Duncannon Weather Forecast

    • 50
    • 57

    Rain

    • 49
    • 59

    Rain Showers

    • 46
    • 60

    Chance Rain Showers

    • 46
    • 63

    Chance Rain Showers

    • 51
    • 69

    Slight Chance Rain Showers

    • 53
    • 71

    Chance Rain Showers

Today 21 May Perry

Showers, cooler with Highs in the mid 50s. Southeast Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of rain near 100 percent.

Tonight 21 May Perry

Showers. Lows in the upper 40s. Southeast Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of rain near 100 percent.

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Duncannon Temperature Statistics

May Temperature

Harrisburg, Capital City Airport (14.9 miles)

  • Lowest 9 May, 2025

    47.6 °F

  • Average May

    67.7 °F

  • Highest 2 May, 2025

    87.7 °F

Climate (2020–Present)

Harrisburg, Capital City Airport (14.9 miles)

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  • Average Low 2020–2025

    48.2 °F

  • Average 2020–2025

    57.4 °F

  • Average High 2020–2025

    66.9 °F
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