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.

Mostly Cloudy

73°F

23°C

Humidity 66%
Wind Speed N 5 mph
Barometer 29.89 in (1011.8 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 5 Sep 6:56 am EDT
Extended Forecast for

Duncannon PA

  • Today

    Today: Mostly sunny, with a high near 82. Calm wind becoming north around 6 mph in the afternoon.

    High: 82 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 57. Light north wind.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 80. North wind 3 to 6 mph.

    High: 80 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 1am. Otherwise, mostly clear, with a low around 55. Light north wind.

    Low: 55 °F

    Mostly Clear
    then Patchy
    Fog

  • Labor Day

    Labor Day: Patchy fog before 9am. Otherwise, sunny, with a high near 80. Calm wind.

    High: 80 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 83.

    High: 83 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 61.

    Low: 61 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 82. Calm wind becoming north around 6 mph in the afternoon.
Tonight
Mostly clear, with a low around 57. Light north wind.
Sunday
Mostly sunny, with a high near 80. North wind 3 to 6 mph.
Sunday Night
Patchy fog after 1am. Otherwise, mostly clear, with a low around 55. Light north wind.
Labor Day
Patchy fog before 9am. Otherwise, sunny, with a high near 80. Calm wind.
Monday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 56.
Tuesday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 83.
Tuesday Night
Mostly cloudy, with a low around 61.
Wednesday
Mostly sunny, with a high near 88.
Wednesday Night
Partly cloudy, with a low around 70.
Thursday
Mostly sunny, with a high near 83.
Thursday Night
Partly cloudy, with a low around 59.
Friday
Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Duncannon PA
 40.4°N 77.02°W (Elev. 413 ft)
Last Update:
6:11 am EDT Sep 5, 2026
Forecast Valid:
7am EDT Sep 5, 2026-6pm EDT Sep 11, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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Chance of Precipitation