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

40°F

4°C

Humidity 93%
Wind Speed Calm
Barometer 30.07 in (1019.7 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 9 Mar 7:56 am EDT
Extended Forecast for

2 Miles NNW Potomac MD

  • Today

    Today: Sunny, with a high near 71. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 71 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 47. Calm wind.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 77. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 77 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 59. South wind 3 to 5 mph.

    Low: 59 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of rain, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 78. South wind 6 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.

    High: 78 °F

    Slight Chance
    Rain then
    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain and thunderstorms, then rain likely after 8pm. Mostly cloudy, with a low around 44. Chance of precipitation is 70%.

    Low: 44 °F

    Chance Rain
    then Rain
    Likely

  • Thursday

    Thursday: Rain likely, mainly before 2pm. Mostly cloudy, with a high near 52. Breezy. Chance of precipitation is 60%.

    High: 52 °F

    Rain Likely
    and Breezy

  • Thursday Night

    Thursday Night: A chance of rain before 8pm. Mostly clear, with a low around 33. Chance of precipitation is 30%.

    Low: 33 °F

    Chance Rain
    then Mostly
    Clear

  • Friday

    Friday: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 71. Calm wind becoming southwest around 6 mph in the afternoon.
Tonight
Mostly clear, with a low around 47. Calm wind.
Tuesday
Sunny, with a high near 77. Calm wind becoming south 5 to 7 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 59. South wind 3 to 5 mph.
Wednesday
A chance of rain, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 78. South wind 6 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.
Wednesday Night
A chance of rain and thunderstorms, then rain likely after 8pm. Mostly cloudy, with a low around 44. Chance of precipitation is 70%.
Thursday
Rain likely, mainly before 2pm. Mostly cloudy, with a high near 52. Breezy. Chance of precipitation is 60%.
Thursday Night
A chance of rain before 8pm. Mostly clear, with a low around 33. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 55.
Friday Night
Partly cloudy, with a low around 41.
Saturday
Partly sunny, with a high near 55.
Saturday Night
Mostly cloudy, with a low around 41.
Sunday
Mostly cloudy, with a high near 63.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Potomac MD
 39.06°N 77.2°W (Elev. 299 ft)
Last Update:
7:53 am EDT Mar 9, 2026
Forecast Valid:
9am EDT Mar 9, 2026-6pm EDT Mar 15, 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