National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Harrisburg, Capital City Airport (KCXY)

Lat: 40.22°NLon: 76.86°WElev: 335ft.

Fair

17°F

-8°C

Humidity 59%
Wind Speed Calm
Barometer 30.26 in (1025.4 mb)
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Last update 9 Dec 8:56 am EST
Extended Forecast for

Duncannon PA

  • Today

    Today: Partly sunny, with a high near 31. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 31 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 26. South wind 5 to 7 mph.

    Low: 26 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Freezing rain likely before 10am, then rain likely. Cloudy, with a high near 42. South wind 7 to 9 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New ice accumulation of less than a 0.1 of an inch possible.

    High: 42 °F

    Rain/Freezing
    Rain Likely
    then Rain
    Likely

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 28. West wind 6 to 9 mph, with gusts as high as 22 mph.

    Low: 28 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 34. West wind around 10 mph, with gusts as high as 23 mph.

    High: 34 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 35.

    High: 35 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of snow before 1am. Mostly cloudy, with a low around 24. Chance of precipitation is 40%.

    Low: 24 °F

    Chance Snow

  • Saturday

    Saturday: Mostly cloudy, with a high near 35.

    High: 35 °F

    Mostly Cloudy

Detailed Forecast

Today
Partly sunny, with a high near 31. Calm wind becoming south 5 to 8 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 26. South wind 5 to 7 mph.
Wednesday
Freezing rain likely before 10am, then rain likely. Cloudy, with a high near 42. South wind 7 to 9 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New ice accumulation of less than a 0.1 of an inch possible.
Wednesday Night
Mostly cloudy, with a low around 28. West wind 6 to 9 mph, with gusts as high as 22 mph.
Thursday
Partly sunny, with a high near 34. West wind around 10 mph, with gusts as high as 23 mph.
Thursday Night
Mostly cloudy, with a low around 23.
Friday
Partly sunny, with a high near 35.
Friday Night
A chance of snow before 1am. Mostly cloudy, with a low around 24. Chance of precipitation is 40%.
Saturday
Mostly cloudy, with a high near 35.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 22. Chance of precipitation is 30%.
Sunday
Partly sunny, with a high near 29.
Sunday Night
Partly cloudy, with a low around 13.
Monday
Mostly sunny, with a high near 29.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Duncannon PA
 40.4°N 77.02°W (Elev. 413 ft)
Last Update:
7:33 am EST Dec 9, 2025
Forecast Valid:
9am EST Dec 9, 2025-6pm EST Dec 15, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation