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

Camp David (KRSP)

Lat: 39.65°NLon: 77.47°WElev: 1841ft.

Overcast

29°F

-2°C

Humidity 66%
Wind Speed S 13 G 26 mph
Barometer 30.11 in (1022.9 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 21 Jan 2:54 pm EST
Extended Forecast for

Thurmont MD

  • Tonight

    Tonight: Mostly cloudy, with a low around 32. South wind 6 to 8 mph, with gusts as high as 24 mph.

    Low: 32 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 45. West wind 6 to 11 mph, with gusts as high as 23 mph.

    High: 45 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 26. Light west wind.

    Low: 26 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 37. Light west wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 22 mph.

    High: 37 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 9. Northwest wind around 8 mph, with gusts as high as 23 mph.

    Low: 9 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of snow after 1pm. Mostly cloudy, with a high near 17. Chance of precipitation is 20%.

    High: 17 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday Night

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

    Low: 12 °F

    Snow

  • Sunday

    Sunday: Snow. High near 18. Chance of precipitation is 90%.

    High: 18 °F

    Snow

  • Sunday Night

    Sunday Night: Snow likely, mainly before 1am. Mostly cloudy, with a low around 12. Chance of precipitation is 60%.

    Low: 12 °F

    Snow Likely

Detailed Forecast

Tonight
Mostly cloudy, with a low around 32. South wind 6 to 8 mph, with gusts as high as 24 mph.
Thursday
Mostly sunny, with a high near 45. West wind 6 to 11 mph, with gusts as high as 23 mph.
Thursday Night
Partly cloudy, with a low around 26. Light west wind.
Friday
Partly sunny, with a high near 37. Light west wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 22 mph.
Friday Night
Mostly cloudy, with a low around 9. Northwest wind around 8 mph, with gusts as high as 23 mph.
Saturday
A slight chance of snow after 1pm. Mostly cloudy, with a high near 17. Chance of precipitation is 20%.
Saturday Night
Snow. Low around 12. Chance of precipitation is 90%.
Sunday
Snow. High near 18. Chance of precipitation is 90%.
Sunday Night
Snow likely, mainly before 1am. Mostly cloudy, with a low around 12. Chance of precipitation is 60%.
Monday
Partly sunny, with a high near 22.
Monday Night
Partly cloudy, with a low around 5.
Tuesday
Sunny, with a high near 22.
Tuesday Night
Partly cloudy, with a low around 7.
Wednesday
Partly sunny, with a high near 27.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Thurmont MD
 39.62°N 77.42°W (Elev. 600 ft)
Last Update:
12:54 pm EST Jan 21, 2026
Forecast Valid:
3pm EST Jan 21, 2026-6pm EST Jan 28, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation