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.

Overcast

30°F

-1°C

Humidity 92%
Wind Speed NE 3 mph
Barometer 29.82 in (1010.0 mb)
Dewpoint 28°F (-2°C)
Visibility 8.00 mi
Last update 26 Dec 11:56 pm EST
Extended Forecast for

2 Miles W Mount Gretna PA

Winter Weather Advisory December 27, 12:59am until December 27, 07:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory December 27, 12:59am until December 27, 07:00am

    NOW until 7:00am Sat

    Winter Weather Advisory

  • Overnight

    Low: 28 °F

    Slight Chance
    Freezing Rain

  • Saturday

    Saturday: Partly sunny, with a high near 35. North wind 5 to 7 mph.

    High: 35 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 25. Calm wind.

    Low: 25 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers after 1pm. Cloudy, with a high near 40. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 40 °F

    Cloudy then
    Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely. Cloudy, with a low around 36. Southeast wind 6 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F

    Showers
    Likely

  • Monday

    Monday: Showers likely, mainly before 1pm. Mostly cloudy, with a high near 55. Breezy. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °F

    Showers
    Likely and
    Breezy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 25. Breezy.

    Low: 25 °F

    Mostly Cloudy
    and Breezy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 31. Breezy.

    High: 31 °F

    Mostly Cloudy
    and Breezy

Detailed Forecast

Overnight
A slight chance of freezing rain. Cloudy, with a low around 28. Southeast wind around 6 mph becoming light and variable. Chance of precipitation is 20%.
Saturday
Partly sunny, with a high near 35. North wind 5 to 7 mph.
Saturday Night
Mostly cloudy, with a low around 25. Calm wind.
Sunday
A chance of showers after 1pm. Cloudy, with a high near 40. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Showers likely. Cloudy, with a low around 36. Southeast wind 6 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 55. Breezy. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Mostly cloudy, with a low around 25. Breezy.
Tuesday
Mostly cloudy, with a high near 31. Breezy.
Tuesday Night
Mostly cloudy, with a low around 24. Breezy.
Wednesday
Partly sunny, with a high near 36.
Wednesday Night
Mostly cloudy, with a low around 24.
New Year's Day
Mostly cloudy, with a high near 33.
Thursday Night
Mostly cloudy, with a low around 17.
Friday
Sunny, with a high near 26.
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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:
12:51 am EST Dec 27, 2025
Forecast Valid:
12am EST Dec 27, 2025-6pm EST Jan 2, 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