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Hazardous Weather Conditions

Current conditions at

Hagerstown, Washington County Regional Airport (KHGR)

Lat: 39.71°NLon: 77.73°WElev: 702ft.

Fair

52°F

11°C

Humidity 47%
Wind Speed Calm
Barometer 30.07 in (1019.3 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 16 Oct 9:53 pm EDT
Extended Forecast for

South Mountain PA

Frost Advisory October 17, 02:00am until October 17, 09:00am
Click here for hazard details and duration
Frost Advisory

  • Tonight

    Tonight: Areas of frost after 4am. Otherwise, clear, with a low around 34. North wind around 6 mph.

    Low: 34 °F

    Clear then
    Areas Frost

  • Friday

    Friday: Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 58. Northwest wind around 6 mph.

    High: 58 °F

    Frost then
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 41. Calm wind.

    Low: 41 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 65. Calm wind becoming south around 6 mph in the afternoon.

    High: 65 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 47. South wind around 6 mph.

    Low: 47 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 69. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 69 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely, mainly before 2am. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.

    Low: 45 °F

    Showers
    Likely

  • Monday

    Monday: A chance of showers before 8am. Mostly sunny, with a high near 58. Chance of precipitation is 30%.

    High: 58 °F

    Chance
    Showers then
    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Tonight
Areas of frost after 4am. Otherwise, clear, with a low around 34. North wind around 6 mph.
Friday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 58. Northwest wind around 6 mph.
Friday Night
Mostly clear, with a low around 41. Calm wind.
Saturday
Partly sunny, with a high near 65. Calm wind becoming south around 6 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 47. South wind around 6 mph.
Sunday
A slight chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 69. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers likely, mainly before 2am. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.
Monday
A chance of showers before 8am. Mostly sunny, with a high near 58. Chance of precipitation is 30%.
Monday Night
Mostly clear, with a low around 40.
Tuesday
A chance of showers after 2pm. Mostly sunny, with a high near 62. Chance of precipitation is 30%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 42. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 53.
Wednesday Night
Partly cloudy, with a low around 39.
Thursday
Mostly sunny, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Mountain PA
 39.85°N 77.5°W (Elev. 1627 ft)
Last Update:
8:06 pm EDT Oct 16, 2025
Forecast Valid:
10pm EDT Oct 16, 2025-6pm EDT Oct 23, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation