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

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

63°F

17°C

Humidity 45%
Wind Speed SE 3 mph
Barometer 30.00 in (1017.1 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 9 Mar 8:56 pm EDT
Extended Forecast for

Dayton MD

  • Tonight

    Tonight: Mostly clear, with a low around 47. Light and variable wind.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 76. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 76 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 58. Light south wind.

    Low: 58 °F

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 76. Light south wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 50%.

    High: 76 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 43. South wind 11 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.

    Low: 43 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: Showers likely, mainly before 2pm. Mostly cloudy, with a high near 52. Breezy. Chance of precipitation is 60%.

    High: 52 °F

    Showers
    Likely and
    Breezy

  • Thursday Night

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

    Low: 30 °F

    Chance
    Showers then
    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 51.

    High: 51 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 47. Light and variable wind.
Tuesday
Sunny, with a high near 76. Calm wind becoming south 5 to 7 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 58. Light south wind.
Wednesday
A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 76. Light south wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 50%.
Wednesday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 43. South wind 11 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.
Thursday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 52. Breezy. Chance of precipitation is 60%.
Thursday Night
A chance of showers before 8pm. Partly cloudy, with a low around 30. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 51.
Friday Night
Mostly cloudy, with a low around 39.
Saturday
Partly sunny, with a high near 54.
Saturday Night
Mostly cloudy, with a low around 40.
Sunday
Mostly cloudy, with a high near 64.
Sunday Night
Showers likely. Mostly cloudy, with a low around 43. Chance of precipitation is 60%.
Monday
Showers likely. Mostly cloudy, with a high near 52. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Dayton MD
 39.24°N 76.99°W (Elev. 568 ft)
Last Update:
9:02 pm EDT Mar 9, 2026
Forecast Valid:
9pm EDT Mar 9, 2026-6pm EDT Mar 16, 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