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.

Overcast

30°F

-1°C

Humidity 51%
Wind Speed Calm
Barometer 29.99 in (1017.6 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Last update 3 Jan 11:56 pm EST
Extended Forecast for

Sandy Spring MD

  • Overnight

    Overnight: Mostly cloudy, with a low around 25. Calm wind.

    Low: 25 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 37. Light northwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 18 mph.

    High: 37 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 23. Northwest wind around 5 mph becoming calm in the evening.

    Low: 23 °F

    Increasing
    Clouds

  • Monday

    Monday: Mostly cloudy, with a high near 41. Calm wind becoming south 5 to 9 mph in the morning.

    High: 41 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 31. South wind around 5 mph becoming calm in the evening.

    Low: 31 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 49.

    High: 49 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 25. Calm wind.
Sunday
Sunny, with a high near 37. Light northwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Sunday Night
Increasing clouds, with a low around 23. Northwest wind around 5 mph becoming calm in the evening.
Monday
Mostly cloudy, with a high near 41. Calm wind becoming south 5 to 9 mph in the morning.
Monday Night
Mostly cloudy, with a low around 31. South wind around 5 mph becoming calm in the evening.
Tuesday
Mostly cloudy, with a high near 49.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Partly sunny, with a high near 58.
Wednesday Night
Partly cloudy, with a low around 37.
Thursday
Partly sunny, with a high near 53.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 43. Chance of precipitation is 40%.
Friday
A chance of rain. Cloudy, with a high near 58. Chance of precipitation is 50%.
Friday Night
A chance of rain. Mostly cloudy, with a low around 47. Chance of precipitation is 40%.
Saturday
A chance of rain. Mostly cloudy, with a high near 58. Chance of precipitation is 40%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sandy Spring MD
 39.16°N 77.04°W (Elev. 469 ft)
Last Update:
9:53 pm EST Jan 3, 2026
Forecast Valid:
12am EST Jan 4, 2026-6pm EST Jan 10, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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