Harpers Ferry Weather Forecast

    • 60
    • 82

    Mostly Sunny

    • 56
    • 83

    Mostly Sunny

    • 62
    • 84

    Partly Sunny

    • 67
    • 83

    Chance Thunderstorms

    • 70
    • 88

    Chance Rain Showers

    • 67
    • 88

    Chance Rain Showers

    • 65
    • 86

    Chance Rain Showers

Today 26 Aug Allamakee

Mostly sunny. Near steady temperature around 80. Northwest Winds 5 to 10 Mph.

Tonight 26 Aug Allamakee

Partly cloudy. Lows in the upper 50s. Northwest Winds 5 to 10 Mph.

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Harpers Ferry Temperature Statistics

August Temperature

Prairie Du Chien Municipal Airport (12.4 miles)

  • Lowest 23 August, 2026

    53.1 °F

  • Average August

    71.1 °F

  • Highest 10 August, 2026

    85.3 °F

Climate (2021–2026)

Prairie Du Chien Municipal Airport (12.4 miles)

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  • Average Low 2021–2026

    40.5 °F

  • Average 2021–2026

    49.9 °F

  • Average High 2021–2026

    59.5 °F
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