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

43°F

6°C

Humidity 42%
Wind Speed SE 7 mph
Barometer 30.37 in (1030.2 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 24 Mar 9:56 pm EDT
Extended Forecast for

Gaithersburg MD

  • Tonight

    Tonight: Mostly cloudy, with a low around 36. Light south wind.

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 59. South wind 5 to 8 mph.

    High: 59 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 48. South wind around 8 mph.

    Low: 48 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 72. South wind 7 to 11 mph, with gusts as high as 21 mph.

    High: 72 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A slight chance of rain, then rain likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 54. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    Low: 54 °F

    Slight Chance
    Rain then
    Rain Likely

  • Friday

    Friday: Rain likely, mainly before 2pm. Mostly cloudy, with a high near 61. Chance of precipitation is 70%.

    High: 61 °F

    Rain Likely

  • Friday Night

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

    Low: 30 °F

    Chance Rain
    then Partly
    Cloudy

  • Saturday

    Saturday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 36. Light south wind.
Wednesday
Partly sunny, with a high near 59. South wind 5 to 8 mph.
Wednesday Night
Mostly cloudy, with a low around 48. South wind around 8 mph.
Thursday
Partly sunny, with a high near 72. South wind 7 to 11 mph, with gusts as high as 21 mph.
Thursday Night
A slight chance of rain, then rain likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 54. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Friday
Rain likely, mainly before 2pm. Mostly cloudy, with a high near 61. Chance of precipitation is 70%.
Friday Night
A chance of rain before 8pm. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 49.
Saturday Night
Mostly clear, with a low around 32.
Sunday
Sunny, with a high near 56.
Sunday Night
Partly cloudy, with a low around 40.
Monday
Mostly sunny, with a high near 65.
Monday Night
Partly cloudy, with a low around 48.
Tuesday
Partly sunny, with a high near 66.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Gaithersburg MD
 39.15°N 77.21°W (Elev. 443 ft)
Last Update:
7:54 pm EDT Mar 24, 2026
Forecast Valid:
10pm EDT Mar 24, 2026-6pm EDT Mar 31, 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