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

57°F

14°C

Humidity 39%
Wind Speed Vrbl 5 mph
Barometer 30.15 in (1022.6 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 19 Mar 4:56 pm EDT
Extended Forecast for

Sandy Spring MD

  • Tonight

    Tonight: Mostly clear, with a low around 37. Light and variable wind.

    Low: 37 °F

    Mostly Clear

  • Friday

    Friday: Scattered showers after 2pm. Increasing clouds, with a high near 65. Light south wind becoming southwest 8 to 13 mph in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 40%.

    High: 65 °F

    Sunny then
    Scattered
    Showers

  • Friday Night

    Friday Night: Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 46. Southwest wind 6 to 9 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 46 °F

    Showers
    Likely

  • Saturday

    Saturday: Mostly sunny, with a high near 66. Northwest wind 6 to 8 mph.

    High: 66 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 45. Light east wind.

    Low: 45 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of rain after 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 40%.

    Low: 49 °F

    Mostly Cloudy
    then Chance
    Rain

  • Monday

    Monday: A chance of rain before 8am. Mostly sunny, with a high near 60. Breezy. Chance of precipitation is 30%.

    High: 60 °F

    Chance Rain
    then Mostly
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 37. Light and variable wind.
Friday
Scattered showers after 2pm. Increasing clouds, with a high near 65. Light south wind becoming southwest 8 to 13 mph in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 40%.
Friday Night
Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 46. Southwest wind 6 to 9 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Mostly sunny, with a high near 66. Northwest wind 6 to 8 mph.
Saturday Night
Mostly cloudy, with a low around 45. Light east wind.
Sunday
Mostly sunny, with a high near 73.
Sunday Night
A chance of rain after 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 40%.
Monday
A chance of rain before 8am. Mostly sunny, with a high near 60. Breezy. Chance of precipitation is 30%.
Monday Night
Mostly clear, with a low around 30.
Tuesday
Mostly sunny, with a high near 49.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
Mostly cloudy, with a high near 52.
Wednesday Night
Mostly cloudy, with a low around 37.
Thursday
Partly sunny, with a high near 61.
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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:
4:53 pm EDT Mar 19, 2026
Forecast Valid:
5pm EDT Mar 19, 2026-6pm EDT Mar 26, 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