Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Current conditions at

Hagerstown, Washington County Regional Airport (KHGR)

Lat: 39.71°NLon: 77.73°WElev: 702ft.

Rain

49°F

9°C

Humidity 74%
Wind Speed NW 14 G 22 mph
Barometer 29.91 in (1013.6 mb)
Dewpoint 41°F (5°C)
Visibility 7.00 mi
Wind Chill44°F (7°C)
Last update 19 Apr 6:53 am EDT
Extended Forecast for

3 Miles SSW Mercersburg PA

Freeze Watch April 21, 12:00am until April 21, 09:00am
Click here for hazard details and duration
Freeze Watch
  • Today

    Today: Showers, mainly before 9am.  High near 56. Northwest wind 11 to 14 mph, with gusts as high as 29 mph.  Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 56 °F

    Showers then
    Mostly Sunny

  • Tonight

    Tonight: A slight chance of showers before 1am, then a slight chance of showers after 2am.  Increasing clouds, with a low around 38. Northwest wind around 6 mph becoming calm  in the evening.  Chance of precipitation is 20%.

    Low: 38 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 50. Northwest wind 9 to 11 mph, with gusts as high as 24 mph.

    High: 50 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 29. Northwest wind around 6 mph becoming calm  in the evening.

    Low: 29 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 60. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 60 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers, mainly after 2am.  Partly cloudy, with a low around 46. Chance of precipitation is 30%.

    Low: 46 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers.  Partly sunny, with a high near 71. Chance of precipitation is 40%.

    High: 71 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

Detailed Forecast

Today
Showers, mainly before 9am. High near 56. Northwest wind 11 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A slight chance of showers before 1am, then a slight chance of showers after 2am. Increasing clouds, with a low around 38. Northwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 50. Northwest wind 9 to 11 mph, with gusts as high as 24 mph.
Monday Night
Mostly clear, with a low around 29. Northwest wind around 6 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 60. Calm wind becoming south 5 to 7 mph in the afternoon.
Tuesday Night
A chance of showers, mainly after 2am. Partly cloudy, with a low around 46. Chance of precipitation is 30%.
Wednesday
A chance of showers. Partly sunny, with a high near 71. Chance of precipitation is 40%.
Wednesday Night
Partly cloudy, with a low around 48.
Thursday
Sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 52.
Friday
Sunny, with a high near 82.
Friday Night
A chance of showers. Partly cloudy, with a low around 55. Chance of precipitation is 30%.
Saturday
Showers likely. Partly sunny, with a high near 75. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Mercersburg PA
 39.78°N 77.94°W (Elev. 551 ft)
2:21 am EDT Apr 19, 2026
6am EDT Apr 19, 2026-6pm EDT Apr 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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