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.

Overcast

68°F

20°C

Humidity 81%
Wind Speed E 6 mph
Barometer 30.12 in (1020.5 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 15 Jun 10:53 am EDT
Extended Forecast for

Mercersburg PASimilar City Names

  • Today

    Today: Scattered showers and thunderstorms. Cloudy, with a high near 68. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 68 °F

    Scattered
    Showers

  • Tonight

    Tonight: Showers likely, mainly before 2am. Patchy fog after 9pm. Otherwise, cloudy, with a low around 62. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 62 °F

    Showers
    Likely and
    Patchy Fog

  • Monday

    Monday: A chance of showers. Patchy fog before 9am. Otherwise, cloudy, with a high near 71. Light east wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 71 °F

    Chance
    Showers and
    Patchy Fog

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Cloudy, with a low around 63. Calm wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 78. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Showers
    Likely then
    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers after 2pm. Partly sunny, with a high near 90. Chance of precipitation is 40%.

    High: 90 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers before 8pm. Partly cloudy, with a low around 70. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    Showers then
    Partly Cloudy

  • Juneteenth

    Juneteenth: Showers likely after 2pm. Partly sunny, with a high near 90. Chance of precipitation is 60%.

    High: 90 °F

    Mostly Sunny
    then Showers
    Likely

Detailed Forecast

Today
Scattered showers and thunderstorms. Cloudy, with a high near 68. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers likely, mainly before 2am. Patchy fog after 9pm. Otherwise, cloudy, with a low around 62. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday
A chance of showers. Patchy fog before 9am. Otherwise, cloudy, with a high near 71. Light east wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
A chance of showers and thunderstorms. Cloudy, with a low around 63. Calm wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
A slight chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 78. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers after 2pm. Partly sunny, with a high near 90. Chance of precipitation is 40%.
Wednesday Night
A chance of showers before 8pm. Partly cloudy, with a low around 70. Chance of precipitation is 30%.
Juneteenth
Showers likely after 2pm. Partly sunny, with a high near 90. Chance of precipitation is 60%.
Thursday Night
Showers likely before 8pm. Partly cloudy, with a low around 64. Chance of precipitation is 60%.
Friday
Mostly sunny, with a high near 82.
Friday Night
Partly cloudy, with a low around 61.
Saturday
Mostly sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
Mercersburg PASimilar City Names
 39.82°N 77.9°W (Elev. 600 ft)
Last Update:
11:07 am EDT Jun 15, 2025
Forecast Valid:
11am EDT Jun 15, 2025-6pm EDT Jun 21, 2025
 
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