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

79°F

26°C

Humidity 38%
Wind Speed S 5 mph
Barometer 30.19 in (1022.4 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 29 Aug 5:56 pm EDT
Extended Forecast for

Mechanicsburg PA

  • Tonight

    Tonight: Increasing clouds, with a low around 64. Calm wind.

    Low: 64 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A slight chance of showers between 11am and 2pm, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Southwest wind 3 to 7 mph. Chance of precipitation is 20%.

    High: 87 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 4am, then a slight chance of showers between 4am and 5am. Increasing clouds, with a low around 69. Calm wind. Chance of precipitation is 20%.

    Low: 69 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Monday

    Monday: Partly sunny, with a high near 87. Light west wind.

    High: 87 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 71. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 71 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 92.

    High: 92 °F

    Hot

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 73.

    Low: 73 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny and hot, with a high near 92.

    High: 92 °F

    Hot

  • Wednesday Night

    Wednesday Night: A chance of showers between 8pm and 2am. Partly cloudy, with a low around 73. Chance of precipitation is 30%.

    Low: 73 °F

    Chance
    Showers

Detailed Forecast

Tonight
Increasing clouds, with a low around 64. Calm wind.
Sunday
A slight chance of showers between 11am and 2pm, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Southwest wind 3 to 7 mph. Chance of precipitation is 20%.
Sunday Night
A slight chance of showers and thunderstorms before 4am, then a slight chance of showers between 4am and 5am. Increasing clouds, with a low around 69. Calm wind. Chance of precipitation is 20%.
Monday
Partly sunny, with a high near 87. Light west wind.
Monday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 71. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
Mostly sunny and hot, with a high near 92.
Tuesday Night
Partly cloudy, with a low around 73.
Wednesday
Partly sunny and hot, with a high near 92.
Wednesday Night
A chance of showers between 8pm and 2am. Partly cloudy, with a low around 73. Chance of precipitation is 30%.
Thursday
A chance of showers after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 30%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 69. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 84.
Friday Night
Partly cloudy, with a low around 65.
Saturday
Mostly sunny, with a high near 82.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mechanicsburg PA
 40.2°N 77.03°W (Elev. 436 ft)
Last Update:
2:21 pm EDT Aug 29, 2026
Forecast Valid:
6pm EDT Aug 29, 2026-6pm EDT Sep 5, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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