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.

Mostly Cloudy

28°F

-2°C

Humidity 49%
Wind Speed NW 18 G 29 mph
Barometer 29.65 in (1006.0 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill15°F (-9°C)
Last update 15 Jan 9:56 am EST
Extended Forecast for

Dayton MD

  • Today

    Today: Partly sunny, with a high near 30. Breezy, with a west wind 18 to 20 mph, with gusts as high as 31 mph.

    High: 30 °F

    Partly Sunny
    and Breezy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 19. West wind 9 to 17 mph, with gusts as high as 34 mph.

    Low: 19 °F

    Decreasing
    Clouds

  • Friday

    Friday: Increasing clouds, with a high near 35. West wind around 9 mph becoming south in the afternoon. Winds could gust as high as 18 mph.

    High: 35 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 29. South wind 6 to 8 mph.

    Low: 29 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of snow before 10am, then a chance of rain and snow between 10am and 1pm, then a slight chance of rain after 1pm. Mostly cloudy, with a high near 43. South wind 6 to 9 mph. Chance of precipitation is 40%.

    High: 43 °F

    Chance
    Rain/Snow

  • Saturday Night

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

    Low: 26 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: A chance of snow before 1pm. Mostly cloudy, with a high near 29. Chance of precipitation is 30%.

    High: 29 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 17.

    Low: 17 °F

    Mostly Clear

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 32.

    High: 32 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 30. Breezy, with a west wind 18 to 20 mph, with gusts as high as 31 mph.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 19. West wind 9 to 17 mph, with gusts as high as 34 mph.
Friday
Increasing clouds, with a high near 35. West wind around 9 mph becoming south in the afternoon. Winds could gust as high as 18 mph.
Friday Night
Mostly cloudy, with a low around 29. South wind 6 to 8 mph.
Saturday
A chance of snow before 10am, then a chance of rain and snow between 10am and 1pm, then a slight chance of rain after 1pm. Mostly cloudy, with a high near 43. South wind 6 to 9 mph. Chance of precipitation is 40%.
Saturday Night
A slight chance of snow after 1am. 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 29. Chance of precipitation is 30%.
Sunday Night
Mostly clear, with a low around 17.
M.L.King Day
Sunny, with a high near 32.
Monday Night
Partly cloudy, with a low around 13.
Tuesday
Sunny, with a high near 22.
Tuesday Night
Mostly clear, with a low around 10.
Wednesday
Mostly sunny, with a high near 29.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Dayton MD
 39.24°N 76.99°W (Elev. 568 ft)
Last Update:
9:53 am EST Jan 15, 2026
Forecast Valid:
9am 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