Hazardous Coastal Conditions for the Mid-Atlantic; Storm System Approaching Southern Alaska

A Nor'easter will create hazardous marine and coastal conditions along the Mid-Atlantic coast through mid-week, with significant coastal flooding and beach erosion possible. Meanwhile, another strong storm system is forecast to bring high winds and heavy precipitation to portions of southern Alaska. Elsewhere, relatively benign weather is expected through the first half of the work week. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

58°F

14°C

Humidity 42%
Wind Speed Calm
Barometer 30.54 in (1035.9 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 18 Oct 5:56 pm EDT
Extended Forecast for

3 Miles W Dayton MD

Frost Advisory October 19, 01:00am until October 19, 09:00am
Click here for hazard details and duration
Frost Advisory
  • Tonight

    Tonight: Areas of frost after 3am.  Otherwise, clear, with a low around 35. Light and variable wind.

    Low: 35 °F

    Clear then
    Areas Frost

  • Monday

    Monday: Areas of frost before 9am.  Otherwise, sunny, with a high near 64. North wind 5 to 9 mph.

    High: 64 °F

    Areas Frost
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 44. North wind 6 to 9 mph, with gusts as high as 20 mph.

    Low: 44 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 67. North wind around 11 mph, with gusts as high as 21 mph.

    High: 67 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 43. North wind around 8 mph, with gusts as high as 18 mph.

    Low: 43 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

Detailed Forecast

Tonight
Areas of frost after 3am. Otherwise, clear, with a low around 35. Light and variable wind.
Monday
Areas of frost before 9am. Otherwise, sunny, with a high near 64. North wind 5 to 9 mph.
Monday Night
Mostly clear, with a low around 44. North wind 6 to 9 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 67. North wind around 11 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly clear, with a low around 43. North wind around 8 mph, with gusts as high as 18 mph.
Wednesday
Sunny, with a high near 63.
Wednesday Night
Mostly clear, with a low around 41.
Thursday
Sunny, with a high near 65.
Thursday Night
Mostly clear, with a low around 45.
Friday
Sunny, with a high near 61.
Friday Night
Mostly clear, with a low around 40.
Saturday
Sunny, with a high near 58.
Saturday Night
Mostly clear, with a low around 39.
Sunday
Sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Dayton MD
 39.23°N 77.05°W (Elev. 499 ft)
6:42 pm EDT Oct 18, 2026
6pm EDT Oct 18, 2026-6pm EDT Oct 25, 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