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

Hazardous Weather Conditions

Current conditions at

Hagerstown, Washington County Regional Airport (KHGR)

Lat: 39.71°NLon: 77.73°WElev: 702ft.

Mostly Cloudy

31°F

-1°C

Humidity 76%
Wind Speed S 12 mph
Barometer 29.66 in (1006.0 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 10 Dec 6:53 am EST
Extended Forecast for

Mercersburg PA

  • Today

    Today: A slight chance of snow before 10am, then rain likely. Cloudy, with a high near 44. South wind 7 to 9 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 44 °F

    Chance
    Rain/Snow
    then Rain
    Likely

  • Tonight

    Tonight: Increasing clouds, with a low around 27. West wind 7 to 10 mph, with gusts as high as 28 mph.

    Low: 27 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly sunny, with a high near 34. West wind around 17 mph, with gusts as high as 37 mph.

    High: 34 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 24. West wind 6 to 13 mph, with gusts as high as 28 mph.

    Low: 24 °F

    Partly Cloudy

  • Friday

    Friday: A chance of snow showers. Mostly cloudy, with a high near 35. Southwest wind 3 to 6 mph. Chance of precipitation is 40%.

    High: 35 °F

    Chance Snow
    Showers

  • Friday Night

    Friday Night: A chance of snow showers, mainly before 1am. Mostly cloudy, with a low around 25. Chance of precipitation is 40%.

    Low: 25 °F

    Chance Snow
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 37.

    High: 37 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of snow showers. Mostly cloudy, with a low around 21. Chance of precipitation is 40%.

    Low: 21 °F

    Chance Snow
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 29.

    High: 29 °F

    Partly Sunny

Detailed Forecast

Today
A slight chance of snow before 10am, then rain likely. Cloudy, with a high near 44. South wind 7 to 9 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Tonight
Increasing clouds, with a low around 27. West wind 7 to 10 mph, with gusts as high as 28 mph.
Thursday
Mostly sunny, with a high near 34. West wind around 17 mph, with gusts as high as 37 mph.
Thursday Night
Partly cloudy, with a low around 24. West wind 6 to 13 mph, with gusts as high as 28 mph.
Friday
A chance of snow showers. Mostly cloudy, with a high near 35. Southwest wind 3 to 6 mph. Chance of precipitation is 40%.
Friday Night
A chance of snow showers, mainly before 1am. Mostly cloudy, with a low around 25. Chance of precipitation is 40%.
Saturday
Partly sunny, with a high near 37.
Saturday Night
A chance of snow showers. Mostly cloudy, with a low around 21. Chance of precipitation is 40%.
Sunday
Partly sunny, with a high near 29.
Sunday Night
Partly cloudy, with a low around 15.
Monday
Mostly sunny, with a high near 30.
Monday Night
Mostly cloudy, with a low around 19.
Tuesday
Partly sunny, with a high near 36.
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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:
7:05 am EST Dec 10, 2025
Forecast Valid:
7am EST Dec 10, 2025-6pm EST Dec 16, 2025
 
Forecast Discussion
 
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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