Sinlaku Continues to Impact the Marianas; Severe Weather from the Central US to the Northeast; Late-Season Snow in the Northwest

Sinlaku continues to bring destructive winds, widespread heavy rain/flooding, and storm surge to the Marianas. Showers and severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley and to the Central/Southern Plains through Thursday. A front will produce late-season snowfall over the Cascades and Northern Rockies and coastal rain over the Northwest Coast through Thursday. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

90°F

32°C

Humidity 33%
Wind Speed Vrbl 6 mph
Barometer 29.92 in (1014.0 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 15 Apr 4:56 pm EDT
Extended Forecast for

Sandy Spring MD

  • Tonight

    Tonight: Partly cloudy, with a low around 68. Southwest wind 5 to 9 mph becoming light  after midnight.

    Low: 68 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 90. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 90 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers, mainly after 2am.  Mostly cloudy, with a low around 66. Southwest wind around 7 mph becoming west after midnight.  Chance of precipitation is 30%.

    Low: 66 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers.  Partly sunny, with a high near 81. Northwest wind 6 to 9 mph.  Chance of precipitation is 30%.

    High: 81 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59. North wind around 5 mph becoming calm  in the evening.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of showers after 2pm.  Mostly sunny, with a high near 84. Chance of precipitation is 20%.

    High: 84 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers after 8pm.  Mostly cloudy, with a low around 51. Chance of precipitation is 50%.

    Low: 51 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers likely, mainly before 2pm.  Mostly cloudy, with a high near 64. Chance of precipitation is 60%.

    High: 64 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers before 8pm.  Partly cloudy, with a low around 38. Chance of precipitation is 30%.

    Low: 38 °F

    Chance
    Showers then
    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 68. Southwest wind 5 to 9 mph becoming light after midnight.
Thursday
Mostly sunny, with a high near 90. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Thursday Night
A chance of showers, mainly after 2am. Mostly cloudy, with a low around 66. Southwest wind around 7 mph becoming west after midnight. Chance of precipitation is 30%.
Friday
A chance of showers. Partly sunny, with a high near 81. Northwest wind 6 to 9 mph. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 59. North wind around 5 mph becoming calm in the evening.
Saturday
A slight chance of showers after 2pm. Mostly sunny, with a high near 84. Chance of precipitation is 20%.
Saturday Night
A chance of showers after 8pm. Mostly cloudy, with a low around 51. Chance of precipitation is 50%.
Sunday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 64. Chance of precipitation is 60%.
Sunday Night
A chance of showers before 8pm. Partly cloudy, with a low around 38. Chance of precipitation is 30%.
Monday
Sunny, with a high near 54.
Monday Night
Mostly clear, with a low around 35.
Tuesday
Sunny, with a high near 66.
Tuesday Night
Mostly clear, with a low around 51.
Wednesday
Mostly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
Sandy Spring MD
 39.16°N 77.04°W (Elev. 469 ft)
4:53 pm EDT Apr 15, 2026
5pm EDT Apr 15, 2026-6pm EDT Apr 22, 2026
 
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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