Current conditions at

Harrisburg, Harrisburg International Airport (KMDT)

Lat: 40.19°NLon: 76.76°WElev: 312ft.

A Few Clouds

62°F

17°C

Humidity 60%
Wind Speed Vrbl 5 mph
Barometer 30.21 in (1022.9 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 15 Oct 11:56 am EDT
Extended Forecast for

Marietta PA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 65. East wind 3 to 5 mph.

    High: 65 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of showers before 2am, then a chance of rain and thunderstorms between 2am and 3am, then a chance of rain after 3am.  Cloudy, with a low around 58. Southeast wind 5 to 10 mph.  Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 58 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Friday

    Friday: A chance of rain and thunderstorms before 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then showers likely and possibly a thunderstorm after 5pm.  Cloudy through mid morning, then gradual clearing, with a high near 80. Southwest wind 11 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Chance Rain
    then Showers
    Likely

  • Friday Night

    Friday Night: Showers and thunderstorms likely before 8pm, then a chance of showers.  Mostly cloudy, with a low around 46. West wind 15 to 18 mph, with gusts as high as 24 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 46 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 53. Breezy, with a north wind 18 to 20 mph, with gusts as high as 30 mph.

    High: 53 °F

    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Areas of frost after 3am.  Otherwise, mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear
    then Areas
    Frost

  • Sunday

    Sunday: Widespread frost, mainly before 8am.  Otherwise, sunny, with a high near 57.

    High: 57 °F

    Frost then
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 65. East wind 3 to 5 mph.
Tonight
A chance of showers before 2am, then a chance of rain and thunderstorms between 2am and 3am, then a chance of rain after 3am. Cloudy, with a low around 58. Southeast wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A chance of rain and thunderstorms before 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Cloudy through mid morning, then gradual clearing, with a high near 80. Southwest wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and thunderstorms likely before 8pm, then a chance of showers. Mostly cloudy, with a low around 46. West wind 15 to 18 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Mostly sunny, with a high near 53. Breezy, with a north wind 18 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Areas of frost after 3am. Otherwise, mostly clear, with a low around 34.
Sunday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 57.
Sunday Night
Mostly clear, with a low around 38.
Monday
Sunny, with a high near 62.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
Partly sunny, with a high near 65.
Tuesday Night
Partly cloudy, with a low around 44.
Wednesday
Sunny, with a high near 65.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Marietta PA
 40.07°N 76.56°W (Elev. 299 ft)
12:31 pm EDT Oct 15, 2026
12pm EDT Oct 15, 2026-6pm EDT Oct 21, 2026
 
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