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

32°F

0°C

Humidity 64%
Wind Speed Calm
Barometer 30.19 in (1024.1 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Last update 26 Dec 3:56 am EST
Extended Forecast for

Ashton-Sandy Spring MD

  • Today

    Today: A slight chance of freezing rain and sleet before 4pm, then a chance of rain and sleet between 4pm and 5pm, then a chance of rain, freezing rain, and sleet after 5pm. Cloudy, with a high near 32. Light and variable wind becoming southeast 5 to 9 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 30%.

    High: 32 °F

    Mostly Cloudy
    then Chance
    Wintry Mix

  • Tonight

    Tonight: Rain, freezing rain, and sleet before 9pm, then a chance of rain between 9pm and 1am. Low around 32. South wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 80%. Little or no ice accumulation expected. Little or no sleet accumulation expected.

    Low: 32 °F

    Wintry Mix
    then Slight
    Chance Rain

  • Saturday

    Saturday: Partly sunny, with a high near 42. North wind around 7 mph.

    High: 42 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 30. Light northeast wind.

    Low: 30 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain. Cloudy, with a high near 46. Calm wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 40%.

    High: 46 °F

    Chance Rain

  • Sunday Night

    Sunday Night: A chance of rain. Cloudy, with a low around 41. Chance of precipitation is 50%.

    Low: 41 °F

    Chance Rain

  • Monday

    Monday: Rain likely, mainly before 1pm. Mostly cloudy, with a high near 59. Chance of precipitation is 70%.

    High: 59 °F

    Rain Likely

  • Monday Night

    Monday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 35.

    High: 35 °F

    Mostly Sunny

Detailed Forecast

Today
A slight chance of freezing rain and sleet before 4pm, then a chance of rain and sleet between 4pm and 5pm, then a chance of rain, freezing rain, and sleet after 5pm. Cloudy, with a high near 32. Light and variable wind becoming southeast 5 to 9 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 30%.
Tonight
Rain, freezing rain, and sleet before 9pm, then a chance of rain between 9pm and 1am. Low around 32. South wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 80%. Little or no ice accumulation expected. Little or no sleet accumulation expected.
Saturday
Partly sunny, with a high near 42. North wind around 7 mph.
Saturday Night
Mostly cloudy, with a low around 30. Light northeast wind.
Sunday
A chance of rain. Cloudy, with a high near 46. Calm wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 40%.
Sunday Night
A chance of rain. Cloudy, with a low around 41. Chance of precipitation is 50%.
Monday
Rain likely, mainly before 1pm. Mostly cloudy, with a high near 59. Chance of precipitation is 70%.
Monday Night
Partly cloudy, with a low around 26.
Tuesday
Mostly sunny, with a high near 35.
Tuesday Night
Partly cloudy, with a low around 25.
Wednesday
Partly sunny, with a high near 41.
Wednesday Night
Partly cloudy, with a low around 24.
New Year's Day
Partly sunny, with a high near 34.
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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:
3:53 am EST Dec 26, 2025
Forecast Valid:
4am EST Dec 26, 2025-6pm EST Jan 1, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation