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

41°F

5°C

Humidity 53%
Wind Speed Vrbl 7 mph
Barometer 30.09 in (1020.6 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 3 Dec 12:56 pm EST
Extended Forecast for

Ashton-Sandy Spring MD

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 41. West wind around 6 mph.

    High: 41 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 25. Light and variable wind.

    Low: 25 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 40. Northwest wind 6 to 15 mph, with gusts as high as 28 mph.

    High: 40 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 20. Northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.

    Low: 20 °F

    Partly Cloudy

  • Friday

    Friday: A chance of snow. Cloudy, with a high near 33. Light and variable wind becoming south around 6 mph in the morning. Chance of precipitation is 50%.

    High: 33 °F

    Chance Snow

  • Friday Night

    Friday Night: A chance of snow and freezing rain before 1am, then a slight chance of snow between 1am and 4am, then a slight chance of freezing rain after 4am. Mostly cloudy, with a low around 23. Chance of precipitation is 30%.

    Low: 23 °F

    Chance Wintry
    Mix

  • Saturday

    Saturday: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 40.

    High: 40 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 41. West wind around 6 mph.
Tonight
Partly cloudy, with a low around 25. Light and variable wind.
Thursday
Partly sunny, with a high near 40. Northwest wind 6 to 15 mph, with gusts as high as 28 mph.
Thursday Night
Partly cloudy, with a low around 20. Northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.
Friday
A chance of snow. Cloudy, with a high near 33. Light and variable wind becoming south around 6 mph in the morning. Chance of precipitation is 50%.
Friday Night
A chance of snow and freezing rain before 1am, then a slight chance of snow between 1am and 4am, then a slight chance of freezing rain after 4am. Mostly cloudy, with a low around 23. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 41.
Saturday Night
Mostly cloudy, with a low around 26.
Sunday
Partly sunny, with a high near 40.
Sunday Night
Mostly cloudy, with a low around 25.
Monday
Partly sunny, with a high near 35.
Monday Night
Partly cloudy, with a low around 20.
Tuesday
Partly sunny, with a high near 36.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ashton-Sandy Spring MD
 39.13°N 77.01°W (Elev. 400 ft)
Last Update:
12:52 pm EST Dec 3, 2025
Forecast Valid:
1pm EST Dec 3, 2025-6pm EST Dec 9, 2025
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation