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

35°F

2°C

Humidity 50%
Wind Speed Calm
Barometer 30.54 in (1036.0 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Last update 28 Mar 9:56 pm EDT
Extended Forecast for

Sandy Spring MD

  • Tonight

    Tonight: Clear, with a low around 32. Calm wind.

    Low: 32 °F

    Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 59. Light south wind increasing to 9 to 14 mph in the morning. Winds could gust as high as 24 mph.

    High: 59 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 47. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 47 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 69. Southwest wind 9 to 11 mph, with gusts as high as 21 mph.

    High: 69 °F

    Partly Sunny

  • Monday Night

    Monday Night: A slight chance of showers after 2am. Mostly cloudy, with a low around 58. Southwest wind 7 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.

    Low: 58 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Rain likely after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 70%.

    High: 79 °F

    Mostly Sunny
    then Rain
    Likely

  • Wednesday Night

    Wednesday Night: Rain. Low around 46. Chance of precipitation is 80%.

    Low: 46 °F

    Rain

Detailed Forecast

Tonight
Clear, with a low around 32. Calm wind.
Sunday
Mostly sunny, with a high near 59. Light south wind increasing to 9 to 14 mph in the morning. Winds could gust as high as 24 mph.
Sunday Night
Mostly cloudy, with a low around 47. South wind around 10 mph, with gusts as high as 20 mph.
Monday
Partly sunny, with a high near 69. Southwest wind 9 to 11 mph, with gusts as high as 21 mph.
Monday Night
A slight chance of showers after 2am. Mostly cloudy, with a low around 58. Southwest wind 7 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
Partly cloudy, with a low around 63.
Wednesday
Rain likely after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 70%.
Wednesday Night
Rain. Low around 46. Chance of precipitation is 80%.
Thursday
Rain likely, mainly after 2pm. Mostly cloudy, with a high near 52. Chance of precipitation is 60%.
Thursday Night
Rain likely. Cloudy, with a low around 44. Chance of precipitation is 70%.
Friday
Rain likely. Cloudy, with a high near 50. Chance of precipitation is 70%.
Friday Night
Rain likely. Cloudy, with a low around 50. Chance of precipitation is 60%.
Saturday
A chance of rain. Mostly cloudy, with a high near 61. Chance of precipitation is 50%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sandy Spring MD
 39.16°N 77.04°W (Elev. 469 ft)
Last Update:
7:53 pm EDT Mar 28, 2026
Forecast Valid:
10pm EDT Mar 28, 2026-6pm EDT Apr 4, 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