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.

Mostly Cloudy

49°F

9°C

Humidity 43%
Wind Speed SW 7 mph
Barometer 30.26 in (1026.4 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 19 Mar 11:56 am EDT
Extended Forecast for

3 Miles SW North Potomac MD

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 55. South wind around 6 mph.

    High: 55 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of showers after 2pm. Partly sunny, with a high near 66. Light southeast wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 20%.

    High: 66 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 50. South wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 50 °F

    Showers
    Likely

  • Saturday

    Saturday: Mostly sunny, with a high near 68. Northwest wind 5 to 8 mph.

    High: 68 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers. Mostly cloudy, with a low around 45. Chance of precipitation is 40%.

    Low: 45 °F

    Chance
    Showers

  • Monday

    Monday: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 55. South wind around 6 mph.
Tonight
Mostly cloudy, with a low around 38. Calm wind.
Friday
A slight chance of showers after 2pm. Partly sunny, with a high near 66. Light southeast wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 20%.
Friday Night
Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 50. South wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Mostly sunny, with a high near 68. Northwest wind 5 to 8 mph.
Saturday Night
Partly cloudy, with a low around 46.
Sunday
Mostly sunny, with a high near 73.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 45. Chance of precipitation is 40%.
Monday
Partly sunny, with a high near 55.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
Partly sunny, with a high near 49.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
Partly sunny, with a high near 58.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW North Potomac MD
 39.07°N 77.28°W (Elev. 299 ft)
Last Update:
12:11 pm EDT Mar 19, 2026
Forecast Valid:
12pm EDT Mar 19, 2026-6pm EDT Mar 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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