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

Harrisburg, Harrisburg International Airport (KMDT)

Lat: 40.19°NLon: 76.76°WElev: 312ft.

Overcast

71°F

22°C

Humidity 94%
Wind Speed E 7 mph
Barometer 29.89 in (1012.2 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 16 Aug 7:56 pm EDT
Extended Forecast for

Campbelltown PA

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 11pm, then a chance of showers and thunderstorms between 11pm and midnight, then a chance of showers after midnight. Patchy fog after 1am. Low around 68. South wind 3 to 6 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 68 °F

    T-storms then
    Chance
    Showers and
    Patchy Fog

  • Monday

    Monday: A chance of showers and thunderstorms after 2pm. Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 86. Northwest wind 3 to 8 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    Patchy Fog
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 66. Northwest wind around 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 84. Northwest wind 5 to 8 mph.

    High: 84 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63. Light west wind.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers after 2am. Partly cloudy, with a low around 66. Chance of precipitation is 30%.

    Low: 66 °F

    Partly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 80. Chance of precipitation is 40%.

    High: 80 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.

    Low: 60 °F

    Chance
    T-storms then
    Mostly Cloudy

Detailed Forecast

Tonight
Showers and possibly a thunderstorm before 11pm, then a chance of showers and thunderstorms between 11pm and midnight, then a chance of showers after midnight. Patchy fog after 1am. Low around 68. South wind 3 to 6 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Monday
A chance of showers and thunderstorms after 2pm. Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 86. Northwest wind 3 to 8 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
A chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 66. Northwest wind around 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
Sunny, with a high near 84. Northwest wind 5 to 8 mph.
Tuesday Night
Mostly clear, with a low around 63. Light west wind.
Wednesday
Sunny, with a high near 86.
Wednesday Night
A chance of showers after 2am. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
Thursday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 80. Chance of precipitation is 40%.
Thursday Night
A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 80.
Friday Night
Partly cloudy, with a low around 61.
Saturday
Partly sunny, with a high near 80.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 62. Chance of precipitation is 30%.
Sunday
A chance of showers. Partly sunny, with a high near 80. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Campbelltown PA
 40.27°N 76.58°W (Elev. 512 ft)
Last Update:
8:35 pm EDT Aug 16, 2026
Forecast Valid:
8pm EDT Aug 16, 2026-6pm EDT Aug 23, 2026
 
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