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

31°F

-1°C

Humidity 69%
Wind Speed Calm
Barometer 30.28 in (1027.6 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Last update 1 Dec 6:56 pm EST
Extended Forecast for

Dayton MD

  • Tonight

    Tonight: A chance of snow and sleet between 4am and 5am, then sleet likely. Mostly cloudy, with a low around 29. Southeast wind 3 to 5 mph. Chance of precipitation is 60%. Total nighttime snow and sleet accumulation of less than a half inch possible.

    Low: 29 °F

    Mostly Cloudy
    then
    Snow/Sleet
    Likely

  • Tuesday

    Tuesday: Rain, possibly mixed with snow and sleet before 2pm, then a chance of rain between 2pm and 4pm. High near 39. Light and variable wind becoming northwest 5 to 10 mph in the afternoon. Chance of precipitation is 100%. New snow and sleet accumulation of less than a half inch possible.

    High: 39 °F

    Wintry Mix
    then Rain

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 26. Northwest wind 10 to 13 mph, with gusts as high as 18 mph.

    Low: 26 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 39. Northwest wind 5 to 8 mph becoming calm in the afternoon.

    High: 39 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 25. Calm wind.

    Low: 25 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 40.

    High: 40 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 33.

    High: 33 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of snow. Mostly cloudy, with a low around 25. Chance of precipitation is 40%.

    Low: 25 °F

    Chance Snow

Detailed Forecast

Tonight
A chance of snow and sleet between 4am and 5am, then sleet likely. Mostly cloudy, with a low around 29. Southeast wind 3 to 5 mph. Chance of precipitation is 60%. Total nighttime snow and sleet accumulation of less than a half inch possible.
Tuesday
Rain, possibly mixed with snow and sleet before 2pm, then a chance of rain between 2pm and 4pm. High near 39. Light and variable wind becoming northwest 5 to 10 mph in the afternoon. Chance of precipitation is 100%. New snow and sleet accumulation of less than a half inch possible.
Tuesday Night
Mostly clear, with a low around 26. Northwest wind 10 to 13 mph, with gusts as high as 18 mph.
Wednesday
Sunny, with a high near 39. Northwest wind 5 to 8 mph becoming calm in the afternoon.
Wednesday Night
Mostly clear, with a low around 25. Calm wind.
Thursday
Partly sunny, with a high near 40.
Thursday Night
Partly cloudy, with a low around 17.
Friday
Partly sunny, with a high near 33.
Friday Night
A chance of snow. Mostly cloudy, with a low around 25. Chance of precipitation is 40%.
Saturday
Partly sunny, with a high near 41.
Saturday Night
Mostly cloudy, with a low around 27.
Sunday
Partly sunny, with a high near 41.
Sunday Night
Mostly cloudy, with a low around 23.
Monday
Mostly sunny, with a high near 34.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Dayton MD
 39.22°N 77°W (Elev. 492 ft)
Last Update:
6:53 pm EST Dec 1, 2025
Forecast Valid:
7pm EST Dec 1, 2025-6pm EST Dec 8, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation