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

Super 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 the Northern Mariana Islands. Severe thunderstorms and heavy rain are expected from the Southern Plains to the Great Lakes through Tuesday. Heavy snow is expected in the Pacific Northwest. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

57°F

14°C

Humidity 90%
Wind Speed Calm
Barometer 30.06 in (1019.0 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 14 Apr 2:56 am EDT
Extended Forecast for

Rockville MD

  • Overnight

    Overnight: Partly cloudy, with a low around 64. West wind around 5 mph.

    Low: 64 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 87. Light southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 26 mph.

    High: 87 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 69. Southwest wind 5 to 8 mph.

    Low: 69 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 91. Southwest wind 5 to 13 mph, with gusts as high as 23 mph.

    High: 91 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 71. Southwest wind 5 to 8 mph.

    Low: 71 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 90.

    High: 90 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A chance of showers after 2am.  Mostly cloudy, with a low around 69. Chance of precipitation is 30%.

    Low: 69 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: A chance of showers.  Partly sunny, with a high near 83. Chance of precipitation is 40%.

    High: 83 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 64. West wind around 5 mph.
Tuesday
Mostly sunny, with a high near 87. Light southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 26 mph.
Tuesday Night
Partly cloudy, with a low around 69. Southwest wind 5 to 8 mph.
Wednesday
Mostly sunny, with a high near 91. Southwest wind 5 to 13 mph, with gusts as high as 23 mph.
Wednesday Night
Partly cloudy, with a low around 71. Southwest wind 5 to 8 mph.
Thursday
Partly sunny, with a high near 90.
Thursday Night
A chance of showers after 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 30%.
Friday
A chance of showers. Partly sunny, with a high near 83. Chance of precipitation is 40%.
Friday Night
Partly cloudy, with a low around 62.
Saturday
Mostly sunny, with a high near 86.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 30%.
Sunday
A chance of showers. Mostly cloudy, with a high near 71. Chance of precipitation is 50%.
Sunday Night
Partly cloudy, with a low around 44.
Monday
Sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
Rockville MD
 39.08°N 77.16°W (Elev. 430 ft)
2:23 am EDT Apr 14, 2026
3am EDT Apr 14, 2026-6pm EDT Apr 20, 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