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

38°F

3°C

Humidity 83%
Wind Speed S 5 mph
Barometer 30.04 in (1018.7 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 10 Nov 5:53 am EST
Extended Forecast for

Mercersburg PA

  • Today

    Today: Sunny, with a high near 69. Light southwest wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 22 mph.

    High: 69 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, mostly clear, with a low around 37. Light and variable wind.

    Low: 37 °F

    Clear then
    Patchy Fog

  • Veterans Day

    Veterans Day: Patchy fog before 8am. Otherwise, partly sunny, with a high near 66. Light and variable wind.

    High: 66 °F

    Patchy Fog
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: A chance of rain after 1am. Mostly cloudy, with a low around 45. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 45 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: Rain. High near 57. Calm wind becoming west 5 to 7 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 57 °F

    Rain

  • Thursday Night

    Thursday Night: A chance of rain. Mostly cloudy, with a low around 39. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Chance Rain

  • Friday

    Friday: A chance of rain before 1pm. Mostly cloudy, with a high near 49. Chance of precipitation is 30%.

    High: 49 °F

    Chance Rain

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 49.

    High: 49 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 69. Light southwest wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 22 mph.
Tonight
Patchy fog after 3am. Otherwise, mostly clear, with a low around 37. Light and variable wind.
Veterans Day
Patchy fog before 8am. Otherwise, partly sunny, with a high near 66. Light and variable wind.
Wednesday Night
A chance of rain after 1am. Mostly cloudy, with a low around 45. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain. High near 57. Calm wind becoming west 5 to 7 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 39. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A chance of rain before 1pm. Mostly cloudy, with a high near 49. Chance of precipitation is 30%.
Friday Night
Mostly cloudy, with a low around 29.
Saturday
Partly sunny, with a high near 49.
Saturday Night
Partly cloudy, with a low around 30.
Sunday
Mostly sunny, with a high near 51.
Sunday Night
Partly cloudy, with a low around 29.
Monday
Mostly sunny, with a high near 54.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mercersburg PA
 39.82°N 77.88°W (Elev. 551 ft)
Last Update:
6:36 am EST Nov 10, 2026
Forecast Valid:
6am EST Nov 10, 2026-6pm EST Nov 16, 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