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

56°F

13°C

Humidity 94%
Wind Speed Calm
Barometer 29.63 in
Dewpoint 55°F (13°C)
Visibility 7.00 mi
Last update 12 Mar 12:15 am EDT
Extended Forecast for

Glen Arm MD

  • Overnight

    Overnight: A chance of rain, mainly after 5am. Mostly cloudy, with a low around 42. South wind 5 to 9 mph becoming west. Chance of precipitation is 30%.

    Low: 42 °F

    Chance Rain

  • Thursday

    Thursday: Rain before 10am, then rain, possibly mixed with snow. Temperature falling to around 39 by 11am. Breezy, with a northwest wind 13 to 21 mph, with gusts as high as 37 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 45 °F⇓

    Rain/Snow and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 29. Northwest wind 5 to 9 mph becoming light west after midnight.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 48. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 32 mph.

    High: 48 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 38. South wind 9 to 13 mph, with gusts as high as 23 mph.

    Low: 38 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 37 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 55.

    High: 55 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 70%.

    Low: 49 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

Overnight
A chance of rain, mainly after 5am. Mostly cloudy, with a low around 42. South wind 5 to 9 mph becoming west. Chance of precipitation is 30%.
Thursday
Rain before 10am, then rain, possibly mixed with snow. Temperature falling to around 39 by 11am. Breezy, with a northwest wind 13 to 21 mph, with gusts as high as 37 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Thursday Night
Mostly clear, with a low around 29. Northwest wind 5 to 9 mph becoming light west after midnight.
Friday
Increasing clouds, with a high near 48. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 32 mph.
Friday Night
Mostly clear, with a low around 38. South wind 9 to 13 mph, with gusts as high as 23 mph.
Saturday
Mostly sunny, with a high near 53.
Saturday Night
Mostly cloudy, with a low around 37.
Sunday
Mostly cloudy, with a high near 55.
Sunday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 70%.
Monday
Showers. High near 65. Chance of precipitation is 90%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.
Tuesday
Mostly sunny, with a high near 38.
Tuesday Night
Mostly clear, with a low around 23.
Wednesday
Mostly sunny, with a high near 40.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Glen Arm MD
 39.46°N 76.52°W (Elev. 407 ft)
Last Update:
11:56 pm EDT Mar 11, 2026
Forecast Valid:
12am EDT Mar 12, 2026-6pm EDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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