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

34°F

1°C

Humidity 54%
Wind Speed W 10 mph
Barometer 29.85 in (1012.4 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 10 Nov 6:53 pm EST
Extended Forecast for

Mercersburg PA

  • Tonight

    Tonight: Partly cloudy, with a low around 27. West wind 8 to 13 mph, with gusts as high as 29 mph.

    Low: 27 °F

    Partly Cloudy

  • Veterans Day

    Veterans Day: Mostly sunny, with a high near 43. West wind 14 to 18 mph, with gusts as high as 37 mph.

    High: 43 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 31. Southwest wind around 7 mph.

    Low: 31 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 53. South wind 7 to 14 mph becoming west in the afternoon. Winds could gust as high as 29 mph.

    High: 53 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 35. West wind around 8 mph.

    Low: 35 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 27. West wind 8 to 13 mph, with gusts as high as 29 mph.
Veterans Day
Mostly sunny, with a high near 43. West wind 14 to 18 mph, with gusts as high as 37 mph.
Tuesday Night
Mostly cloudy, with a low around 31. Southwest wind around 7 mph.
Wednesday
Partly sunny, with a high near 53. South wind 7 to 14 mph becoming west in the afternoon. Winds could gust as high as 29 mph.
Wednesday Night
Partly cloudy, with a low around 35. West wind around 8 mph.
Thursday
Mostly sunny, with a high near 53.
Thursday Night
Mostly clear, with a low around 32.
Friday
Mostly sunny, with a high near 58.
Friday Night
Partly cloudy, with a low around 34.
Saturday
Mostly sunny, with a high near 55.
Saturday Night
Mostly cloudy, with a low around 38.
Sunday
A chance of showers. Mostly cloudy, with a high near 62. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 44. Chance of precipitation is 40%.
Monday
A chance of showers. Partly sunny, with a high near 56. Chance of precipitation is 30%.
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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:
3:36 pm EST Nov 10, 2025
Forecast Valid:
7pm EST Nov 10, 2025-6pm EST Nov 17, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation