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

51°F

11°C

Humidity 61%
Wind Speed W 5 mph
Barometer 30.26 in (1026.5 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 8 Jan 10:56 am EST
Extended Forecast for

Ashton-Sandy Spring MD

  • Today

    Today: Mostly sunny, with a high near 53. Calm wind.

    High: 53 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 38. Calm wind becoming south around 5 mph after midnight.

    Low: 38 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of rain after 1pm. Increasing clouds, with a high near 57. South wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 50%.

    High: 57 °F

    Partly Sunny
    then Chance
    Rain

  • Friday Night

    Friday Night: Rain. Low around 51. Southwest wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 51 °F

    Rain

  • Saturday

    Saturday: Rain. High near 62. 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 100%.

    High: 62 °F

    Rain

  • Saturday Night

    Saturday Night: Rain, mainly before 1am. Low around 43. Chance of precipitation is 80%.

    Low: 43 °F

    Rain

  • Sunday

    Sunday: Mostly cloudy, with a high near 49.

    High: 49 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 40.

    High: 40 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 53. Calm wind.
Tonight
Mostly cloudy, with a low around 38. Calm wind becoming south around 5 mph after midnight.
Friday
A chance of rain after 1pm. Increasing clouds, with a high near 57. South wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 50%.
Friday Night
Rain. Low around 51. Southwest wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Rain. High near 62. 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 100%.
Saturday Night
Rain, mainly before 1am. Low around 43. Chance of precipitation is 80%.
Sunday
Mostly cloudy, with a high near 49.
Sunday Night
Partly cloudy, with a low around 28.
Monday
Sunny, with a high near 40.
Monday Night
Mostly clear, with a low around 27.
Tuesday
Mostly sunny, with a high near 47.
Tuesday Night
Partly cloudy, with a low around 32.
Wednesday
Mostly cloudy, with a high near 47.
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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:
9:53 am EST Jan 8, 2026
Forecast Valid:
11am EST Jan 8, 2026-6pm EST Jan 14, 2026
 
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