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

64°F

18°C

Humidity 93%
Wind Speed Calm
Barometer 30.21 in (1022.9 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 9 Sep 2:56 am EDT
Extended Forecast for

Mechanicsburg PA

  • Overnight

    Overnight: Mostly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 88. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 88 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, mainly between 2am and 5am. Increasing clouds, with a low around 71. South wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 71 °F

    Partly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 83. West wind 5 to 7 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Partly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 64. Northwest wind 3 to 5 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 50%.

    High: 79 °F

    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers before 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 50%.

    Low: 67 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 63. Calm wind.
Wednesday
Partly sunny, with a high near 88. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Wednesday Night
A chance of showers and thunderstorms, mainly between 2am and 5am. Increasing clouds, with a low around 71. South wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 83. West wind 5 to 7 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A slight chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 64. Northwest wind 3 to 5 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Sunny, with a high near 80.
Friday Night
Partly cloudy, with a low around 60.
Saturday
A chance of showers after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 50%.
Saturday Night
A chance of showers before 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 50%.
Sunday
A chance of showers after 2pm. Mostly cloudy, with a high near 84. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 84.
Monday Night
Partly cloudy, with a low around 67.
Tuesday
Mostly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
Mechanicsburg PA
 40.22°N 77°W (Elev. 440 ft)
Last Update:
2:31 am EDT Sep 9, 2026
Forecast Valid:
3am EDT Sep 9, 2026-6pm EDT Sep 15, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation