Windham Weather Forecast

    • 71
    • 91

    Thunderstorms Likely

    • 62
    • 83

    Thunderstorms Likely

    • 57
    • 81

    Mostly Sunny

    • 66
    • 85

    Rain Showers Likely

    • 60
    • 84

    Chance Rain Showers

    • 61
    • 79

    Rain Showers Likely

Today 8 Sep Johnson

Mostly sunny. Hot with Highs around 90. South Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 8 Sep Johnson

Partly cloudy with a chance of Showers and Thunderstorms in the Evening, then occasional Showers and Thunderstorms after midnight. Humid with Lows in the lower 70s. Southeast Winds 5 to 10 Mph, becoming southwest after midnight. Chance of rain near 100 percent.

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Windham Temperature Statistics

September Temperature

Iowa City Municipal Airport (11.2 miles)

  • Lowest 6 September, 2026

    70 °F

  • Average September

    83 °F

  • Highest 1 September, 2026

    95.6 °F

Climate (2021–2026)

Iowa City Municipal Airport (11.2 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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