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

St Marys County Airport (K2W6)

Lat: 38.32°NLon: 76.55°WElev: 144ft.

Fair

21°F

-6°C

Humidity 66%
Wind Speed Calm
Barometer 30.53 in
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Last update 21 Jan 7:55 am EST
Extended Forecast for

Leonardtown MD

  • Today

    Today: Sunny, with a high near 41. Southeast wind 5 to 13 mph becoming south in the morning. Winds could gust as high as 23 mph.

    High: 41 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 34. Southwest wind around 10 mph.

    Low: 34 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 53. West wind 7 to 10 mph, with gusts as high as 18 mph.

    High: 53 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 29. Light and variable wind.

    Low: 29 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of snow. Mostly cloudy, with a high near 40. Calm wind becoming northwest 5 to 7 mph in the morning. Chance of precipitation is 20%.

    High: 40 °F

    Slight Chance
    Snow

  • Friday Night

    Friday Night: A slight chance of snow after 1am. Mostly cloudy, with a low around 14. Chance of precipitation is 20%.

    Low: 14 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday

    Saturday: A chance of snow after 1pm. Cloudy, with a high near 21. Chance of precipitation is 40%.

    High: 21 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday Night

    Saturday Night: Snow. Low around 15. Chance of precipitation is 90%.

    Low: 15 °F

    Snow

  • Sunday

    Sunday: Snow. High near 25. Chance of precipitation is 90%.

    High: 25 °F

    Snow

Detailed Forecast

Today
Sunny, with a high near 41. Southeast wind 5 to 13 mph becoming south in the morning. Winds could gust as high as 23 mph.
Tonight
Partly cloudy, with a low around 34. Southwest wind around 10 mph.
Thursday
Sunny, with a high near 53. West wind 7 to 10 mph, with gusts as high as 18 mph.
Thursday Night
Partly cloudy, with a low around 29. Light and variable wind.
Friday
A slight chance of snow. Mostly cloudy, with a high near 40. Calm wind becoming northwest 5 to 7 mph in the morning. Chance of precipitation is 20%.
Friday Night
A slight chance of snow after 1am. Mostly cloudy, with a low around 14. Chance of precipitation is 20%.
Saturday
A chance of snow after 1pm. Cloudy, with a high near 21. Chance of precipitation is 40%.
Saturday Night
Snow. Low around 15. Chance of precipitation is 90%.
Sunday
Snow. High near 25. Chance of precipitation is 90%.
Sunday Night
Snow likely, mainly before 1am. Mostly cloudy, with a low around 17. Chance of precipitation is 60%.
Monday
A chance of snow. Mostly sunny, with a high near 28. Chance of precipitation is 30%.
Monday Night
Mostly clear, with a low around 8.
Tuesday
Sunny, with a high near 29.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Leonardtown MD
 38.29°N 76.64°W (Elev. 16 ft)
Last Update:
6:53 am EST Jan 21, 2026
Forecast Valid:
8am EST Jan 21, 2026-6pm EST Jan 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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