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

67°F

19°C

Humidity 76%
Wind Speed NW 3 mph
Barometer 29.93 in (1013.2 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 19 Aug 3:56 am EDT
Extended Forecast for

3 Miles ENE Duncannon PA

  • Today

    Today: Patchy fog before 8am. Otherwise, increasing clouds, with a high near 86. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 86 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 65. Calm wind.

    Low: 65 °F

    Partly Cloudy

  • Thursday

    Thursday: Showers likely, mainly before 4pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 79. Light north wind. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 79 °F

    Showers
    Likely and
    Patchy Fog

  • Thursday Night

    Thursday Night: A chance of showers before 7pm. Patchy fog after 1am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 59. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 59 °F

    Chance
    Showers then
    Patchy Fog

  • Friday

    Friday: Mostly sunny, with a high near 82. Light and variable wind.

    High: 82 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of showers after 2am. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 62. Chance of precipitation is 20%.

    Low: 62 °F

    Partly Cloudy
    then Slight
    Chance
    Showers and
    Patchy Fog

  • Saturday

    Saturday: A chance of showers after 8am. Patchy fog before 8am. Otherwise, partly sunny, with a high near 81. Chance of precipitation is 40%.

    High: 81 °F

    Chance
    Showers and
    Patchy Fog

  • Saturday Night

    Saturday Night: A chance of showers before 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 40%.

    Low: 63 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 30%.

    High: 82 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Patchy fog before 8am. Otherwise, increasing clouds, with a high near 86. Calm wind becoming southwest around 6 mph in the afternoon.
Tonight
Partly cloudy, with a low around 65. Calm wind.
Thursday
Showers likely, mainly before 4pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 79. Light north wind. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
A chance of showers before 7pm. Patchy fog after 1am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 59. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Mostly sunny, with a high near 82. Light and variable wind.
Friday Night
A slight chance of showers after 2am. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 62. Chance of precipitation is 20%.
Saturday
A chance of showers after 8am. Patchy fog before 8am. Otherwise, partly sunny, with a high near 81. Chance of precipitation is 40%.
Saturday Night
A chance of showers before 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 40%.
Sunday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 59. Chance of precipitation is 30%.
Monday
Sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Mostly sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Duncannon PA
 40.42°N 76.99°W (Elev. 367 ft)
Last Update:
2:21 am EDT Aug 19, 2026
Forecast Valid:
4am EDT Aug 19, 2026-6pm EDT Aug 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation