Harpers Ferry Weather Forecast

    • 54
    • 74

    Rain Showers

    • 58
    • 82

    Mostly Sunny

    • 62
    • 84

    Chance Thunderstorms

    • 64
    • 83

    Chance Thunderstorms

    • 65
    • 86

    Chance Thunderstorms

    • 63
    • 84

    Chance Rain Showers

Today 5 Aug Allamakee

Mostly cloudy with a slight chance of Showers and Thunderstorms. Highs in the mid 70s. North Winds around 5 Mph. Chance of rain 20 percent.

Tonight 5 Aug Allamakee

Partly cloudy. Areas of fog after midnight. Lows in the mid 50s. West Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Harpers Ferry Temperature Statistics

August Temperature

Prairie Du Chien Municipal Airport (12.4 miles)

  • Lowest 3 August, 2026

    59 °F

  • Average August

    71.2 °F

  • Highest 3 August, 2026

    83.3 °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

    50 °F

  • Average High 2021–2026

    59.5 °F
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