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.

Partly Cloudy

76°F

24°C

Humidity 37%
Wind Speed SW 8 mph
Barometer 30.02 in (1016.4 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 26 Aug 4:56 pm EDT
Extended Forecast for

Duncannon PA

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 52. West wind around 6 mph becoming calm in the evening.

    Low: 52 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Sunny, with a high near 75. Calm wind becoming northwest 5 to 7 mph in the morning.

    High: 75 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 52. Light west wind.

    Low: 52 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 78. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 78 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers, mainly after 2am. Mostly cloudy, with a low around 56. Light southwest wind. Chance of precipitation is 30%.

    Low: 56 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers before 8am, then a slight chance of showers after 2pm. Partly sunny, with a high near 74. Chance of precipitation is 30%.

    High: 74 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming clear, with a low around 52. West wind around 6 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 75. Calm wind becoming northwest 5 to 7 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 52. Light west wind.
Thursday
Mostly sunny, with a high near 78. Calm wind becoming southwest around 6 mph in the afternoon.
Thursday Night
A chance of showers, mainly after 2am. Mostly cloudy, with a low around 56. Light southwest wind. Chance of precipitation is 30%.
Friday
A chance of showers before 8am, then a slight chance of showers after 2pm. Partly sunny, with a high near 74. Chance of precipitation is 30%.
Friday Night
Mostly clear, with a low around 51.
Saturday
Sunny, with a high near 73.
Saturday Night
Partly cloudy, with a low around 51.
Sunday
Mostly sunny, with a high near 76.
Sunday Night
Mostly clear, with a low around 54.
Labor Day
Mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 55.
Tuesday
Mostly sunny, with a high near 78.
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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:
3:56 pm EDT Aug 26, 2025
Forecast Valid:
5pm EDT Aug 26, 2025-6pm EDT Sep 2, 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation