Horn Weather Forecast

    • 76
    • 88

    Chance Thunderstorms

    • 74
    • 94

    Mostly Sunny

    • 72
    • 90

    Chance Thunderstorms

    • 71
    • 86

    Chance Thunderstorms

    • 72
    • 90

    Partly Sunny

    • 73
    • 92

    Mostly Sunny

Today 22 Jul Johnson

Mostly sunny. A slight chance of Showers and Thunderstorms this afternoon. Highs in the upper 80s. Southeast Winds around 10 Mph. Chance of rain 20 percent.

Tonight 22 Jul Johnson

Mostly cloudy with a chance of Showers and Thunderstorms in the Evening, then partly cloudy after midnight. Humid with Lows in the mid 70s. South Winds around 10 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Horn Temperature Statistics

July Temperature

Iowa City Municipal Airport (1.2 miles)

  • Lowest 13 July, 2025

    62.7 °F

  • Average July

    77.5 °F

  • Highest 3 July, 2025

    93.7 °F

Climate (2020–Present)

Iowa City Municipal Airport (1.2 miles)

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  • Average Low 2020–2025

    42.2 °F

  • Average 2020–2025

    52.4 °F

  • Average High 2020–2025

    62.6 °F
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