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.

Partly Cloudy

59°F

15°C

Humidity NA
Wind Speed NW 3 mph
Barometer 30.02 in (1017.8 mb)
Dewpoint N/A
Visibility 10.00 mi
Last update 24 Jun 1:56 am EDT
Extended Forecast for

Damascus MD

  • Overnight

    Overnight: Clear, with a low around 59. North wind around 7 mph.

    Low: 59 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 79. Northwest wind 5 to 7 mph.

    High: 79 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60. Calm wind.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 84. Calm wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 18 mph.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 66. South wind 5 to 7 mph. Chance of precipitation is 20%.

    Low: 66 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: A slight chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 84. Chance of precipitation is 60%.

    High: 84 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 67. Chance of precipitation is 90%.

    Low: 67 °F

    Showers

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 78. Chance of precipitation is 70%.

    High: 78 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 65. Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 59. North wind around 7 mph.
Wednesday
Sunny, with a high near 79. Northwest wind 5 to 7 mph.
Wednesday Night
Mostly clear, with a low around 60. Calm wind.
Thursday
Sunny, with a high near 84. Calm wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 18 mph.
Thursday Night
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 66. South wind 5 to 7 mph. Chance of precipitation is 20%.
Friday
A slight chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 84. Chance of precipitation is 60%.
Friday Night
Showers and possibly a thunderstorm. Low around 67. Chance of precipitation is 90%.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 78. Chance of precipitation is 70%.
Saturday Night
A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 65. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 83.
Sunday Night
Mostly clear, with a low around 65.
Monday
Mostly sunny, with a high near 87.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
Sunny, with a high near 90.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Damascus MD
 39.29°N 77.22°W (Elev. 764 ft)
Last Update:
10:52 pm EDT Jun 23, 2026
Forecast Valid:
2am EDT Jun 24, 2026-6pm EDT Jun 30, 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