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/Mist

47°F

8°C

Humidity 97%
Wind Speed Calm
Barometer 30.08 in (1019.8 mb)
Dewpoint 46°F (8°C)
Visibility 6.00 mi
Last update 9 Jan 8:53 pm EST
Extended Forecast for

3 Miles SSW Mercersburg PA

  • Tonight

    Tonight: A slight chance of showers before 10pm. Mostly cloudy, with a low around 41. Light north wind. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

    Low: 41 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Rain, mainly between 10am and 3pm. Patchy fog after 10am. High near 45. Calm wind. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 45 °F

    Rain Likely
    and Patchy
    Fog then Rain
    and Patchy
    Fog

  • Saturday Night

    Saturday Night: A chance of rain, mainly between 7pm and 1am. Patchy dense fog before 1am. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 35. Calm wind becoming west 5 to 9 mph after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 35 °F

    Chance Rain
    and Patchy
    Dense Fog

  • Sunday

    Sunday: A slight chance of rain showers before 10am, then a slight chance of rain and snow showers between 10am and 4pm, then a slight chance of rain showers after 4pm. Mostly sunny, with a high near 41. West wind 8 to 16 mph, with gusts as high as 37 mph. Chance of precipitation is 20%.

    High: 41 °F

    Slight Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 28. West wind 10 to 14 mph, with gusts as high as 39 mph.

    Low: 28 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of showers before 10pm. Mostly cloudy, with a low around 41. Light north wind. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Saturday
Rain, mainly between 10am and 3pm. Patchy fog after 10am. High near 45. Calm wind. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
A chance of rain, mainly between 7pm and 1am. Patchy dense fog before 1am. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 35. Calm wind becoming west 5 to 9 mph after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
A slight chance of rain showers before 10am, then a slight chance of rain and snow showers between 10am and 4pm, then a slight chance of rain showers after 4pm. Mostly sunny, with a high near 41. West wind 8 to 16 mph, with gusts as high as 37 mph. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 28. West wind 10 to 14 mph, with gusts as high as 39 mph.
Monday
Mostly sunny, with a high near 43.
Monday Night
Mostly clear, with a low around 29.
Tuesday
Mostly sunny, with a high near 49.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
Mostly cloudy, with a high near 48.
Wednesday Night
Mostly cloudy, with a low around 29.
Thursday
Partly sunny, with a high near 36.
Thursday Night
Mostly cloudy, with a low around 20.
Friday
Mostly sunny, with a high near 35.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Mercersburg PA
 39.78°N 77.94°W (Elev. 551 ft)
Last Update:
8:36 pm EST Jan 9, 2026
Forecast Valid:
9pm EST Jan 9, 2026-6pm EST Jan 16, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation