National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Severe Thunderstorm and Flash Flood Threats Continue into the Weekend

Severe thunderstorms are expected from the southern Plains to the Midwest through Friday night. Severe storm hazards may include large hail, severe winds, and tornadoes, some of which may be strong. There will be another chance for severe thunderstorms on Saturday for portions of Texas, the Lower Mississippi Valley, and the Ohio Valley. Storms could result in locally heavy rain and flash flooding. Read More >

Hazardous Weather Conditions

Current conditions at

Baltimore / Martin (KMTN)

Lat: 39.33°NLon: 76.42°WElev: 23ft.

Fog/Mist

41°F

5°C

Humidity 93%
Wind Speed Calm
Barometer 30.30 in
Dewpoint 39°F (4°C)
Visibility 2.50 mi
Last update 7 Mar 5:50 am EST
Extended Forecast for

Glen Arm MD

  • Today

    Today: Areas of fog. Otherwise, mostly cloudy, with a high near 51. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 51 °F

    Areas Fog

  • Tonight

    Tonight: Showers and thunderstorms likely. Patchy fog. Otherwise, mostly cloudy, with a temperature rising to around 59 by midnight. South wind 5 to 8 mph becoming southwest after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 51 °F⇑

    Showers
    Likely and
    Patchy Fog

  • Sunday

    Sunday: A chance of showers. Mostly cloudy, with a high near 69. West wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 50%.

    High: 69 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 42. Light west wind.

    Low: 42 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 68. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 68 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain. Mostly cloudy, with a high near 76. Chance of precipitation is 40%.

    High: 76 °F

    Chance Rain

Detailed Forecast

Today
Areas of fog. Otherwise, mostly cloudy, with a high near 51. Calm wind becoming south 5 to 7 mph in the afternoon.
Tonight
Showers and thunderstorms likely. Patchy fog. Otherwise, mostly cloudy, with a temperature rising to around 59 by midnight. South wind 5 to 8 mph becoming southwest after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers. Mostly cloudy, with a high near 69. West wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 50%.
Sunday Night
Mostly clear, with a low around 42. Light west wind.
Monday
Sunny, with a high near 68. Calm wind becoming south 5 to 7 mph in the afternoon.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Sunny, with a high near 74.
Tuesday Night
Mostly cloudy, with a low around 54.
Wednesday
A chance of rain. Mostly cloudy, with a high near 76. Chance of precipitation is 40%.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 46. Chance of precipitation is 70%.
Thursday
A chance of rain. Partly sunny, with a high near 60. Chance of precipitation is 40%.
Thursday Night
Partly cloudy, with a low around 30.
Friday
Partly sunny, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Glen Arm MD
 39.44°N 76.53°W (Elev. 312 ft)
Last Update:
6:53 am EST Mar 7, 2026
Forecast Valid:
7am EST Mar 7, 2026-6pm EDT Mar 13, 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