Current conditions at

Harrisburg, Harrisburg International Airport (KMDT)

Lat: 40.19°NLon: 76.76°WElev: 312ft.

Mostly Cloudy

62°F

17°C

Humidity 90%
Wind Speed Calm
Barometer 30.02 in (1016.5 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 17 May 4:56 am EDT
Extended Forecast for

2 Miles WSW Mount Gretna PA

  • Today

    Today: Mostly sunny, with a high near 87. West wind 3 to 6 mph.

    High: 87 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Partly Cloudy

  • Monday

    Monday: Sunny and hot, with a high near 93. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 93 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 67. South wind 6 to 9 mph.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 94. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 94 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm after 2pm.  High near 88. Chance of precipitation is 80%.

    High: 88 °F

    Mostly Sunny
    then Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 8pm.  Low around 54. Chance of precipitation is 80%.

    Low: 54 °F

    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 70.

    High: 70 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 87. West wind 3 to 6 mph.
Tonight
Partly cloudy, with a low around 63. Calm wind.
Monday
Sunny and hot, with a high near 93. Calm wind becoming south 5 to 7 mph in the afternoon.
Monday Night
Mostly clear, with a low around 67. South wind 6 to 9 mph.
Tuesday
Mostly sunny and hot, with a high near 94. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 69.
Wednesday
Showers and possibly a thunderstorm after 2pm. High near 88. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm before 8pm. Low around 54. Chance of precipitation is 80%.
Thursday
Partly sunny, with a high near 70.
Thursday Night
Mostly cloudy, with a low around 50.
Friday
A chance of showers. Mostly cloudy, with a high near 66. Chance of precipitation is 50%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.
Saturday
A chance of showers. Mostly cloudy, with a high near 68. Chance of precipitation is 50%.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Mount Gretna PA
 40.24°N 76.5°W (Elev. 673 ft)
3:40 am EDT May 17, 2026
5am EDT May 17, 2026-6pm EDT May 23, 2026
 
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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