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

28°F

-2°C

Humidity 69%
Wind Speed Calm
Barometer 30.24 in (1026.2 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Last update 4 Jan 9:56 pm EST
Extended Forecast for

Dayton MD

  • Tonight

    Tonight: Mostly cloudy, with a low around 24. Calm wind.

    Low: 24 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 41. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 18 mph.

    High: 41 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 32. Light and variable wind.

    Low: 32 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 50. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 50 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A slight chance of rain before 1am. Mostly cloudy, with a low around 41. Southeast wind around 6 mph becoming west after midnight. Chance of precipitation is 20%.

    Low: 41 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 35.

    Low: 35 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of rain after 1am. Mostly cloudy, with a low around 44. Chance of precipitation is 40%.

    Low: 44 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 24. Calm wind.
Monday
Mostly cloudy, with a high near 41. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Monday Night
Mostly cloudy, with a low around 32. Light and variable wind.
Tuesday
Mostly cloudy, with a high near 50. Calm wind becoming southeast around 6 mph in the afternoon.
Tuesday Night
A slight chance of rain before 1am. Mostly cloudy, with a low around 41. Southeast wind around 6 mph becoming west after midnight. Chance of precipitation is 20%.
Wednesday
Mostly sunny, with a high near 55.
Wednesday Night
Mostly clear, with a low around 35.
Thursday
Mostly sunny, with a high near 53.
Thursday Night
A chance of rain after 1am. Mostly cloudy, with a low around 44. Chance of precipitation is 40%.
Friday
Rain likely, mainly before 1pm. Mostly cloudy, with a high near 56. Chance of precipitation is 60%.
Friday Night
A chance of rain. Mostly cloudy, with a low around 46. Chance of precipitation is 50%.
Saturday
A chance of rain. Mostly cloudy, with a high near 57. Chance of precipitation is 40%.
Saturday Night
Partly cloudy, with a low around 33.
Sunday
Mostly sunny, with a high near 42.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Dayton MD
 39.24°N 76.99°W (Elev. 568 ft)
Last Update:
9:53 pm EST Jan 4, 2026
Forecast Valid:
10pm EST Jan 4, 2026-6pm EST Jan 11, 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