Harpers Ferry Weather Forecast

    • 43
    • 65

    Chance Rain Showers

    • 45
    • 64

    Partly Sunny

    • 45
    • 65

    Chance Rain Showers

    • 47
    • 63

    Chance Rain Showers

    • 51
    • 72

    Mostly Cloudy

    • 54
    • 78

    Partly Sunny

    • 58
    • 85

    Partly Sunny

Today 19 May Allamakee

Mostly cloudy and much cooler. Near steady temperature in the upper 50s. Northwest Winds 10 to 15 Mph.

Tonight 19 May Allamakee

Mostly cloudy in the Evening, then becoming partly cloudy. Much Colder with Lows in the lower 40s. Northwest Winds 10 to 15 Mph.

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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

    56.3 °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

    40.5 °F

  • Average 2021–2026

    50 °F

  • Average High 2021–2026

    59.6 °F
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