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

Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

Hagerstown, Washington County Regional Airport (KHGR)

Lat: 39.71°NLon: 77.73°WElev: 702ft.

Overcast

39°F

4°C

Humidity 26%
Wind Speed S 15 mph
Barometer 30.12 in (1022.0 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 21 Jan 5:53 pm EST
Extended Forecast for

4 Miles N Williamsport MD

  • Tonight

    Tonight: A slight chance of snow before 7pm. Mostly cloudy, with a low around 32. South wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 32 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 46. Southwest wind 6 to 14 mph becoming west in the afternoon. Winds could gust as high as 25 mph.

    High: 46 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 25. Northwest wind around 5 mph becoming calm in the evening.

    Low: 25 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 38. Northwest wind 5 to 13 mph, with gusts as high as 23 mph.

    High: 38 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 8. Northwest wind around 10 mph, with gusts as high as 21 mph.

    Low: 8 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of snow after 1pm. Mostly cloudy, with a high near 18. Chance of precipitation is 30%.

    High: 18 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday Night

    Saturday Night: Snow. Low around 12. Chance of precipitation is 90%.

    Low: 12 °F

    Snow

  • Sunday

    Sunday: Snow. High near 19. Chance of precipitation is 90%.

    High: 19 °F

    Snow

  • Sunday Night

    Sunday Night: A chance of snow. Mostly cloudy, with a low around 11. Chance of precipitation is 50%.

    Low: 11 °F

    Chance Snow

Detailed Forecast

Tonight
A slight chance of snow before 7pm. Mostly cloudy, with a low around 32. South wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 46. Southwest wind 6 to 14 mph becoming west in the afternoon. Winds could gust as high as 25 mph.
Thursday Night
Partly cloudy, with a low around 25. Northwest wind around 5 mph becoming calm in the evening.
Friday
Partly sunny, with a high near 38. Northwest wind 5 to 13 mph, with gusts as high as 23 mph.
Friday Night
Mostly cloudy, with a low around 8. Northwest wind around 10 mph, with gusts as high as 21 mph.
Saturday
A chance of snow after 1pm. Mostly cloudy, with a high near 18. Chance of precipitation is 30%.
Saturday Night
Snow. Low around 12. Chance of precipitation is 90%.
Sunday
Snow. High near 19. Chance of precipitation is 90%.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 11. Chance of precipitation is 50%.
Monday
Partly sunny, with a high near 24.
Monday Night
Partly cloudy, with a low around 3.
Tuesday
Mostly sunny, with a high near 24.
Tuesday Night
Partly cloudy, with a low around 6.
Wednesday
Partly sunny, with a high near 29.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Williamsport MD
 39.66°N 77.82°W (Elev. 472 ft)
Last Update:
3:53 pm EST Jan 21, 2026
Forecast Valid:
6pm EST Jan 21, 2026-6pm EST Jan 28, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation