The Work Week will Begin with Unsettled Weather from the Southern Plains to the Great Lakes

Unsettled weather is forecast to continue through the first half of the work week from the Southern Plains to the Great Lakes as a frontal system moves through. Isolated to scattered severe thunderstorms and flash flooding will be possible each day. Meanwhile, scattered showers and thunderstorms are expected across the Southwest and California, with isolated flash flooding possible. Read More >

Current conditions at

Hagerstown, Washington County Regional Airport (KHGR)

Lat: 39.71°NLon: 77.73°WElev: 702ft.

Overcast

66°F

19°C

Humidity 81%
Wind Speed SE 9 mph
Barometer 30.15 in (1021.6 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 22 Sep 1:53 am EDT
Extended Forecast for

Greencastle PA

  • Overnight

    Overnight: Cloudy, with a low around 59. South wind around 6 mph.

    Low: 59 °F

    Cloudy

  • Monday

    Monday: Cloudy, then gradually becoming mostly sunny, with a high near 83. South wind 6 to 9 mph.

    High: 83 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms.  Partly cloudy, with a low around 63. South wind 3 to 6 mph.  Chance of precipitation is 20%.

    Low: 63 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm.  Mostly cloudy, with a high near 82. Calm wind becoming southwest 5 to 7 mph in the morning.  Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 82 °F

    Chance
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely before 11pm, then a chance of showers.  Mostly cloudy, with a low around 63. Southwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Showers
    Likely then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, mainly after 2pm.  Mostly cloudy, with a high near 80. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 80 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 2am.  Cloudy, with a low around 65. Chance of precipitation is 60%.

    Low: 65 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely, then showers and possibly a thunderstorm after 2pm.  High near 79. Chance of precipitation is 80%.

    High: 79 °F

    Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 8pm, then showers likely.  Low around 64. Chance of precipitation is 80%.

    Low: 64 °F

    Showers

Detailed Forecast

Overnight
Cloudy, with a low around 59. South wind around 6 mph.
Monday
Cloudy, then gradually becoming mostly sunny, with a high near 83. South wind 6 to 9 mph.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 63. South wind 3 to 6 mph. Chance of precipitation is 20%.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 82. Calm wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
Showers and thunderstorms likely before 11pm, then a chance of showers. Mostly cloudy, with a low around 63. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 80. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Showers likely, mainly after 2am. Cloudy, with a low around 65. Chance of precipitation is 60%.
Thursday
Showers likely, then showers and possibly a thunderstorm after 2pm. High near 79. Chance of precipitation is 80%.
Thursday Night
Showers and possibly a thunderstorm before 8pm, then showers likely. Low around 64. Chance of precipitation is 80%.
Friday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 79. Chance of precipitation is 60%.
Friday Night
Showers likely. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Saturday
A chance of showers. Partly sunny, with a high near 79. Chance of precipitation is 50%.
Saturday Night
A chance of showers. Partly cloudy, with a low around 59. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
Greencastle PA
 39.78°N 77.74°W (Elev. 548 ft)
2:36 am EDT Sep 22, 2025
2am EDT Sep 22, 2025-6pm EDT Sep 28, 2025
 
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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