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

81°F

27°C

Humidity 47%
Wind Speed Vrbl 5 mph
Barometer 29.97 in (1014.7 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 11 Sep 4:56 pm EDT
Extended Forecast for

Harrisburg International Airport PA

  • Tonight

    Tonight: Partly cloudy, with a low around 61. Calm wind.

    Low: 61 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 81. Southeast wind 5 to 10 mph.

    High: 81 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Showers and thunderstorms before 2am, then showers and possibly a thunderstorm, mainly after 2am. Low around 68. Southeast wind 3 to 8 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 68 °F

    Chance
    T-storms then
    Showers

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly before 8am. Cloudy through mid morning, then gradual clearing, with a high near 84. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 84 °F

    Showers
    Likely then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 64. West wind 3 to 6 mph.

    Low: 64 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 61. Calm wind.
Saturday
Mostly cloudy, with a high near 81. Southeast wind 5 to 10 mph.
Saturday Night
Showers and thunderstorms before 2am, then showers and possibly a thunderstorm, mainly after 2am. Low around 68. Southeast wind 3 to 8 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
Showers and thunderstorms likely, mainly before 8am. Cloudy through mid morning, then gradual clearing, with a high near 84. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Partly cloudy, with a low around 64. West wind 3 to 6 mph.
Monday
Mostly sunny, with a high near 76.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Sunny, with a high near 75.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Partly cloudy, with a low around 62.
Thursday
A chance of showers. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
Thursday Night
A chance of showers. Partly cloudy, with a low around 61. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg International Airport PA
 40.22°N 76.76°W (Elev. 446 ft)
Last Update:
2:21 pm EDT Sep 11, 2026
Forecast Valid:
5pm EDT Sep 11, 2026-6pm EDT Sep 18, 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