Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Central Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, and thunderstorms to the Marianas Islands into Wednesday. Tropical Storm conditions are likely over Guam. Severe thunderstorms and heavy rain are likely across the Upper Mississippi Valley and Great Lakes region with potential for large to very large hail, damaging wind, and tornadoes through Tuesday. Read More >

Hazardous Weather Conditions

Current conditions at

Hagerstown, Washington County Regional Airport (KHGR)

Lat: 39.71°NLon: 77.73°WElev: 702ft.

Partly Cloudy

78°F

26°C

Humidity 45%
Wind Speed SW 12 G 21 mph
Barometer 30.06 in (1018.5 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 13 Apr 12:53 pm EDT
Extended Forecast for

4 Miles N Williamsport MD

  • This Afternoon

    This Afternoon: Scattered showers, mainly before 2pm.  Mostly cloudy, with a high near 76. Southwest wind around 17 mph, with gusts as high as 31 mph.  Chance of precipitation is 30%.

    High: 76 °F

    Scattered
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 59. West wind around 6 mph becoming calm  in the evening.

    Low: 59 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers, mainly after 2pm.  Mostly sunny, with a high near 87. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 21 mph.  Chance of precipitation is 30%.

    High: 87 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers, mainly before 8pm.  Partly cloudy, with a low around 65. Southwest wind around 6 mph becoming calm  in the evening.  Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers after 2pm.  Mostly sunny, with a high near 90. West wind 5 to 9 mph.  Chance of precipitation is 20%.

    High: 90 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers before 2am.  Mostly cloudy, with a low around 64. Chance of precipitation is 20%.

    Low: 64 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Partly sunny, with a high near 89.

    High: 89 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 64.

    Low: 64 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Scattered showers, mainly before 2pm. Mostly cloudy, with a high near 76. Southwest wind around 17 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.
Tonight
Partly cloudy, with a low around 59. West wind around 6 mph becoming calm in the evening.
Tuesday
A chance of showers, mainly after 2pm. Mostly sunny, with a high near 87. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 30%.
Tuesday Night
A chance of showers, mainly before 8pm. Partly cloudy, with a low around 65. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.
Wednesday
A slight chance of showers after 2pm. Mostly sunny, with a high near 90. West wind 5 to 9 mph. Chance of precipitation is 20%.
Wednesday Night
A slight chance of showers before 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 20%.
Thursday
Partly sunny, with a high near 89.
Thursday Night
Mostly cloudy, with a low around 64.
Friday
Mostly sunny, with a high near 84.
Friday Night
Mostly clear, with a low around 60.
Saturday
A chance of showers. Mostly sunny, with a high near 88. Chance of precipitation is 30%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 40%.
Sunday
A chance of showers. Partly sunny, with a high near 74. Chance of precipitation is 40%.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Williamsport MD
 39.66°N 77.82°W (Elev. 472 ft)
10:53 am EDT Apr 13, 2026
1pm EDT Apr 13, 2026-6pm EDT Apr 19, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database