National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Harrisburg, Harrisburg International Airport (KMDT)

Lat: 40.19°NLon: 76.76°WElev: 312ft.

Partly Cloudy and Breezy

32°F

0°C

Humidity 40%
Wind Speed NW 25 G 32 mph
Barometer 29.80 in (1009.6 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 11 Dec 11:56 am EST
Extended Forecast for

2 Miles W Mount Gretna PA

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 31. West wind around 17 mph, with gusts as high as 37 mph.

    High: 31 °F

    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 24. West wind 10 to 14 mph, with gusts as high as 24 mph.

    Low: 24 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 34. West wind 6 to 8 mph.

    High: 34 °F

    Partly Sunny

  • Friday Night

    Friday Night: A slight chance of snow before 1am. Increasing clouds, with a low around 22. Calm wind. Chance of precipitation is 20%.

    Low: 22 °F

    Slight Chance
    Snow

  • Saturday

    Saturday: Mostly cloudy, with a high near 40. South wind 5 to 11 mph becoming west in the afternoon. Winds could gust as high as 21 mph.

    High: 40 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Snow. Low around 23. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    Low: 23 °F

    Snow

  • Sunday

    Sunday: Partly sunny, with a high near 26.

    High: 26 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 30.

    High: 30 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 31. West wind around 17 mph, with gusts as high as 37 mph.
Tonight
Partly cloudy, with a low around 24. West wind 10 to 14 mph, with gusts as high as 24 mph.
Friday
Partly sunny, with a high near 34. West wind 6 to 8 mph.
Friday Night
A slight chance of snow before 1am. Increasing clouds, with a low around 22. Calm wind. Chance of precipitation is 20%.
Saturday
Mostly cloudy, with a high near 40. South wind 5 to 11 mph becoming west in the afternoon. Winds could gust as high as 21 mph.
Saturday Night
Snow. Low around 23. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Sunday
Partly sunny, with a high near 26.
Sunday Night
Partly cloudy, with a low around 17.
Monday
Mostly sunny, with a high near 30.
Monday Night
Mostly cloudy, with a low around 20.
Tuesday
Mostly sunny, with a high near 34.
Tuesday Night
Mostly cloudy, with a low around 24.
Wednesday
Mostly cloudy, with a high near 43.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W Mount Gretna PA
 40.24°N 76.5°W (Elev. 673 ft)
Last Update:
12:41 pm EST Dec 11, 2025
Forecast Valid:
12pm EST Dec 11, 2025-6pm EST Dec 17, 2025
 
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