    62.6 °F
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