Duncannon Weather Forecast

    • 27
    • 40

    Partly Sunny

    • 38
    • 47

    Increasing Clouds

    • 25
    • 47

    Rain Likely

    • 17
    • 32

    Chance Snow

    • 22
    • 30

    Mostly Cloudy

    • 21
    • 38

    Slight Chance Snow Showers

    • 14
    • 30

    Partly Sunny

Today 12 Jan Perry

Partly sunny. Near steady temperature in the upper 30s. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 12 Jan Perry

Mostly clear. Lows in the upper 20s. Southwest Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Duncannon Temperature Statistics

January Temperature

Harrisburg, Capital City Airport (14.9 miles)

  • Lowest 1 January, 2026

    19 °F

  • Average January

    34.3 °F

  • Highest 7 January, 2026

    57 °F

Climate (2021–Present)

Harrisburg, Capital City Airport (14.9 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    47.8 °F

  • Average 2021–2026

    57.1 °F

  • Average High 2021–2026

    66.5 °F
Get WillyWeather+ to remove ads