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

29°F

-2°C

Humidity 72%
Wind Speed NW 3 mph
Barometer 30.37 in (1030.4 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Last update 24 Mar 5:56 am EDT
Extended Forecast for

Dayton MD

  • Today

    Today: Sunny, with a high near 49. North wind 5 to 7 mph becoming calm in the afternoon.

    High: 49 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 35. Calm wind.

    Low: 35 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 56. Light south wind increasing to 5 to 9 mph in the morning.

    High: 56 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 46. Southeast wind around 7 mph.

    Low: 46 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 71. Southwest wind 7 to 11 mph, with gusts as high as 20 mph.

    High: 71 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A chance of rain, then rain likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 52. Chance of precipitation is 70%.

    Low: 52 °F

    Chance Rain
    then Rain
    Likely

  • Friday

    Friday: Rain likely, mainly before 2pm. Mostly cloudy, with a high near 60. Chance of precipitation is 60%.

    High: 60 °F

    Rain Likely

  • Friday Night

    Friday Night: A chance of rain before 8pm. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.

    Low: 28 °F

    Chance Rain
    then Partly
    Cloudy

  • Saturday

    Saturday: Sunny, with a high near 47.

    High: 47 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 49. North wind 5 to 7 mph becoming calm in the afternoon.
Tonight
Increasing clouds, with a low around 35. Calm wind.
Wednesday
Partly sunny, with a high near 56. Light south wind increasing to 5 to 9 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 46. Southeast wind around 7 mph.
Thursday
Partly sunny, with a high near 71. Southwest wind 7 to 11 mph, with gusts as high as 20 mph.
Thursday Night
A chance of rain, then rain likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 52. Chance of precipitation is 70%.
Friday
Rain likely, mainly before 2pm. Mostly cloudy, with a high near 60. Chance of precipitation is 60%.
Friday Night
A chance of rain before 8pm. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 47.
Saturday Night
Mostly clear, with a low around 30.
Sunday
Sunny, with a high near 55.
Sunday Night
Partly cloudy, with a low around 40.
Monday
Mostly sunny, with a high near 63.
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:
4:53 am EDT Mar 24, 2026
Forecast Valid:
6am EDT Mar 24, 2026-6pm EDT Mar 30, 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