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

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

22°F

-6°C

Humidity 89%
Wind Speed Calm
Barometer 30.12 in (1021.9 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Last update 13 Jan 5:56 am EST
Extended Forecast for

Damascus MD

  • Today

    Today: Mostly sunny, with a high near 48. Light and variable wind becoming south 5 to 10 mph in the morning.

    High: 48 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of rain after 4am. Mostly cloudy, with a low around 39. Southwest wind 7 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    Low: 39 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: A chance of rain, mainly after 7am. Cloudy, with a high near 47. Southwest wind 5 to 7 mph. Chance of precipitation is 50%.

    High: 47 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Rain likely before 1am, then a chance of rain and snow between 1am and 4am, then a chance of snow after 4am. Mostly cloudy, with a low around 23. Blustery, with a light and variable wind becoming northwest 15 to 20 mph in the evening. Winds could gust as high as 31 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 23 °F

    Rain Likely
    then
    Rain/Snow
    Likely and
    Blustery

  • Thursday

    Thursday: Partly sunny, with a high near 27. Blustery, with a northwest wind around 21 mph, with gusts as high as 32 mph.

    High: 27 °F

    Partly Sunny
    and Blustery

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 15.

    Low: 15 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 48. Light and variable wind becoming south 5 to 10 mph in the morning.
Tonight
A slight chance of rain after 4am. Mostly cloudy, with a low around 39. Southwest wind 7 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Wednesday
A chance of rain, mainly after 7am. Cloudy, with a high near 47. Southwest wind 5 to 7 mph. Chance of precipitation is 50%.
Wednesday Night
Rain likely before 1am, then a chance of rain and snow between 1am and 4am, then a chance of snow after 4am. Mostly cloudy, with a low around 23. Blustery, with a light and variable wind becoming northwest 15 to 20 mph in the evening. Winds could gust as high as 31 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday
Partly sunny, with a high near 27. Blustery, with a northwest wind around 21 mph, with gusts as high as 32 mph.
Thursday Night
Partly cloudy, with a low around 15.
Friday
Mostly sunny, with a high near 31.
Friday Night
Partly cloudy, with a low around 25.
Saturday
Mostly sunny, with a high near 39.
Saturday Night
Mostly cloudy, with a low around 22.
Sunday
Partly 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 28.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Damascus MD
 39.28°N 77.19°W (Elev. 751 ft)
Last Update:
5:53 am EST Jan 13, 2026
Forecast Valid:
6am EST Jan 13, 2026-6pm EST Jan 19, 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