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.

Fair

54°F

12°C

Humidity 30%
Wind Speed NW 16 G 28 mph
Barometer 30.03 in (1017.9 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 13 Nov 3:53 pm EST
Extended Forecast for

Mercersburg PA

  • Tonight

    Tonight: Mostly clear, with a low around 33. West wind 5 to 8 mph becoming calm in the evening.

    Low: 33 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 56. Calm wind becoming west 5 to 8 mph in the morning.

    High: 56 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of rain after 1pm. Mostly cloudy, with a high near 61. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 61 °F

    Mostly Cloudy
    then Chance
    Rain

  • Saturday Night

    Saturday Night: Rain likely, mainly before 1am. Mostly cloudy, with a low around 49. South wind 6 to 9 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 49 °F

    Rain Likely

  • Sunday

    Sunday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 33. West wind 5 to 8 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 56. Calm wind becoming west 5 to 8 mph in the morning.
Friday Night
Mostly cloudy, with a low around 36. Calm wind.
Saturday
A chance of rain after 1pm. Mostly cloudy, with a high near 61. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 49. South wind 6 to 9 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Mostly sunny, with a high near 58.
Sunday Night
Mostly clear, with a low around 34.
Monday
Sunny, with a high near 51.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
A chance of rain after 1pm. Partly sunny, with a high near 50. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 32.
Wednesday
Partly sunny, with a high near 52.
Wednesday Night
Mostly cloudy, with a low around 35.
Thursday
Mostly cloudy, with a high near 54.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mercersburg PA
 39.82°N 77.88°W (Elev. 551 ft)
Last Update:
3:11 pm EST Nov 13, 2025
Forecast Valid:
4pm EST Nov 13, 2025-6pm EST Nov 20, 2025
 
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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