Major Winter Storm in the North-Central U.S.; Severe Weather from the Mid-South to Ohio Valley

A major winter storm will bring a swath of heavy snowfall, strong winds, blizzard conditions and freezing rain to the Northern Plains into the Great Lakes region. A line of storms will be capable of producing widespread damaging winds, tornadoes, and some large hail from the Mid-south to the Ohio Valley and the Southeast. Critical fire weather concerns shift to the southern Rockies and Plains. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Overcast

53°F

12°C

Humidity 51%
Wind Speed SE 14 G 20 mph
Barometer 30.20 in (1024.3 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 15 Mar 2:56 pm EDT
Extended Forecast for

Derwood MD

  • Tonight

    Tonight: Showers, with thunderstorms also possible after 5am.  Low around 53. Southeast wind 13 to 15 mph, with gusts as high as 28 mph.  Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 53 °F

    Showers

  • Monday

    Monday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. Some of the storms could produce heavy rainfall.  High near 71. South wind 14 to 18 mph, with gusts as high as 34 mph.  Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 71 °F

    Heavy Rain

  • Monday Night

    Monday Night: Rain showers, mixing with snow after 11pm, then gradually ending. The rain could be heavy at times.  Low around 28. West wind 14 to 17 mph, with gusts as high as 31 mph.  Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 28 °F

    Rain/Snow

  • Tuesday

    Tuesday: Mostly sunny, with a high near 39. West wind 11 to 15 mph, with gusts as high as 28 mph.

    High: 39 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 24. West wind 5 to 10 mph, with gusts as high as 18 mph.

    Low: 24 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 40.

    High: 40 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 51.

    High: 51 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Showers, with thunderstorms also possible after 5am. Low around 53. Southeast wind 13 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. Some of the storms could produce heavy rainfall. High near 71. South wind 14 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Monday Night
Rain showers, mixing with snow after 11pm, then gradually ending. The rain could be heavy at times. Low around 28. West wind 14 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Tuesday
Mostly sunny, with a high near 39. West wind 11 to 15 mph, with gusts as high as 28 mph.
Tuesday Night
Mostly clear, with a low around 24. West wind 5 to 10 mph, with gusts as high as 18 mph.
Wednesday
Partly sunny, with a high near 40.
Wednesday Night
Mostly cloudy, with a low around 29.
Thursday
Partly sunny, with a high near 51.
Thursday Night
Mostly cloudy, with a low around 37.
Friday
Mostly sunny, with a high near 58.
Friday Night
Mostly cloudy, with a low around 42.
Saturday
Mostly cloudy, with a high near 61.
Saturday Night
Partly cloudy, with a low around 40.
Sunday
Mostly sunny, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
Derwood MD
 39.12°N 77.13°W (Elev. 348 ft)
1:53 pm EDT Mar 15, 2026
3pm EDT Mar 15, 2026-6pm EDT Mar 22, 2026
 
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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