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

70°F

21°C

Humidity 57%
Wind Speed E 5 mph
Barometer 30.15 in (1021.4 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 3 Aug 11:53 pm EDT
Extended Forecast for

Mercersburg PASimilar City Names

  • Overnight

    Overnight: Clear, with a low around 57. Calm wind.

    Low: 57 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 87. Light and variable wind.

    High: 87 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 61. Calm wind.

    Low: 61 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 88. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 88 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 65. Calm wind.

    Low: 65 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of showers after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 30%.

    High: 82 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.

    Low: 64 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 30%.

    High: 82 °F

    Partly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers before 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    Showers

Detailed Forecast

Overnight
Clear, with a low around 57. Calm wind.
Monday
Sunny, with a high near 87. Light and variable wind.
Monday Night
Partly cloudy, with a low around 61. Calm wind.
Tuesday
Partly sunny, with a high near 88. Calm wind becoming southeast around 5 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 65. Calm wind.
Wednesday
A chance of showers after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 30%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.
Thursday
A chance of showers after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 30%.
Thursday Night
A chance of showers before 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 83.
Friday Night
Partly cloudy, with a low around 63.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
Partly cloudy, with a low around 67.
Sunday
Mostly sunny, with a high near 89.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mercersburg PASimilar City Names
 39.82°N 77.9°W (Elev. 600 ft)
Last Update:
12:41 pm EDT Aug 3, 2025
Forecast Valid:
12am EDT Aug 4, 2025-6pm EDT Aug 10, 2025
 
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