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.

Mostly Cloudy

37°F

3°C

Humidity 46%
Wind Speed W 20 G 32 mph
Barometer 29.98 in (1015.6 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 11 Jan 4:56 pm EST
Extended Forecast for

Marietta PA

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 31. Breezy, with a west wind 15 to 25 mph, with gusts as high as 37 mph.

    Low: 31 °F

    Decreasing
    Clouds and
    Breezy

  • Monday

    Monday: Mostly sunny, with a high near 42. West wind 10 to 13 mph, with gusts as high as 21 mph.

    High: 42 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 32. West wind 6 to 8 mph.

    Low: 32 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 48. Southwest wind 6 to 10 mph.

    High: 48 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40. Southwest wind 10 to 13 mph.

    Low: 40 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of showers before 1pm, then a chance of rain after 1pm. Cloudy, with a high near 49. Chance of precipitation is 40%.

    High: 49 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of rain. Mostly cloudy, with a low around 35. Chance of precipitation is 50%.

    Low: 35 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain before 1pm, then a chance of rain and snow. Mostly cloudy, with a high near 38. Chance of precipitation is 50%.

    High: 38 °F

    Chance Rain
    then Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: A chance of snow before 1am. Mostly cloudy, with a low around 23. Chance of precipitation is 30%.

    Low: 23 °F

    Chance Snow

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming clear, with a low around 31. Breezy, with a west wind 15 to 25 mph, with gusts as high as 37 mph.
Monday
Mostly sunny, with a high near 42. West wind 10 to 13 mph, with gusts as high as 21 mph.
Monday Night
Partly cloudy, with a low around 32. West wind 6 to 8 mph.
Tuesday
Mostly sunny, with a high near 48. Southwest wind 6 to 10 mph.
Tuesday Night
Mostly cloudy, with a low around 40. Southwest wind 10 to 13 mph.
Wednesday
A chance of showers before 1pm, then a chance of rain after 1pm. Cloudy, with a high near 49. Chance of precipitation is 40%.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 35. Chance of precipitation is 50%.
Thursday
A chance of rain before 1pm, then a chance of rain and snow. Mostly cloudy, with a high near 38. Chance of precipitation is 50%.
Thursday Night
A chance of snow before 1am. Mostly cloudy, with a low around 23. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 32.
Friday Night
Partly cloudy, with a low around 23.
Saturday
Mostly sunny, with a high near 37.
Saturday Night
Mostly cloudy, with a low around 26.
Sunday
Partly sunny, with a high near 35.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marietta PA
 40.04°N 76.56°W (Elev. 299 ft)
Last Update:
3:41 pm EST Jan 11, 2026
Forecast Valid:
5pm EST Jan 11, 2026-6pm EST Jan 18, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation