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.

Fair

47°F

8°C

Humidity 39%
Wind Speed S 9 mph
Barometer 29.67 in (1005.8 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 14 Jan 1:53 am EST
Extended Forecast for

Greencastle PA

  • Overnight

    Overnight: Cloudy, with a low around 42. South wind around 6 mph.

    Low: 42 °F

    Cloudy

  • Wednesday

    Wednesday: Rain. High near 48. South wind 3 to 6 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 48 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain likely before 1am, then a chance of rain and snow between 1am and 2am, then a chance of snow after 2am. Cloudy, with a low around 23. Light west wind becoming northwest 8 to 13 mph in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 23 °F

    Rain Likely
    then Chance
    Rain/Snow

  • Thursday

    Thursday: Partly sunny, with a high near 27. West wind 14 to 16 mph, with gusts as high as 28 mph.

    High: 27 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 17. West wind 8 to 13 mph, with gusts as high as 24 mph.

    Low: 17 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of snow showers after 1pm. Partly sunny, with a high near 33. Chance of precipitation is 20%.

    High: 33 °F

    Mostly Sunny
    then Slight
    Chance Snow
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of snow showers before 1pm, then a chance of rain and snow showers. Partly sunny, with a high near 41. Chance of precipitation is 30%.

    High: 41 °F

    Chance Snow
    Showers then
    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Cloudy, with a low around 42. South wind around 6 mph.
Wednesday
Rain. High near 48. South wind 3 to 6 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Rain likely before 1am, then a chance of rain and snow between 1am and 2am, then a chance of snow after 2am. Cloudy, with a low around 23. Light west wind becoming northwest 8 to 13 mph in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday
Partly sunny, with a high near 27. West wind 14 to 16 mph, with gusts as high as 28 mph.
Thursday Night
Partly cloudy, with a low around 17. West wind 8 to 13 mph, with gusts as high as 24 mph.
Friday
A slight chance of snow showers after 1pm. Partly sunny, with a high near 33. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, with a low around 26.
Saturday
A chance of snow showers before 1pm, then a chance of rain and snow showers. Partly sunny, with a high near 41. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 20.
Sunday
Mostly sunny, with a high near 30.
Sunday Night
Partly cloudy, with a low around 16.
M.L.King Day
Partly sunny, with a high near 31.
Monday Night
Partly cloudy, with a low around 14.
Tuesday
Mostly sunny, with a high near 25.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Greencastle PA
 39.78°N 77.74°W (Elev. 548 ft)
Last Update:
2:26 am EST Jan 14, 2026
Forecast Valid:
2am EST Jan 14, 2026-6pm EST Jan 20, 2026
 
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Additional Resources

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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