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.

Fair

14°F

-10°C

Humidity 67%
Wind Speed SW 7 mph
Barometer 30.35 in (1031.7 mb)
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill4°F (-16°C)
Last update 21 Jan 3:54 am EST
Extended Forecast for

2 Miles NNW Keymar MD

  • Today

    Today: Increasing clouds, with a high near 37. Light south wind increasing to 9 to 14 mph in the morning. Winds could gust as high as 24 mph.

    High: 37 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Partly cloudy, with a low around 30. South wind around 7 mph, with gusts as high as 22 mph.

    Low: 30 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 45. West wind 6 to 15 mph, with gusts as high as 25 mph.

    High: 45 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 25. Calm wind.

    Low: 25 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 36. Light west wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 18 mph.

    High: 36 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 7.

    Low: 7 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 18.

    High: 18 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Snow likely, mainly after 1am. Cloudy, with a low around 10. Chance of precipitation is 70%.

    Low: 10 °F

    Snow Likely

  • Sunday

    Sunday: Snow. High near 18. Chance of precipitation is 80%.

    High: 18 °F

    Snow

Detailed Forecast

Today
Increasing clouds, with a high near 37. Light south wind increasing to 9 to 14 mph in the morning. Winds could gust as high as 24 mph.
Tonight
Partly cloudy, with a low around 30. South wind around 7 mph, with gusts as high as 22 mph.
Thursday
Mostly sunny, with a high near 45. West wind 6 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Partly cloudy, with a low around 25. Calm wind.
Friday
Partly sunny, with a high near 36. Light west wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 18 mph.
Friday Night
Mostly cloudy, with a low around 7.
Saturday
Mostly cloudy, with a high near 18.
Saturday Night
Snow likely, mainly after 1am. Cloudy, with a low around 10. Chance of precipitation is 70%.
Sunday
Snow. High near 18. Chance of precipitation is 80%.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 9. Chance of precipitation is 50%.
Monday
Mostly sunny, with a high near 24.
Monday Night
Mostly clear, with a low around 5.
Tuesday
Sunny, with a high near 25.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Keymar MD
 39.63°N 77.27°W (Elev. 410 ft)
Last Update:
3:53 am EST Jan 21, 2026
Forecast Valid:
4am EST Jan 21, 2026-6pm EST Jan 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation