Harpers Ferry Weather Forecast

    • 61
    • 89

    Chance Thunderstorms

    • 58
    • 88

    Chance Rain Showers

    • 50
    • 81

    Mostly Sunny

    • 57
    • 84

    Mostly Sunny

    • 55
    • 86

    Mostly Sunny

    • 55
    • 83

    Mostly Sunny

    • 55
    • 83

    Mostly Sunny

Today 26 May Allamakee

Mostly sunny. Near steady temperature in the mid 80s. South Winds 5 to 10 Mph.

Tonight 26 May Allamakee

Mostly cloudy with a chance of Showers and Thunderstorms. Lows around 60. Light Winds. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Harpers Ferry Temperature Statistics

May Temperature

Prairie Du Chien Municipal Airport (12.4 miles)

  • Lowest 2 May, 2026

    31.1 °F

  • Average May

    57.5 °F

  • Highest 15 May, 2026

    84.4 °F

Climate (2021–Present)

Prairie Du Chien Municipal Airport (12.4 miles)

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  • Average Low 2021–2026

    40.4 °F

  • Average 2021–2026

    49.9 °F

  • Average High 2021–2026

    59.5 °F
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