Extreme Heat Across the Southern U.S.; Flash Flooding Threats in the Mid-Atlantic, Northeast, and Four Corners Region

Dangerous and extreme heat will remain across portions of the southern U.S. this week. Heavy rainfall may bring significant flash flooding across portions of the Mid-Atlantic and Northeast through the night, and additional flash flooding concerns across New England on Wednesday. Monsoonal thunderstorms will bring a flash flood risk to the Four Corners region, especially in burn scar areas Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

66°F

19°C

Humidity NA
Wind Speed NW 3 mph
Barometer 29.65 in (1005.0 mb)
Dewpoint N/A
Visibility 10.00 mi
Last update 29 Jul 4:56 am EDT
Extended Forecast for

Ashton-Sandy Spring MD

  • Today

    Today: Sunny, with a high near 82. Northwest wind 8 to 11 mph, with gusts as high as 23 mph.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 64. Northwest wind around 8 mph, with gusts as high as 18 mph.

    Low: 64 °F

    Mostly Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 83. Northwest wind 9 to 11 mph, with gusts as high as 22 mph.

    High: 83 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 65. Northwest wind 3 to 6 mph.

    Low: 65 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 86. North wind 3 to 5 mph.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 86.

    High: 86 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms.  Mostly cloudy, with a low around 69. Chance of precipitation is 20%.

    Low: 69 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm.  Mostly cloudy, with a high near 85. Chance of precipitation is 40%.

    High: 85 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 82. Northwest wind 8 to 11 mph, with gusts as high as 23 mph.
Tonight
Mostly clear, with a low around 64. Northwest wind around 8 mph, with gusts as high as 18 mph.
Thursday
Increasing clouds, with a high near 83. Northwest wind 9 to 11 mph, with gusts as high as 22 mph.
Thursday Night
Mostly clear, with a low around 65. Northwest wind 3 to 6 mph.
Friday
Sunny, with a high near 86. North wind 3 to 5 mph.
Friday Night
Partly cloudy, with a low around 68.
Saturday
Partly sunny, with a high near 86.
Saturday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Chance of precipitation is 20%.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 85. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Chance of precipitation is 50%.
Monday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 84. Chance of precipitation is 50%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Ashton-Sandy Spring MD
 39.15°N 77.01°W (Elev. 449 ft)
4:53 am EDT Jul 29, 2026
5am EDT Jul 29, 2026-6pm EDT Aug 4, 2026
 
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Additional Resources

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