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.

Fog

45°F

7°C

Humidity 97%
Wind Speed N 3 mph
Barometer 30.17 in (1022.9 mb)
Dewpoint 44°F (7°C)
Visibility 0.25 mi
Last update 5 Mar 8:53 am EST
Extended Forecast for

3 Miles N Mercersburg PA

  • Today

    Today: Rain likely, then rain and possibly a thunderstorm after 4pm. Areas of fog before 2pm. High near 56. Light and variable wind. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 56 °F

    Chance Rain
    and Areas Fog
    then Rain and
    Patchy Fog

  • Tonight

    Tonight: Rain and possibly a thunderstorm before 2am, then a slight chance of rain between 2am and 4am. Low around 46. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 46 °F

    Rain then
    Chance Rain

  • Friday

    Friday: A slight chance of rain after 1pm. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 58. Calm wind. Chance of precipitation is 20%.

    High: 58 °F

    Patchy Fog
    then Slight
    Chance Rain

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Mostly Cloudy

  • Saturday

    Saturday: Showers likely after 1pm. Mostly cloudy, with a high near 70. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 70 °F

    Mostly Cloudy
    then Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely before 1am, then a chance of rain after 1am. Mostly cloudy, with a low around 54. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 54 °F

    Showers
    Likely

  • Sunday

    Sunday: Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

Detailed Forecast

Today
Rain likely, then rain and possibly a thunderstorm after 4pm. Areas of fog before 2pm. High near 56. Light and variable wind. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Rain and possibly a thunderstorm before 2am, then a slight chance of rain between 2am and 4am. Low around 46. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Friday
A slight chance of rain after 1pm. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 58. Calm wind. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, with a low around 48. Calm wind.
Saturday
Showers likely after 1pm. Mostly cloudy, with a high near 70. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Showers likely before 1am, then a chance of rain after 1am. Mostly cloudy, with a low around 54. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Partly sunny, with a high near 65.
Sunday Night
Partly cloudy, with a low around 47.
Monday
Sunny, with a high near 69.
Monday Night
Mostly clear, with a low around 50.
Tuesday
Mostly sunny, with a high near 75.
Tuesday Night
Mostly cloudy, with a low around 58.
Wednesday
A chance of showers. Mostly cloudy, with a high near 78. Chance of precipitation is 50%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Mercersburg PA
 39.87°N 77.9°W (Elev. 564 ft)
Last Update:
7:06 am EST Mar 5, 2026
Forecast Valid:
9am EST Mar 5, 2026-6pm EDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation