Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Hazardous Weather Conditions

Current conditions at

Hagerstown, Washington County Regional Airport (KHGR)

Lat: 39.71°NLon: 77.73°WElev: 702ft.

Fair

71°F

22°C

Humidity 38%
Wind Speed S 9 mph
Barometer 30.20 in (1023.5 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 10 Apr 1:53 pm EDT
Extended Forecast for

3 Miles SSW Mercersburg PA

  • This Afternoon

    This Afternoon: Sunny, with a high near 77. South wind around 7 mph.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: A slight chance of showers between midnight and 1am.  Increasing clouds, with a low around 49. Light and variable wind becoming northwest around 6 mph after midnight.  Chance of precipitation is 20%.

    Low: 49 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 66. Northwest wind 6 to 8 mph.

    High: 66 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 41. Calm wind.

    Low: 41 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 70. Light and variable wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 20 mph.

    High: 70 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 57.

    Low: 57 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of showers after 2pm.  Mostly cloudy, with a high near 79. Chance of precipitation is 30%.

    High: 79 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers before 8pm.  Partly cloudy, with a low around 60. Chance of precipitation is 30%.

    Low: 60 °F

    Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers after 2pm.  Mostly sunny, with a high near 85. Chance of precipitation is 30%.

    High: 85 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 77. South wind around 7 mph.
Tonight
A slight chance of showers between midnight and 1am. Increasing clouds, with a low around 49. Light and variable wind becoming northwest around 6 mph after midnight. Chance of precipitation is 20%.
Saturday
Sunny, with a high near 66. Northwest wind 6 to 8 mph.
Saturday Night
Mostly clear, with a low around 41. Calm wind.
Sunday
Mostly sunny, with a high near 70. Light and variable wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 20 mph.
Sunday Night
Mostly cloudy, with a low around 57.
Monday
A chance of showers after 2pm. Mostly cloudy, with a high near 79. Chance of precipitation is 30%.
Monday Night
A chance of showers before 8pm. Partly cloudy, with a low around 60. Chance of precipitation is 30%.
Tuesday
A chance of showers after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
Tuesday Night
A chance of showers before 8pm. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 89.
Wednesday Night
Mostly cloudy, with a low around 64.
Thursday
Partly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Mercersburg PA
 39.78°N 77.94°W (Elev. 551 ft)
1:52 pm EDT Apr 10, 2026
2pm EDT Apr 10, 2026-6pm EDT Apr 16, 2026
 
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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