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

19°C

67°F

Humidity 87%
Wind Speed Calm
Barometer 1015.4 mb (29.96 in)
Dewpoint 17°C (63°F)
Visibility 16 km
Last update 3 Jun 9:56 pm EDT
Extended Forecast for

Potomac MD

  • Tonight

    Tonight: Mostly clear, with a low around 19. Calm wind.

    Low: 19 °C

    Mostly Clear

  • Tuesday

    Tuesday: Isolated showers and thunderstorms after 2pm. Mostly sunny, with a high near 29. Northeast wind 5 to 11 km/h becoming southeast in the afternoon. Chance of precipitation is 20%.

    High: 29 °C

    Mostly Sunny
    then Isolated
    T-storms

  • Tuesday Night

    Tuesday Night: Isolated showers and thunderstorms before 8pm, then a slight chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 19. Southeast wind 8 to 13 km/h. Chance of precipitation is 20%.

    Low: 19 °C

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 27. South wind 10 to 14 km/h. Chance of precipitation is 60%. New rainfall amounts between 2.5 and 5 mm possible.

    High: 27 °C

    Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 21. South wind 11 to 13 km/h. Chance of precipitation is 70%.

    Low: 21 °C

    Showers
    Likely

  • Thursday

    Thursday: A chance of showers and thunderstorms. Partly sunny, with a high near 29. Chance of precipitation is 50%.

    High: 29 °C

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers before 2am. Partly cloudy, with a low around 17. Chance of precipitation is 30%.

    Low: 17 °C

    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 26.

    High: 26 °C

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 15.

    Low: 15 °C

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 19. Calm wind.
Tuesday
Isolated showers and thunderstorms after 2pm. Mostly sunny, with a high near 29. Northeast wind 5 to 11 km/h becoming southeast in the afternoon. Chance of precipitation is 20%.
Tuesday Night
Isolated showers and thunderstorms before 8pm, then a slight chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 19. Southeast wind 8 to 13 km/h. Chance of precipitation is 20%.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 27. South wind 10 to 14 km/h. Chance of precipitation is 60%. New rainfall amounts between 2.5 and 5 mm possible.
Wednesday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 21. South wind 11 to 13 km/h. Chance of precipitation is 70%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 29. Chance of precipitation is 50%.
Thursday Night
A chance of showers before 2am. Partly cloudy, with a low around 17. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 26.
Friday Night
Partly cloudy, with a low around 15.
Saturday
Mostly sunny, with a high near 24.
Saturday Night
Partly cloudy, with a low around 16.
Sunday
A chance of showers. Partly sunny, with a high near 26. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Partly cloudy, with a low around 16. Chance of precipitation is 30%.
Monday
A chance of showers. Partly sunny, with a high near 26. Chance of precipitation is 30%.
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Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Potomac MD
 39.02°N 77.2°W (Elev. 381 m)
Last Update:
7:30 pm EDT Jun 3, 2024
Forecast Valid:
10pm EDT Jun 3, 2024-6pm EDT Jun 10, 2024
 
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