National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Fire Weather Concerns in the Southern Plains and Southeast; Pacific System to Bring Unsettled Weather to the West Coast

Gusty winds and dry conditions will continue to bring elevated to critical fire weather conditions to the southern Plains and Southeast early this week. A Pacific storm system will bring low elevation rain and heavy high elevation mountain snow to northern and central California through early week, expanding into the Pacific Northwest, Great Basin, and southern California on Tuesday. Read More >

Hazardous Weather Conditions

Current conditions at

Hagerstown, Washington County Regional Airport (KHGR)

Lat: 39.71°NLon: 77.73°WElev: 702ft.

Mostly Cloudy

47°F

8°C

Humidity 42%
Wind Speed N 5 mph
Barometer 30.11 in (1021.0 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 19 Apr 10:53 pm 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

  • Tonight

    Tonight: A chance of showers, mainly between midnight and 2am. Mostly cloudy, with a low around 39. Calm wind becoming west around 5 mph after midnight. Chance of precipitation is 30%.

    Low: 39 °F

    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 51. Northwest wind 10 to 13 mph, with gusts as high as 24 mph.

    High: 51 °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 62. Calm wind becoming south around 6 mph in the afternoon.

    High: 62 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers, mainly after 2am. Partly cloudy, with a low around 45. Light southeast wind. Chance of precipitation is 40%.

    Low: 45 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 71. Chance of precipitation is 40%.

    High: 71 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of showers, mainly between midnight and 2am. Mostly cloudy, with a low around 39. Calm wind becoming west around 5 mph after midnight. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 51. Northwest wind 10 to 13 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 62. Calm wind becoming south around 6 mph in the afternoon.
Tuesday Night
A chance of showers, mainly after 2am. Partly cloudy, with a low around 45. Light southeast wind. Chance of precipitation is 40%.
Wednesday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 71. Chance of precipitation is 40%.
Wednesday Night
Mostly clear, with a low around 49.
Thursday
Sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 53.
Friday
Sunny, with a high near 81.
Friday Night
A chance of showers. Mostly cloudy, with a low around 56. Chance of precipitation is 40%.
Saturday
Showers likely. Mostly cloudy, with a high near 71. Chance of precipitation is 60%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 50. Chance of precipitation is 60%.
Sunday
A chance of showers. Partly sunny, with a high near 64. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Mercersburg PA
 39.78°N 77.94°W (Elev. 551 ft)
Last Update:
8:06 pm EDT Apr 19, 2026
Forecast Valid:
11pm EDT Apr 19, 2026-6pm EDT Apr 26, 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