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.

Overcast

75°F

24°C

Humidity 88%
Wind Speed NW 8 mph
Barometer 29.93 in (1013.1 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 11 Sep 12:56 am EDT
Extended Forecast for

Harrisburg International Airport PA

  • Overnight

    Overnight: A slight chance of showers after 2am. Mostly cloudy, with a low around 66. Northwest wind around 5 mph. Chance of precipitation is 20%.

    Low: 66 °F

    Slight Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 81. North wind 3 to 6 mph.

    High: 81 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 61. East wind around 5 mph becoming calm in the evening.

    Low: 61 °F

    Partly Cloudy

  • Saturday

    Saturday: Showers likely, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 80. East wind 6 to 10 mph becoming south in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 80 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 69. Southeast wind 6 to 11 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 69 °F

    Showers

  • Sunday

    Sunday: A chance of showers before 8am. Partly sunny, with a high near 83. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 83 °F

    Chance
    Showers then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

Detailed Forecast

Overnight
A slight chance of showers after 2am. Mostly cloudy, with a low around 66. Northwest wind around 5 mph. Chance of precipitation is 20%.
Friday
Partly sunny, with a high near 81. North wind 3 to 6 mph.
Friday Night
Partly cloudy, with a low around 61. East wind around 5 mph becoming calm in the evening.
Saturday
Showers likely, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 80. East wind 6 to 10 mph becoming south in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 69. Southeast wind 6 to 11 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
A chance of showers before 8am. Partly sunny, with a high near 83. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Partly cloudy, with a low around 63.
Monday
Mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 57.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
Partly cloudy, with a low around 63.
Wednesday
A chance of showers. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 65. Chance of precipitation is 30%.
Thursday
A chance of showers. Partly sunny, with a high near 83. Chance of precipitation is 40%.
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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:
8:11 pm EDT Sep 10, 2026
Forecast Valid:
1am EDT Sep 11, 2026-6pm EDT Sep 17, 2026
 
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