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

Baltimore, Inner Harbor (KDMH)

Lat: 39.28°NLon: 76.62°WElev: 20ft.

22°F

-6°C

Humidity 35%
Wind Speed NA
Barometer 30.54 in (1034.2 mb)
Dewpoint -2°F (-19°C)
Visibility NA
Last update 20 Jan 11:53 pm EST
Extended Forecast for

Riderwood MD

  • Overnight

    Overnight: Mostly clear, with a low around 12. Calm wind.

    Low: 12 °F

    Mostly Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 36. Light southeast wind becoming south 9 to 14 mph in the morning. Winds could gust as high as 24 mph.

    High: 36 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 32. South wind 7 to 10 mph.

    Low: 32 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Mostly sunny, with a high near 46. Southwest wind 7 to 14 mph, with gusts as high as 25 mph.

    High: 46 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 26. West wind 5 to 7 mph becoming calm in the evening.

    Low: 26 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 37.

    High: 37 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 9.

    Low: 9 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 18.

    High: 18 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Snow, mainly after 1am. Low around 12. Chance of precipitation is 80%.

    Low: 12 °F

    Chance Snow
    then Snow

Detailed Forecast

Overnight
Mostly clear, with a low around 12. Calm wind.
Wednesday
Increasing clouds, with a high near 36. Light southeast wind becoming south 9 to 14 mph in the morning. Winds could gust as high as 24 mph.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 32. South wind 7 to 10 mph.
Thursday
Mostly sunny, with a high near 46. Southwest wind 7 to 14 mph, with gusts as high as 25 mph.
Thursday Night
Mostly cloudy, with a low around 26. West wind 5 to 7 mph becoming calm in the evening.
Friday
Mostly cloudy, with a high near 37.
Friday Night
Mostly cloudy, with a low around 9.
Saturday
Mostly cloudy, with a high near 18.
Saturday Night
Snow, mainly after 1am. Low around 12. Chance of precipitation is 80%.
Sunday
Snow. High near 18. Chance of precipitation is 90%.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 12. Chance of precipitation is 50%.
Monday
Mostly sunny, with a high near 24.
Monday Night
Mostly clear, with a low around 7.
Tuesday
Sunny, with a high near 24.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Riderwood MD
 39.4°N 76.62°W (Elev. 404 ft)
Last Update:
12:04 am EST Jan 21, 2026
Forecast Valid:
12am EST Jan 21, 2026-6pm EST Jan 27, 2026
 
Forecast Discussion
 
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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