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

Heavy Rain and Flooding Concerns in Hawaii; Severe Weather this Weekend in the Plains; Pacific Storm in the West

A storm system near the Hawaiian Islands is expected to bring periods of heavy rainfall, strong winds, and isolated strong to severe thunderstorms through Friday. Several rounds of severe thunderstorms are forecast to impact parts of the Great Plains into the Midwest this weekend into next week. Moderate to heavy rainfall and high elevation snow is expected this weekend over California and Oregon. Read More >

Current conditions at

Hagerstown, Washington County Regional Airport (KHGR)

Lat: 39.71°NLon: 77.73°WElev: 702ft.

Fair

53°F

12°C

Humidity 43%
Wind Speed SE 9 mph
Barometer 30.36 in (1029.3 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 9 Apr 10:53 pm EDT
Extended Forecast for

3 Miles N Mercersburg PA

  • Tonight

    Tonight: Mostly clear, with a low around 39. Calm wind.

    Low: 39 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 75. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 75 °F

    Sunny

  • Friday Night

    Friday Night: A slight chance of showers before 2am. Increasing clouds, with a low around 49. Light and variable wind. Chance of precipitation is 20%.

    Low: 49 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 67. North wind around 6 mph.

    High: 67 °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 71.

    High: 71 °F

    Mostly Sunny

  • Sunday Night

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

    Low: 57 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 79.

    High: 79 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 60.

    Low: 60 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 39. Calm wind.
Friday
Sunny, with a high near 75. Calm wind becoming south 5 to 7 mph in the afternoon.
Friday Night
A slight chance of showers before 2am. Increasing clouds, with a low around 49. Light and variable wind. Chance of precipitation is 20%.
Saturday
Sunny, with a high near 67. North wind around 6 mph.
Saturday Night
Mostly clear, with a low around 41. Calm wind.
Sunday
Mostly sunny, with a high near 71.
Sunday Night
Mostly cloudy, with a low around 57.
Monday
Mostly cloudy, with a high near 79.
Monday Night
Mostly cloudy, with a low around 60.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
Partly cloudy, with a low around 63.
Wednesday
Partly sunny, with a high near 88.
Wednesday Night
Mostly cloudy, with a low around 63.
Thursday
Partly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Mercersburg PA
 39.87°N 77.9°W (Elev. 564 ft)
Last Update:
10:52 pm EDT Apr 9, 2026
Forecast Valid:
11pm EDT Apr 9, 2026-6pm EDT Apr 16, 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