National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tropical Storm and Storm Surge Warnings for the North Carolina Outer Banks; Heat Building in the West

Storm surge flooding and tropical storm conditions are expected in the Outer Banks beginning late Wednesday. Tropical Storm and Storm Surge Warnings are in effect. Tropical storm conditions are possible along the eastern shore of Virginia Thursday. Hurricane Erin will continue to produce life-threatening surf and rip currents along much of the east coast of the U.S. this week. Read More >

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Overcast

66°F

19°C

Humidity NA
Wind Speed Calm
Barometer 30.13 in (1021.5 mb)
Dewpoint N/A
Visibility 9.00 mi
Last update 19 Aug 9:56 pm EDT
Extended Forecast for

4 Miles W North Potomac MD

  • Tonight

    Tonight: Patchy drizzle before midnight, then patchy drizzle after 2am. Mostly cloudy, with a low around 68. East wind 3 to 6 mph.

    Low: 68 °F

    Patchy
    Drizzle

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 84. Southeast wind 3 to 6 mph. Chance of precipitation is 30%.

    High: 84 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 68. Northeast wind around 8 mph. Chance of precipitation is 40%.

    Low: 68 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 76. Northeast wind 10 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.

    High: 76 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers before 8pm. Partly cloudy, with a low around 61. North wind 7 to 10 mph. Chance of precipitation is 30%.

    Low: 61 °F

    Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers after 2am. Partly cloudy, with a low around 66. Chance of precipitation is 30%.

    Low: 66 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Patchy drizzle before midnight, then patchy drizzle after 2am. Mostly cloudy, with a low around 68. East wind 3 to 6 mph.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 84. Southeast wind 3 to 6 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 68. Northeast wind around 8 mph. Chance of precipitation is 40%.
Thursday
A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 76. Northeast wind 10 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.
Thursday Night
A chance of showers before 8pm. Partly cloudy, with a low around 61. North wind 7 to 10 mph. Chance of precipitation is 30%.
Friday
Sunny, with a high near 80.
Friday Night
Mostly clear, with a low around 60.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
A chance of showers after 2am. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
Sunday
A chance of showers. Partly sunny, with a high near 83. Chance of precipitation is 50%.
Sunday Night
A chance of showers. Partly cloudy, with a low around 64. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W North Potomac MD
 39.1°N 77.31°W (Elev. 348 ft)
Last Update:
7:29 pm EDT Aug 19, 2025
Forecast Valid:
10pm EDT Aug 19, 2025-6pm EDT Aug 26, 2025
 
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