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

22°F

-6°C

Humidity 63%
Wind Speed W 3 mph
Barometer 30.30 in (1027.9 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Last update 18 Mar 3:53 am EDT
Extended Forecast for

3 Miles SSW Mercersburg PA

  • Today

    Today: Mostly sunny, with a high near 40. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 40 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 28. Light southeast wind.

    Low: 28 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 51. Calm wind becoming south around 5 mph in the afternoon.

    High: 51 °F

    Partly Sunny

  • Thursday Night

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

    Low: 36 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of rain after 2pm. Partly sunny, with a high near 59. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 30%.

    High: 59 °F

    Partly Sunny
    then Chance
    Rain

  • Friday Night

    Friday Night: Showers likely, mainly before 2am. Mostly cloudy, with a low around 45. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 45 °F

    Showers
    Likely

  • Saturday

    Saturday: A chance of showers before 8am. Mostly sunny, with a high near 64. Chance of precipitation is 30%.

    High: 64 °F

    Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers after 2pm. Partly sunny, with a high near 69. Chance of precipitation is 30%.

    High: 69 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 40. Calm wind becoming south 5 to 7 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 28. Light southeast wind.
Thursday
Partly sunny, with a high near 51. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 36. Calm wind.
Friday
A chance of rain after 2pm. Partly sunny, with a high near 59. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 30%.
Friday Night
Showers likely, mainly before 2am. Mostly cloudy, with a low around 45. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
A chance of showers before 8am. Mostly sunny, with a high near 64. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 46.
Sunday
A chance of showers after 2pm. Partly sunny, with a high near 69. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 42. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 53.
Monday Night
Partly cloudy, with a low around 29.
Tuesday
Partly sunny, with a high near 47.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Mercersburg PA
 39.78°N 77.94°W (Elev. 551 ft)
Last Update:
4:01 am EDT Mar 18, 2026
Forecast Valid:
4am EDT Mar 18, 2026-6pm EDT Mar 24, 2026
 
Forecast Discussion
 
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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