National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather from the Southern Plains to the Great Lakes

Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, thunderstorms, and coastal impacts to the Marianas Islands into Wednesday. Typhoon conditions are likely over CNMI and tropical storm conditions over Guam. Severe thunderstorms and heavy rain are expected from the Southern Plains to the Great Lakes today. Read More >

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

A Few Clouds

84°F

29°C

Humidity 37%
Wind Speed SW 12 G 16 mph
Barometer 29.95 in (1015.0 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 14 Apr 4:56 pm EDT
Extended Forecast for

Ashton MD

  • Tonight

    Tonight: Isolated showers and thunderstorms before 9pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 65. Southwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

    Low: 65 °F

    Isolated
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 91. Calm wind becoming southwest 5 to 8 mph in the morning. Winds could gust as high as 18 mph.

    High: 91 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 69. Southwest wind 3 to 6 mph.

    Low: 69 °F

    Mostly Cloudy

  • Thursday

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

    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 84. Chance of precipitation is 30%.

    High: 84 °F

    Chance
    Showers

  • Friday Night

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

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly 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 9pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 65. Southwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 91. 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 69. Southwest wind 3 to 6 mph.
Thursday
Partly sunny, with a high near 90. Calm wind becoming southwest 5 to 8 mph in the morning.
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 84. Chance of precipitation is 30%.
Friday Night
Mostly clear, with a low around 60.
Saturday
Mostly sunny, with a high near 85.
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 40. Chance of precipitation is 60%.
Monday
Sunny, with a high near 57.
Monday Night
Mostly clear, with a low around 36.
Tuesday
Sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ashton MD
 39.15°N 77.01°W (Elev. 449 ft)
Last Update:
5:36 pm EDT Apr 14, 2026
Forecast Valid:
5pm EDT Apr 14, 2026-6pm EDT Apr 21, 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