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

Baltimore / Martin (KMTN)

Lat: 39.33°NLon: 76.42°WElev: 23ft.

Fair

43°F

6°C

Humidity 71%
Wind Speed SW 5 mph
Barometer 29.81 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 13 Jan 8:45 pm EST
Extended Forecast for

Glen Arm MD

  • Tonight

    Tonight: Cloudy, with a low around 38. Southwest wind 5 to 8 mph, with gusts as high as 18 mph.

    Low: 38 °F

    Cloudy

  • Wednesday

    Wednesday: A chance of rain, mainly after 3pm. Cloudy, with a high near 50. Southwest wind around 6 mph. Chance of precipitation is 30%.

    High: 50 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Rain and snow likely before 1am, then a chance of rain between 1am and 4am, then a chance of snow after 4am. Mostly cloudy, with a low around 24. Light and variable wind becoming northwest 5 to 10 mph after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 24 °F

    Rain/Snow
    Likely

  • Thursday

    Thursday: A chance of snow before 7am. Mostly sunny, with a high near 29. Northwest wind 11 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.

    High: 29 °F

    Chance Snow
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 16. West wind 7 to 11 mph, with gusts as high as 21 mph.

    Low: 16 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 33.

    High: 33 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Cloudy, with a low around 38. Southwest wind 5 to 8 mph, with gusts as high as 18 mph.
Wednesday
A chance of rain, mainly after 3pm. Cloudy, with a high near 50. Southwest wind around 6 mph. Chance of precipitation is 30%.
Wednesday Night
Rain and snow likely before 1am, then a chance of rain between 1am and 4am, then a chance of snow after 4am. Mostly cloudy, with a low around 24. Light and variable wind becoming northwest 5 to 10 mph after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Thursday
A chance of snow before 7am. Mostly sunny, with a high near 29. Northwest wind 11 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Thursday Night
Mostly clear, with a low around 16. West wind 7 to 11 mph, with gusts as high as 21 mph.
Friday
Mostly sunny, with a high near 33.
Friday Night
Partly cloudy, with a low around 27.
Saturday
Mostly sunny, with a high near 42.
Saturday Night
Mostly cloudy, with a low around 22.
Sunday
Mostly sunny, with a high near 30.
Sunday Night
Partly cloudy, with a low around 17.
M.L.King Day
Mostly sunny, with a high near 31.
Monday Night
Partly cloudy, with a low around 16.
Tuesday
Mostly sunny, with a high near 26.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Glen Arm MD
 39.46°N 76.49°W (Elev. 328 ft)
Last Update:
8:28 pm EST Jan 13, 2026
Forecast Valid:
8pm EST Jan 13, 2026-6pm EST Jan 20, 2026
 
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Additional Resources

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Chance of Precipitation