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

Hazardous Weather Conditions

Current conditions at

Harrisburg, Capital City Airport (KCXY)

Lat: 40.22°NLon: 76.86°WElev: 335ft.

Fair

88°F

31°C

Humidity 35%
Wind Speed SW 12 G 23 mph
Barometer 29.74 in (1006.9 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 16 Apr 4:56 pm EDT
Extended Forecast for

Duncannon PA

  • Tonight

    Tonight: A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am. Partly cloudy during the early evening, then becoming cloudy, with a low around 63. Southwest wind 5 to 9 mph becoming light and variable after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 40%.

    Low: 63 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: A slight chance of showers between 4pm and 5pm. Mostly sunny, with a high near 78. Northwest wind 3 to 6 mph. Chance of precipitation is 20%.

    High: 78 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 56. Calm wind.

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers after 2pm. Mostly sunny, with a high near 81. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 20%.

    High: 81 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Mostly cloudy, with a low around 46. Southeast wind 6 to 8 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 46 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely, mainly before 2pm. Mostly cloudy, with a high near 56. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 56 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers before 8pm. Partly cloudy, with a low around 36. Chance of precipitation is 30%.

    Low: 36 °F

    Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am. Partly cloudy during the early evening, then becoming cloudy, with a low around 63. Southwest wind 5 to 9 mph becoming light and variable after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 40%.
Friday
A slight chance of showers between 4pm and 5pm. Mostly sunny, with a high near 78. Northwest wind 3 to 6 mph. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 56. Calm wind.
Saturday
A slight chance of showers after 2pm. Mostly sunny, with a high near 81. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 20%.
Saturday Night
A slight chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Mostly cloudy, with a low around 46. Southeast wind 6 to 8 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 56. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
A chance of showers before 8pm. Partly cloudy, with a low around 36. Chance of precipitation is 30%.
Monday
Sunny, with a high near 49.
Monday Night
Mostly clear, with a low around 30.
Tuesday
Sunny, with a high near 62.
Tuesday Night
Partly cloudy, with a low around 48.
Wednesday
Partly sunny, with a high near 71.
Wednesday Night
Partly cloudy, with a low around 44.
Thursday
Sunny, with a high near 69.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Duncannon PA
 40.4°N 77.02°W (Elev. 413 ft)
Last Update:
2:51 pm EDT Apr 16, 2026
Forecast Valid:
5pm EDT Apr 16, 2026-6pm EDT Apr 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation