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

44°F

7°C

Humidity 68%
Wind Speed Calm
Barometer 29.96 in (1015.9 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 8 May 4:56 am EDT
Extended Forecast for

Ashton-Sandy Spring MD

  • Today

    Today: Sunny, with a high near 69. Light northwest wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 24 mph.

    High: 69 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy during the evening, then mostly clear overnight, with a low around 51. Light and variable wind.

    Low: 51 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 71. Southwest wind 7 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.

    High: 71 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 8pm. Mostly cloudy during the early evening, then becoming clear, with a low around 52. Calm wind. Chance of precipitation is 30%.

    Low: 52 °F

    Chance
    Showers then
    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 77. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 77 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers after 2am. Low around 50. Chance of precipitation is 80%.

    Low: 50 °F

    Chance
    Showers then
    Showers

  • Monday

    Monday: Showers, mainly before 2pm. High near 61. Chance of precipitation is 80%.

    High: 61 °F

    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 69. Light northwest wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 24 mph.
Tonight
Mostly cloudy during the evening, then mostly clear overnight, with a low around 51. Light and variable wind.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 71. Southwest wind 7 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms before 8pm. Mostly cloudy during the early evening, then becoming clear, with a low around 52. Calm wind. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 77. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Sunday Night
A chance of showers and thunderstorms, then showers after 2am. Low around 50. Chance of precipitation is 80%.
Monday
Showers, mainly before 2pm. High near 61. Chance of precipitation is 80%.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
Sunny, with a high near 64.
Tuesday Night
Partly cloudy, with a low around 47.
Wednesday
Showers likely. Mostly cloudy, with a high near 65. Chance of precipitation is 60%.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 49. Chance of precipitation is 60%.
Thursday
A chance of showers. Partly sunny, with a high near 67. Chance of precipitation is 30%.
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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:
4:54 am EDT May 8, 2026
Forecast Valid:
5am EDT May 8, 2026-6pm EDT May 14, 2026
 
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