Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

St Marys County Airport (K2W6)

Lat: 38.32°NLon: 76.55°WElev: 144ft.

Mostly Cloudy

30°F

-1°C

Humidity 65%
Wind Speed Calm
Barometer 30.14 in
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Last update 19 Jan 10:35 pm EST
Extended Forecast for

Leonardtown MD

  • Tonight

    Tonight: Mostly clear, with a low around 18. Northwest wind 6 to 8 mph.

    Low: 18 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 33. West wind 6 to 10 mph.

    High: 33 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 18. Calm wind.

    Low: 18 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 42. Light southeast wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 20 mph.

    High: 42 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 33. Southwest wind around 8 mph, with gusts as high as 18 mph.

    Low: 33 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 27.

    Low: 27 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 40.

    High: 40 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of snow after 1am.  Mostly cloudy, with a low around 16. Chance of precipitation is 30%.

    Low: 16 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Tonight
Mostly clear, with a low around 18. Northwest wind 6 to 8 mph.
Tuesday
Sunny, with a high near 33. West wind 6 to 10 mph.
Tuesday Night
Clear, with a low around 18. Calm wind.
Wednesday
Sunny, with a high near 42. Light southeast wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 33. Southwest wind around 8 mph, with gusts as high as 18 mph.
Thursday
Mostly sunny, with a high near 51.
Thursday Night
Mostly clear, with a low around 27.
Friday
Partly sunny, with a high near 40.
Friday Night
A chance of snow after 1am. Mostly cloudy, with a low around 16. Chance of precipitation is 30%.
Saturday
A chance of snow. Mostly cloudy, with a high near 23. Chance of precipitation is 50%.
Saturday Night
Snow likely. Cloudy, with a low around 13. Chance of precipitation is 60%.
Sunday
A chance of snow. Mostly cloudy, with a high near 23. Chance of precipitation is 50%.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 11. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 26.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Leonardtown MD
 38.29°N 76.64°W (Elev. 16 ft)
9:53 pm EST Jan 19, 2026
10pm EST Jan 19, 2026-6pm EST Jan 26, 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