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.

Mostly Cloudy

64°F

18°C

Humidity 45%
Wind Speed S 8 mph
Barometer 29.88 in (1012.7 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 11 Nov 12:53 pm EST
Extended Forecast for

Mercersburg PA

  • Veterans Day

    Veterans Day: Partly sunny, with a high near 65. South wind 3 to 5 mph.

    High: 65 °F

    Partly Sunny

  • Tonight

    Tonight: A slight chance of rain after 4am. Mostly cloudy, with a low around 46. Calm wind. Chance of precipitation is 20%.

    Low: 46 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday

    Thursday: A chance of rain between 9am and noon. Cloudy, then gradually becoming mostly sunny, with a high near 59. Light and variable wind becoming northwest 5 to 10 mph in the afternoon. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 59 °F

    Chance Rain
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 37. Northwest wind 9 to 11 mph, with gusts as high as 24 mph.

    Low: 37 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 49. Northwest wind 11 to 14 mph, with gusts as high as 25 mph.

    High: 49 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 32.

    Low: 32 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

Detailed Forecast

Veterans Day
Partly sunny, with a high near 65. South wind 3 to 5 mph.
Tonight
A slight chance of rain after 4am. Mostly cloudy, with a low around 46. Calm wind. Chance of precipitation is 20%.
Thursday
A chance of rain between 9am and noon. Cloudy, then gradually becoming mostly sunny, with a high near 59. Light and variable wind becoming northwest 5 to 10 mph in the afternoon. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Mostly cloudy, with a low around 37. Northwest wind 9 to 11 mph, with gusts as high as 24 mph.
Friday
Mostly sunny, with a high near 49. Northwest wind 11 to 14 mph, with gusts as high as 25 mph.
Friday Night
Mostly cloudy, with a low around 32.
Saturday
Partly sunny, with a high near 48.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
Mostly sunny, with a high near 51.
Sunday Night
Partly cloudy, with a low around 31.
Monday
Mostly sunny, with a high near 52.
Monday Night
Partly cloudy, with a low around 29.
Tuesday
Mostly sunny, with a high near 53.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mercersburg PA
 39.82°N 77.9°W (Elev. 600 ft)
Last Update:
7:06 am EST Nov 11, 2026
Forecast Valid:
1pm EST Nov 11, 2026-6pm EST Nov 17, 2026
 
Forecast Discussion
 
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Additional Resources

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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