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

66°F

19°C

Humidity 50%
Wind Speed Calm
Barometer 30.23 in (1023.6 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 11 May 8:56 am EDT
Extended Forecast for

Duncannon PA

  • Today

    Today: Sunny, with a high near 74. North wind 5 to 7 mph.

    High: 74 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 49. Light northeast wind.

    Low: 49 °F

    Partly Cloudy

  • Monday

    Monday: A slight chance of showers after 2pm. Partly sunny, with a high near 76. South wind 5 to 7 mph. Chance of precipitation is 20%.

    High: 76 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, mainly after 2am. Cloudy, with a low around 60. Southeast wind 3 to 5 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 60 °F

    Chance
    Showers then
    Showers
    Likely

  • Tuesday

    Tuesday: Showers, with thunderstorms also possible after 2pm. High near 68. East wind 6 to 8 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 68 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 8pm, then showers between 8pm and 2am, then showers and possibly a thunderstorm after 2am. Low around 61. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 61 °F

    Showers

  • Wednesday

    Wednesday: Showers likely, then showers and possibly a thunderstorm after 2pm. High near 69. Chance of precipitation is 80%.

    High: 69 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 8pm, then showers likely. Low around 61. Chance of precipitation is 80%.

    Low: 61 °F

    Showers

  • Thursday

    Thursday: A chance of showers before 8am, then a chance of showers after 2pm. Mostly cloudy, with a high near 77. Chance of precipitation is 50%.

    High: 77 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 74. North wind 5 to 7 mph.
Tonight
Partly cloudy, with a low around 49. Light northeast wind.
Monday
A slight chance of showers after 2pm. Partly sunny, with a high near 76. South wind 5 to 7 mph. Chance of precipitation is 20%.
Monday Night
Showers likely, mainly after 2am. Cloudy, with a low around 60. Southeast wind 3 to 5 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
Showers, with thunderstorms also possible after 2pm. High near 68. East wind 6 to 8 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
Showers and possibly a thunderstorm before 8pm, then showers between 8pm and 2am, then showers and possibly a thunderstorm after 2am. Low around 61. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Showers likely, then showers and possibly a thunderstorm after 2pm. High near 69. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm before 8pm, then showers likely. Low around 61. Chance of precipitation is 80%.
Thursday
A chance of showers before 8am, then a chance of showers after 2pm. Mostly cloudy, with a high near 77. Chance of precipitation is 50%.
Thursday Night
A chance of showers before 8pm. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 62. Chance of precipitation is 30%.
Friday
Showers likely. Partly sunny, with a high near 84. Chance of precipitation is 60%.
Friday Night
Showers likely. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Saturday
A chance of showers. Partly sunny, with a high near 81. Chance of precipitation is 50%.
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ABOUT THIS FORECAST

 
Point Forecast:
Duncannon PA
 40.4°N 77.02°W (Elev. 413 ft)
Last Update:
7:22 am EDT May 11, 2025
Forecast Valid:
9am EDT May 11, 2025-6pm EDT May 17, 2025
 
Forecast Discussion
 
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Additional Resources

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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