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.

A Few Clouds

75°F

24°C

Humidity 100%
Wind Speed Calm
Barometer 30.00 in (1016.9 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Last update 13 Aug 9:56 pm EDT
Extended Forecast for

Damascus MD

  • Tonight

    Tonight: Mostly cloudy, with a low around 69. Calm wind.

    Low: 69 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Cloudy, with a high near 82. Light northeast wind. Chance of precipitation is 20%.

    High: 82 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers after 2am. Patchy fog between 11pm and 3am. Otherwise, mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 40%.

    Low: 67 °F

    Chance
    Showers and
    Patchy Fog

  • Saturday

    Saturday: A chance of showers, mainly before 8am. Partly sunny, with a high near 82. North wind 3 to 5 mph. Chance of precipitation is 30%.

    High: 82 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers, mainly after 2am. Mostly cloudy, with a low around 68. East wind 3 to 5 mph. Chance of precipitation is 40%.

    Low: 68 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 85. Chance of precipitation is 60%.

    High: 85 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.

    Low: 71 °F

    Showers
    Likely then
    Chance
    T-storms

  • Monday

    Monday: A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 50%.

    High: 85 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of thunderstorms before 8pm. Partly cloudy, with a low around 67. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 69. Calm wind.
Friday
A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Cloudy, with a high near 82. Light northeast wind. Chance of precipitation is 20%.
Friday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers after 2am. Patchy fog between 11pm and 3am. Otherwise, mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 40%.
Saturday
A chance of showers, mainly before 8am. Partly sunny, with a high near 82. North wind 3 to 5 mph. Chance of precipitation is 30%.
Saturday Night
A chance of showers, mainly after 2am. Mostly cloudy, with a low around 68. East wind 3 to 5 mph. Chance of precipitation is 40%.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 85. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Monday
A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 50%.
Monday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 83.
Tuesday Night
Partly cloudy, with a low around 67.
Wednesday
Mostly sunny, with a high near 84.
Wednesday Night
A slight chance of showers. Partly cloudy, with a low around 69. Chance of precipitation is 20%.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
Damascus MD
 39.29°N 77.22°W (Elev. 764 ft)
Last Update:
7:53 pm EDT Aug 13, 2026
Forecast Valid:
10pm EDT Aug 13, 2026-6pm EDT Aug 20, 2026
 
Forecast Discussion
 
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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