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

64°F

18°C

Humidity 54%
Wind Speed E 5 mph
Barometer 29.81 in (1009.4 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 16 Jun 11:56 pm EDT
Extended Forecast for

Duncannon PA

  • Overnight

    Overnight: Mostly cloudy, with a low around 57. Light southeast wind.

    Low: 57 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 83. Calm wind becoming southwest 5 to 9 mph in the afternoon.

    High: 83 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 64. Calm wind becoming southeast around 6 mph after midnight.

    Low: 64 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 88. Southwest wind 10 to 16 mph, with gusts as high as 32 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 63. West wind 5 to 11 mph, with gusts as high as 24 mph.

    Low: 63 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 57. Light southeast wind.
Wednesday
Mostly sunny, with a high near 83. Calm wind becoming southwest 5 to 9 mph in the afternoon.
Wednesday Night
Increasing clouds, with a low around 64. Calm wind becoming southeast around 6 mph after midnight.
Thursday
A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 88. Southwest wind 10 to 16 mph, with gusts as high as 32 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Partly cloudy, with a low around 63. West wind 5 to 11 mph, with gusts as high as 24 mph.
Juneteenth
Mostly sunny, with a high near 80.
Friday Night
Mostly clear, with a low around 59.
Saturday
Sunny, with a high near 79.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Sunny, with a high near 82.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 40%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 79. Chance of precipitation is 50%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Chance of precipitation is 40%.
Tuesday
Mostly sunny, with a high near 81.
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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:
10:01 pm EDT Jun 16, 2026
Forecast Valid:
12am EDT Jun 17, 2026-6pm EDT Jun 23, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation