Harpers Ferry Weather Forecast

    • 67
    • 90

    Rain Showers Likely

    • 64
    • 83

    Rain Showers Likely

    • 64
    • 85

    Chance Thunderstorms

    • 65
    • 86

    Mostly Sunny

    • 66
    • 89

    Mostly Sunny

    • 68
    • 91

    Mostly Sunny

Today 8 Jul Allamakee

Mostly sunny. Highs in the upper 80s. Southwest Winds 5 to 10 Mph. Heat index Values in the mid 90s this afternoon.

Tonight 8 Jul Allamakee

Mostly cloudy with a chance of Thunderstorms. Showers likely in the Evening, then a chance of Showers after midnight. Humid with Lows in the mid 60s. Southwest Winds 5 to 10 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Harpers Ferry Temperature Statistics

July Temperature

Prairie Du Chien Municipal Airport (12.4 miles)

  • Lowest 6 July, 2026

    63.9 °F

  • Average July

    75.1 °F

  • Highest 1 July, 2026

    89.6 °F

Climate (2021–2026)

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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