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.

Light Rain

52°F

11°C

Humidity 72%
Wind Speed N 3 mph
Barometer 29.91 in (1013.7 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 1 May 10:53 pm EDT
Extended Forecast for

Greencastle PA

Frost Advisory May 2, 12:00am until May 2, 09:00am
Click here for hazard details and duration
Frost Advisory

  • Tonight

    Tonight: Mostly cloudy, with a low around 39. West wind 3 to 6 mph.

    Low: 39 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 59. Northwest wind around 7 mph.

    High: 59 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Areas of frost after 4am. Otherwise, partly cloudy, with a low around 36. Northwest wind around 6 mph.

    Low: 36 °F

    Mostly Cloudy
    then Areas
    Frost

  • Sunday

    Sunday: Areas of frost before 7am. Otherwise, sunny, with a high near 61. Northwest wind 7 to 11 mph, with gusts as high as 21 mph.

    High: 61 °F

    Areas Frost
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 43. Light and variable wind.

    Low: 43 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 2am. Mostly cloudy, with a low around 59. Chance of precipitation is 50%.

    Low: 59 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 39. West wind 3 to 6 mph.
Saturday
Partly sunny, with a high near 59. Northwest wind around 7 mph.
Saturday Night
Areas of frost after 4am. Otherwise, partly cloudy, with a low around 36. Northwest wind around 6 mph.
Sunday
Areas of frost before 7am. Otherwise, sunny, with a high near 61. Northwest wind 7 to 11 mph, with gusts as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 43. Light and variable wind.
Monday
Mostly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
A chance of showers after 2am. Mostly cloudy, with a low around 59. Chance of precipitation is 50%.
Wednesday
Showers likely, mainly after 8am. Mostly cloudy, with a high near 72. Chance of precipitation is 70%.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 51. Chance of precipitation is 70%.
Thursday
Showers likely. Mostly cloudy, with a high near 63. Chance of precipitation is 70%.
Thursday Night
A chance of showers. Partly cloudy, with a low around 42. Chance of precipitation is 30%.
Friday
A chance of showers. Mostly sunny, with a high near 64. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Greencastle PA
 39.78°N 77.74°W (Elev. 548 ft)
Last Update:
8:06 pm EDT May 1, 2026
Forecast Valid:
11pm EDT May 1, 2026-6pm EDT May 8, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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