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

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair and Breezy

28°F

-2°C

Humidity 63%
Wind Speed W 21 G 28 mph
Barometer 29.57 in (1003.0 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 15 Jan 6:56 am EST
Extended Forecast for

Potomac MD

  • Today

    Today: Mostly sunny, with a high near 32. West wind 11 to 17 mph, with gusts as high as 30 mph.

    High: 32 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 20. West wind 7 to 14 mph, with gusts as high as 31 mph.

    Low: 20 °F

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 36. South wind 7 to 10 mph, with gusts as high as 18 mph.

    High: 36 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 31. South wind 6 to 9 mph, with gusts as high as 18 mph.

    Low: 31 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of snow, mixing with rain after 10am, then gradually ending. Mostly cloudy, with a high near 45. Southwest wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.

    High: 45 °F

    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: A slight chance of rain and snow between 1am and 4am, then a slight chance of snow after 4am. Mostly cloudy, with a low around 26. Chance of precipitation is 20%.

    Low: 26 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Sunday

    Sunday: A chance of snow before 1pm. Mostly cloudy, with a high near 31. Chance of precipitation is 30%.

    High: 31 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 18.

    Low: 18 °F

    Mostly Clear

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 34.

    High: 34 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 32. West wind 11 to 17 mph, with gusts as high as 30 mph.
Tonight
Mostly clear, with a low around 20. West wind 7 to 14 mph, with gusts as high as 31 mph.
Friday
Increasing clouds, with a high near 36. South wind 7 to 10 mph, with gusts as high as 18 mph.
Friday Night
Mostly cloudy, with a low around 31. South wind 6 to 9 mph, with gusts as high as 18 mph.
Saturday
A chance of snow, mixing with rain after 10am, then gradually ending. Mostly cloudy, with a high near 45. Southwest wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.
Saturday Night
A slight chance of rain and snow between 1am and 4am, then a slight chance of snow after 4am. Mostly cloudy, with a low around 26. Chance of precipitation is 20%.
Sunday
A chance of snow before 1pm. Mostly cloudy, with a high near 31. Chance of precipitation is 30%.
Sunday Night
Mostly clear, with a low around 18.
M.L.King Day
Sunny, with a high near 34.
Monday Night
Partly cloudy, with a low around 14.
Tuesday
Sunny, with a high near 25.
Tuesday Night
Mostly clear, with a low around 11.
Wednesday
Mostly sunny, with a high near 31.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Potomac MD
 39.02°N 77.2°W (Elev. 381 ft)
Last Update:
6:53 am EST Jan 15, 2026
Forecast Valid:
7am EST Jan 15, 2026-6pm EST Jan 21, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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