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

49°F

9°C

Humidity 44%
Wind Speed SW 6 mph
Barometer 29.83 in (1011.5 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 14 Mar 1:56 am EDT
Extended Forecast for

Sandy Spring MD

  • Overnight

    Overnight: Mostly clear, with a low around 41. West wind around 13 mph, with gusts as high as 25 mph.

    Low: 41 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 54. West wind 13 to 15 mph, with gusts as high as 26 mph.

    High: 54 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 38. Calm wind becoming east around 5 mph after midnight.

    Low: 38 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 57. Southeast wind 8 to 15 mph, with gusts as high as 26 mph.

    High: 57 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Showers. Low around 51. Southeast wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 90%.

    Low: 51 °F

    Showers

  • Monday

    Monday: Showers, with thunderstorms also possible after 2pm. High near 69. Breezy. Chance of precipitation is 100%.

    High: 69 °F

    Showers and
    Breezy

  • Monday Night

    Monday Night: Showers likely before 2am. Mostly cloudy, with a low around 28. Chance of precipitation is 70%.

    Low: 28 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 23.

    Low: 23 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 41. West wind around 13 mph, with gusts as high as 25 mph.
Saturday
Sunny, with a high near 54. West wind 13 to 15 mph, with gusts as high as 26 mph.
Saturday Night
Mostly cloudy, with a low around 38. Calm wind becoming east around 5 mph after midnight.
Sunday
Mostly cloudy, with a high near 57. Southeast wind 8 to 15 mph, with gusts as high as 26 mph.
Sunday Night
Showers. Low around 51. Southeast wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 90%.
Monday
Showers, with thunderstorms also possible after 2pm. High near 69. Breezy. Chance of precipitation is 100%.
Monday Night
Showers likely before 2am. Mostly cloudy, with a low around 28. Chance of precipitation is 70%.
Tuesday
Mostly sunny, with a high near 36.
Tuesday Night
Mostly clear, with a low around 23.
Wednesday
Partly sunny, with a high near 42.
Wednesday Night
Partly cloudy, with a low around 30.
Thursday
Mostly sunny, with a high near 51.
Thursday Night
Partly cloudy, with a low around 36.
Friday
Mostly sunny, with a high near 58.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sandy Spring MD
 39.14°N 77.04°W (Elev. 463 ft)
Last Update:
1:53 am EDT Mar 14, 2026
Forecast Valid:
2am EDT Mar 14, 2026-6pm EDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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