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.

Overcast

69°F

21°C

Humidity 33%
Wind Speed SW 14 G 26 mph
Barometer 29.80 in (1009.9 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 20 Mar 3:53 pm EDT
Extended Forecast for

3 Miles SSW Mercersburg PA

  • This Afternoon

    This Afternoon: Rain, mainly after 5pm. High near 68. Southwest wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 68 °F

    Rain

  • Tonight

    Tonight: Rain and thunderstorms before midnight, then a chance of showers and thunderstorms between midnight and 1am. Low around 46. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 46 °F

    Showers then
    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 63. Northwest wind around 5 mph becoming calm in the afternoon.

    High: 63 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 79. South wind 3 to 8 mph.

    High: 79 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 47. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 47 °F

    Showers
    Likely

  • Monday

    Monday: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 50.

    High: 50 °F

    Sunny

Detailed Forecast

This Afternoon
Rain, mainly after 5pm. High near 68. Southwest wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain and thunderstorms before midnight, then a chance of showers and thunderstorms between midnight and 1am. Low around 46. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Mostly sunny, with a high near 63. Northwest wind around 5 mph becoming calm in the afternoon.
Saturday Night
Partly cloudy, with a low around 45. Calm wind.
Sunday
Partly sunny, with a high near 79. South wind 3 to 8 mph.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 47. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Partly sunny, with a high near 55.
Monday Night
Mostly clear, with a low around 33.
Tuesday
Sunny, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
Partly sunny, with a high near 50.
Wednesday Night
Partly cloudy, with a low around 33.
Thursday
Mostly sunny, with a high near 62.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 43. Chance of precipitation is 50%.
Friday
A chance of showers. Partly sunny, with a high near 55.
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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:
4:17 pm EDT Mar 20, 2026
Forecast Valid:
4pm EDT Mar 20, 2026-6pm EDT Mar 27, 2026
 
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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