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.

A Few Clouds

71°F

22°C

Humidity 71%
Wind Speed N 3 mph
Barometer 30.17 in (1021.3 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 15 Aug 7:56 am EDT
Extended Forecast for

Harrisburg International Airport PA

  • Today

    Today: Sunny, with a high near 86. Light north wind.

    High: 86 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 71. East wind around 6 mph.

    Low: 71 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Showers and possibly a thunderstorm, mainly before 5pm, then a chance of showers and thunderstorms after 5pm. High near 79. South wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    High: 79 °F

    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 2am, then a slight chance of showers. Low around 72. Southeast wind 9 to 13 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 72 °F

    Showers

  • Monday

    Monday: Mostly sunny, with a high near 86. Northwest wind around 10 mph.

    High: 86 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 86. Light north wind.
Tonight
Increasing clouds, with a low around 71. East wind around 6 mph.
Sunday
Showers and possibly a thunderstorm, mainly before 5pm, then a chance of showers and thunderstorms after 5pm. High near 79. South wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Sunday Night
Showers and possibly a thunderstorm before 2am, then a slight chance of showers. Low around 72. Southeast wind 9 to 13 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Monday
Mostly sunny, with a high near 86. Northwest wind around 10 mph.
Monday Night
Mostly clear, with a low around 67.
Tuesday
Sunny, with a high near 83.
Tuesday Night
Mostly clear, with a low around 64.
Wednesday
Sunny, with a high near 86.
Wednesday Night
A chance of showers before 2am. Partly cloudy, with a low around 69. Chance of precipitation is 40%.
Thursday
A chance of showers. Partly sunny, with a high near 84. Chance of precipitation is 30%.
Thursday Night
A chance of showers. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg International Airport PA
 40.2°N 76.77°W (Elev. 299 ft)
Last Update:
8:06 am EDT Aug 15, 2026
Forecast Valid:
8am EDT Aug 15, 2026-6pm EDT Aug 21, 2026
 
Forecast Discussion
 
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Additional Resources

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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