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.

Fair

72°F

22°C

Humidity 46%
Wind Speed S 9 mph
Barometer 29.73 in (1007.6 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 22 Mar 12:53 pm EDT
Extended Forecast for

4 Miles S Mercersburg PA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 81. Southwest wind around 10 mph, with gusts as high as 21 mph.

    High: 81 °F

    Mostly Sunny

  • Tonight

    Tonight: Showers and thunderstorms before 4am, then showers likely. Some of the storms could be severe. Low around 46. North wind around 6 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 46 °F

    Severe
    Thunderstorms

  • Monday

    Monday: Cloudy through mid morning, then gradual clearing, with a high near 53. Northwest wind around 14 mph, with gusts as high as 24 mph.

    High: 53 °F

    Gradual
    Clearing

  • Monday Night

    Monday Night: Mostly clear, with a low around 31. Northwest wind 5 to 9 mph, with gusts as high as 20 mph.

    Low: 31 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 50. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 50 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 59.

    High: 59 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers after 2am. Mostly cloudy, with a low around 44. Chance of precipitation is 30%.

    Low: 44 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: A chance of showers. Mostly cloudy, with a high near 65. Chance of precipitation is 30%.

    High: 65 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 81. Southwest wind around 10 mph, with gusts as high as 21 mph.
Tonight
Showers and thunderstorms before 4am, then showers likely. Some of the storms could be severe. Low around 46. North wind around 6 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Monday
Cloudy through mid morning, then gradual clearing, with a high near 53. Northwest wind around 14 mph, with gusts as high as 24 mph.
Monday Night
Mostly clear, with a low around 31. Northwest wind 5 to 9 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 50. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
Partly sunny, with a high near 59.
Wednesday Night
A chance of showers after 2am. Mostly cloudy, with a low around 44. Chance of precipitation is 30%.
Thursday
A chance of showers. Mostly cloudy, with a high near 65. Chance of precipitation is 30%.
Thursday Night
Showers likely, mainly before 2am. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.
Friday
A chance of showers. Partly sunny, with a high near 52. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 28.
Saturday
Sunny, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Mercersburg PA
 39.76°N 77.89°W (Elev. 587 ft)
Last Update:
8:05 am EDT Mar 22, 2026
Forecast Valid:
1pm EDT Mar 22, 2026-6pm EDT Mar 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation