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

74°F

23°C

Humidity 91%
Wind Speed S 5 mph
Barometer 30.06 in (1018.3 mb)
Dewpoint 71°F (22°C)
Visibility 9.00 mi
Last update 1 Sep 7:53 am EDT
Extended Forecast for

4 Miles W Mercersburg PA

  • Today

    Today: Mostly sunny, with a high near 88. West wind 3 to 7 mph.

    High: 88 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of showers and thunderstorms between 9pm and 1am. Partly cloudy, with a low around 71. Light west wind. Chance of precipitation is 20%.

    Low: 71 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers between 9am and 11am. Mostly sunny, with a high near 87. Light and variable wind. Chance of precipitation is 20%.

    High: 87 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 2am. Some of the storms could be severe. Mostly cloudy, with a low around 71. Southeast wind 3 to 5 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 71 °F

    Severe
    Thunderstorms

  • Thursday

    Thursday: Mostly sunny, with a high near 87. West wind 3 to 7 mph.

    High: 87 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Some of the storms could be severe. Partly cloudy, with a low around 70. Chance of precipitation is 20%.

    Low: 70 °F

    Severe
    Thunderstorms
    then Slight
    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 66.

    Low: 66 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 88. West wind 3 to 7 mph.
Tonight
A slight chance of showers and thunderstorms between 9pm and 1am. Partly cloudy, with a low around 71. Light west wind. Chance of precipitation is 20%.
Wednesday
A slight chance of showers between 9am and 11am. Mostly sunny, with a high near 87. Light and variable wind. Chance of precipitation is 20%.
Wednesday Night
A chance of showers and thunderstorms before 2am. Some of the storms could be severe. Mostly cloudy, with a low around 71. Southeast wind 3 to 5 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Mostly sunny, with a high near 87. West wind 3 to 7 mph.
Thursday Night
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Some of the storms could be severe. Partly cloudy, with a low around 70. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 84.
Friday Night
Mostly cloudy, with a low around 66.
Saturday
Mostly sunny, with a high near 79.
Saturday Night
Partly cloudy, with a low around 60.
Sunday
Mostly sunny, with a high near 77.
Sunday Night
Partly cloudy, with a low around 60.
Labor Day
Mostly sunny, with a high near 77.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Mercersburg PA
 39.83°N 77.96°W (Elev. 1424 ft)
Last Update:
8:06 am EDT Sep 1, 2026
Forecast Valid:
8am EDT Sep 1, 2026-6pm EDT Sep 7, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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