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 >

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

78°F

26°C

Humidity 48%
Wind Speed SE 5 mph
Barometer 29.93 in (1014.5 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 14 Apr 7:56 pm EDT
Extended Forecast for

Derwood MD

  • Tonight

    Tonight: Isolated showers and thunderstorms before 11pm.  Partly cloudy, with a low around 66. Southwest wind around 6 mph becoming calm  after midnight.  Chance of precipitation is 20%.

    Low: 66 °F

    Isolated
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 92. Calm wind becoming southwest 5 to 8 mph in the morning. Winds could gust as high as 18 mph.

    High: 92 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 70. Southwest wind 3 to 6 mph.

    Low: 70 °F

    Mostly Cloudy

  • Thursday

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

    High: 90 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers.  Mostly cloudy, with a low around 68. West wind around 6 mph.  Chance of precipitation is 20%.

    Low: 68 °F

    Slight Chance
    Showers

  • Friday

    Friday: A chance of showers.  Partly sunny, with a high near 85. Chance of precipitation is 30%.

    High: 85 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Saturday Night

    Saturday Night: A chance of showers.  Mostly cloudy, with a low around 58. Chance of precipitation is 30%.

    Low: 58 °F

    Chance
    Showers

Detailed Forecast

Tonight
Isolated showers and thunderstorms before 11pm. Partly cloudy, with a low around 66. Southwest wind around 6 mph becoming calm after midnight. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 92. Calm wind becoming southwest 5 to 8 mph in the morning. Winds could gust as high as 18 mph.
Wednesday Night
Mostly cloudy, with a low around 70. Southwest wind 3 to 6 mph.
Thursday
Partly sunny, with a high near 90. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Thursday Night
A slight chance of showers. Mostly cloudy, with a low around 68. West wind around 6 mph. Chance of precipitation is 20%.
Friday
A chance of showers. Partly sunny, with a high near 85. Chance of precipitation is 30%.
Friday Night
Mostly clear, with a low around 60.
Saturday
Sunny, with a high near 88.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 58. Chance of precipitation is 30%.
Sunday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 71. Chance of precipitation is 60%.
Sunday Night
Showers likely. Partly cloudy, with a low around 41. Chance of precipitation is 60%.
Monday
Sunny, with a high near 58.
Monday Night
Mostly clear, with a low around 37.
Tuesday
Sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
Derwood MD
 39.12°N 77.13°W (Elev. 348 ft)
7:53 pm EDT Apr 14, 2026
8pm EDT Apr 14, 2026-6pm EDT Apr 21, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database