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Hurricane Erin Moving Away from the North Carolina Coast, Dangerous Surf & Rip Currents Continue; Hazardous Heat out West

Tropical storm conditions, storm surge flooding and coastal flooding continue today across the Outer Banks and portions of the Mid-Atlantic coast. Life-threatening rip currents and high surf continue to impact much of the East Coast through the end of the week. Hazardous, record heat will continue across the Western U.S. through the weekend. 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 100%
Wind Speed Vrbl 3 mph
Barometer 29.95 in (1015.2 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 21 Aug 10:56 am EDT
Extended Forecast for

Ashton-Sandy Spring MD

  • Today

    Today: Isolated showers between 2pm and 3pm. Mostly cloudy, with a high near 71. Northeast wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    High: 71 °F

    Isolated
    Showers

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 60. North wind 3 to 8 mph. Winds could gust as high as 18 mph.

    Low: 60 °F

    Decreasing
    Clouds

  • Friday

    Friday: Sunny, with a high near 81. North wind around 6 mph.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60. Light and variable wind.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 82. Calm wind becoming south 5 to 9 mph in the morning.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers after 2am. Partly cloudy, with a low around 66. Chance of precipitation is 20%.

    Low: 66 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers after 8am. Mostly cloudy, with a high near 82. Chance of precipitation is 50%.

    High: 82 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers before 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 50%.

    Low: 66 °F

    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

Today
Isolated showers between 2pm and 3pm. Mostly cloudy, with a high near 71. Northeast wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 60. North wind 3 to 8 mph. Winds could gust as high as 18 mph.
Friday
Sunny, with a high near 81. North wind around 6 mph.
Friday Night
Mostly clear, with a low around 60. Light and variable wind.
Saturday
Sunny, with a high near 82. Calm wind becoming south 5 to 9 mph in the morning.
Saturday Night
A slight chance of showers after 2am. Partly cloudy, with a low around 66. Chance of precipitation is 20%.
Sunday
A chance of showers after 8am. Mostly cloudy, with a high near 82. Chance of precipitation is 50%.
Sunday Night
A chance of showers before 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 50%.
Monday
Mostly sunny, with a high near 80.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Mostly sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ashton-Sandy Spring MD
 39.15°N 77.01°W (Elev. 449 ft)
Last Update:
10:30 am EDT Aug 21, 2025
Forecast Valid:
11am EDT Aug 21, 2025-6pm EDT Aug 27, 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