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.

Overcast

73°F

23°C

Humidity NA
Wind Speed Vrbl 3 mph
Barometer 29.87 in (1012.4 mb)
Dewpoint N/A
Visibility 10.00 mi
Last update 17 Aug 3:56 am EDT
Extended Forecast for

Gaithersburg MD

  • Today

    Today: A slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 88. Northwest wind 5 to 8 mph. Chance of precipitation is 20%.

    High: 88 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 70. West wind around 5 mph becoming calm in the evening.

    Low: 70 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Sunny, with a high near 85. North wind 5 to 7 mph.

    High: 85 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 87. Calm wind becoming west around 6 mph in the afternoon.

    High: 87 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 60%.

    High: 85 °F

    Mostly Sunny
    then Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.

    Low: 66 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers, mainly after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 50%.

    High: 82 °F

    Slight Chance
    Showers then
    Chance
    Showers

Detailed Forecast

Today
A slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 88. Northwest wind 5 to 8 mph. Chance of precipitation is 20%.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 70. West wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 85. North wind 5 to 7 mph.
Tuesday Night
Mostly clear, with a low around 66. Calm wind.
Wednesday
Sunny, with a high near 87. Calm wind becoming west around 6 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 69.
Thursday
Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 60%.
Thursday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Friday
A chance of showers, mainly after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Saturday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 81. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 50%.
Sunday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 20%.
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:
4:30 am EDT Aug 17, 2026
Forecast Valid:
4am EDT Aug 17, 2026-6pm EDT Aug 23, 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