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

Hagerstown, Washington County Regional Airport (KHGR)

Lat: 39.71°NLon: 77.73°WElev: 702ft.

Mostly Cloudy

35°F

2°C

Humidity 46%
Wind Speed W 17 G 26 mph
Barometer 30.12 in (1021.6 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 28 Nov 10:53 am EST
Extended Forecast for

Mercersburg PA

  • Today

    Today: Partly sunny, with a high near 39. West wind 14 to 17 mph, with gusts as high as 36 mph.

    High: 39 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 24. West wind 6 to 9 mph.

    Low: 24 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 41. West wind around 5 mph becoming calm in the morning.

    High: 41 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of snow showers, mainly after 1am. Cloudy, with a low around 29. Calm wind becoming south 5 to 9 mph after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 40%.

    Low: 29 °F

    Chance Snow
    Showers

  • Sunday

    Sunday: Rain and snow showers likely, becoming all rain after 10am. Cloudy, with a high near 44. South wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 44 °F

    Rain/Snow
    Likely then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 39.

    High: 39 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of rain and snow. Mostly cloudy, with a high near 36. Chance of precipitation is 50%.

    High: 36 °F

    Chance
    Rain/Snow

Detailed Forecast

Today
Partly sunny, with a high near 39. West wind 14 to 17 mph, with gusts as high as 36 mph.
Tonight
Mostly clear, with a low around 24. West wind 6 to 9 mph.
Saturday
Mostly sunny, with a high near 41. West wind around 5 mph becoming calm in the morning.
Saturday Night
A chance of snow showers, mainly after 1am. Cloudy, with a low around 29. Calm wind becoming south 5 to 9 mph after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 40%.
Sunday
Rain and snow showers likely, becoming all rain after 10am. Cloudy, with a high near 44. South wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Sunday Night
Mostly cloudy, with a low around 28.
Monday
Partly sunny, with a high near 39.
Monday Night
Mostly cloudy, with a low around 27.
Tuesday
A chance of rain and snow. Mostly cloudy, with a high near 36. Chance of precipitation is 50%.
Tuesday Night
Mostly cloudy, with a low around 23.
Wednesday
Mostly sunny, with a high near 39.
Wednesday Night
Mostly cloudy, with a low around 23.
Thursday
Mostly cloudy, with a high near 40.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mercersburg PA
 39.82°N 77.9°W (Elev. 600 ft)
Last Update:
9:36 am EST Nov 28, 2025
Forecast Valid:
11am EST Nov 28, 2025-6pm EST Dec 4, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation