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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Mercersburg PA

  • Overnight

    Overnight: Areas of drizzle between 3am and 4am. Patchy fog after 2am. Otherwise, cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Areas Drizzle
    and Patchy
    Fog

  • Friday

    Friday: Patchy fog before 10am. Otherwise, cloudy, with a high near 55. Calm wind.

    High: 55 °F

    Patchy Fog
    then Cloudy

  • Friday Night

    Friday Night: Rain, mainly after 10pm. Low around 45. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 45 °F

    Rain

  • Saturday

    Saturday: A chance of rain before 7am, then a slight chance of showers between 7am and 1pm. Cloudy through mid morning, then gradual clearing, with a high near 53. Northwest wind 5 to 7 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 53 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 30. Light northwest wind.

    Low: 30 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Areas of drizzle between 3am and 4am. Patchy fog after 2am. Otherwise, cloudy, with a low around 38. Calm wind.
Friday
Patchy fog before 10am. Otherwise, cloudy, with a high near 55. Calm wind.
Friday Night
Rain, mainly after 10pm. Low around 45. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
A chance of rain before 7am, then a slight chance of showers between 7am and 1pm. Cloudy through mid morning, then gradual clearing, with a high near 53. Northwest wind 5 to 7 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Mostly clear, with a low around 30. Light northwest wind.
Sunday
Sunny, with a high near 55.
Sunday Night
Mostly clear, with a low around 33.
Monday
Sunny, with a high near 56.
Monday Night
Mostly cloudy, with a low around 39.
Tuesday
A chance of showers after 1pm. Cloudy, with a high near 53. Chance of precipitation is 40%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 45. Chance of precipitation is 50%.
Wednesday
A chance of showers. Partly sunny, with a high near 62. Chance of precipitation is 30%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 38. Chance of precipitation is 30%.
Thanksgiving Day
Partly sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mercersburg PA
 39.82°N 77.9°W (Elev. 600 ft)
Last Update:
1:05 am EST Nov 21, 2025
Forecast Valid:
1am EST Nov 21, 2025-6pm EST Nov 27, 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