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.

Overcast

76°F

24°C

Humidity 88%
Wind Speed S 5 mph
Barometer 30.16 in (1020.9 mb)
Dewpoint 72°F (22°C)
Visibility 9.00 mi
Heat Index76°F (24°C)
Last update 16 Aug 3:56 am EDT
Extended Forecast for

Mechanicsburg PA

  • Overnight

    Overnight: A slight chance of showers and thunderstorms after 5am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 71. Calm wind. Chance of precipitation is 20%.

    Low: 71 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Saturday

    Saturday: A chance of showers and thunderstorms, mainly after 1pm. Patchy fog before 7am. Otherwise, partly sunny, with a high near 89. Light southeast wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Chance
    T-storms and
    Patchy Fog

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, mainly before 7pm. Mostly clear, with a low around 70. Calm wind. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 92. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 92 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 70. North wind 3 to 5 mph. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Monday

    Monday: A slight chance of showers after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 20%.

    High: 81 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 66.

    Low: 66 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of showers after 2pm. Mostly cloudy, with a high near 80. Chance of precipitation is 40%.

    High: 80 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers. Mostly cloudy, with a low around 65. Chance of precipitation is 50%.

    Low: 65 °F

    Chance
    Showers

Detailed Forecast

Overnight
A slight chance of showers and thunderstorms after 5am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 71. Calm wind. Chance of precipitation is 20%.
Saturday
A chance of showers and thunderstorms, mainly after 1pm. Patchy fog before 7am. Otherwise, partly sunny, with a high near 89. Light southeast wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms, mainly before 7pm. Mostly clear, with a low around 70. Calm wind. Chance of precipitation is 30%.
Sunday
A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 92. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 70. North wind 3 to 5 mph. Chance of precipitation is 30%.
Monday
A slight chance of showers after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 20%.
Monday Night
Mostly cloudy, with a low around 66.
Tuesday
A chance of showers after 2pm. Mostly cloudy, with a high near 80. Chance of precipitation is 40%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 65. Chance of precipitation is 50%.
Wednesday
A chance of showers. Partly sunny, with a high near 79. Chance of precipitation is 50%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
Partly cloudy, with a low around 62.
Friday
Mostly sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mechanicsburg PA
 40.22°N 77°W (Elev. 440 ft)
Last Update:
2:03 am EDT Aug 16, 2025
Forecast Valid:
4am EDT Aug 16, 2025-6pm EDT Aug 22, 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