National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Hagerstown, Washington County Regional Airport (KHGR)

Lat: 39.71°NLon: 77.73°WElev: 702ft.

Overcast

63°F

17°C

Humidity 65%
Wind Speed NW 12 mph
Barometer 29.86 in (1012.0 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 16 Oct 7:53 pm EDT
Extended Forecast for

3 Miles NW Mercersburg PA

Freeze Watch October 18, 01:00am until October 18, 09:00am
Click here for hazard details and duration
Freeze Watch

  • Tonight

    Tonight: Increasing clouds, with a low around 47. Northwest wind 11 to 13 mph, with gusts as high as 26 mph.

    Low: 47 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Cloudy through mid morning, then gradual clearing, with a high near 53. North wind 14 to 16 mph, with gusts as high as 28 mph.

    High: 53 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 34. North wind 5 to 7 mph.

    Low: 34 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 58. Light and variable wind.

    High: 58 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Clear

  • Monday

    Monday: Areas of frost between 7am and 8am. Otherwise, sunny, with a high near 60.

    High: 60 °F

    Areas Frost
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 47. Northwest wind 11 to 13 mph, with gusts as high as 26 mph.
Saturday
Cloudy through mid morning, then gradual clearing, with a high near 53. North wind 14 to 16 mph, with gusts as high as 28 mph.
Saturday Night
Clear, with a low around 34. North wind 5 to 7 mph.
Sunday
Sunny, with a high near 58. Light and variable wind.
Sunday Night
Mostly clear, with a low around 36. Calm wind.
Monday
Areas of frost between 7am and 8am. Otherwise, sunny, with a high near 60.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
Mostly sunny, with a high near 66.
Tuesday Night
Mostly clear, with a low around 47.
Wednesday
Sunny, with a high near 65.
Wednesday Night
Partly cloudy, with a low around 47.
Thursday
Mostly sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 47.
Friday
Mostly sunny, with a high near 68.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Mercersburg PA
 39.87°N 77.93°W (Elev. 686 ft)
Last Update:
8:06 pm EDT Oct 16, 2026
Forecast Valid:
8pm EDT Oct 16, 2026-6pm EDT Oct 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation