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

73°F

23°C

Humidity 71%
Wind Speed W 10 mph
Barometer 29.66 in (1004.3 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 29 Jul 8:56 am EDT
Extended Forecast for

Duncannon PA

  • Today

    Today: A slight chance of showers before 4pm, then a slight chance of showers after 5pm. Partly sunny, with a high near 81. Northwest wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    High: 81 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 63. West wind 7 to 9 mph, with gusts as high as 21 mph.

    Low: 63 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 82. North wind 9 to 11 mph, with gusts as high as 22 mph.

    High: 82 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62. North wind 5 to 7 mph becoming calm in the evening.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 86. Light north wind.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 86.

    High: 86 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of showers between 8pm and 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm, mainly after 2pm. Mostly cloudy, with a high near 84. Chance of precipitation is 60%.

    High: 84 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

Today
A slight chance of showers before 4pm, then a slight chance of showers after 5pm. Partly sunny, with a high near 81. Northwest wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 63. West wind 7 to 9 mph, with gusts as high as 21 mph.
Thursday
Mostly sunny, with a high near 82. North wind 9 to 11 mph, with gusts as high as 22 mph.
Thursday Night
Mostly clear, with a low around 62. North wind 5 to 7 mph becoming calm in the evening.
Friday
Sunny, with a high near 86. Light north wind.
Friday Night
Partly cloudy, with a low around 65.
Saturday
Partly sunny, with a high near 86.
Saturday Night
A chance of showers between 8pm and 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.
Sunday
Showers likely and possibly a thunderstorm, mainly after 2pm. Mostly cloudy, with a high near 84. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Monday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 84. Chance of precipitation is 50%.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
Tuesday
A chance of showers. Mostly sunny, with a high near 86. Chance of precipitation is 40%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Duncannon PA
 40.4°N 77.02°W (Elev. 413 ft)
Last Update:
9:03 am EDT Jul 29, 2026
Forecast Valid:
9am EDT Jul 29, 2026-6pm EDT Aug 4, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation