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

24°F

-4°C

Humidity 84%
Wind Speed S 5 mph
Barometer 30.22 in (1025.4 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 5 Jan 12:56 am EST
Extended Forecast for

Dayton MD

  • Overnight

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

    Low: 24 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 40. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 18 mph.

    High: 40 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 32. South wind around 5 mph becoming calm in the evening.

    Low: 32 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 49. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 49 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41. South wind 5 to 7 mph becoming west after midnight.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 54.

    High: 54 °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 54.

    High: 54 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of rain after 1am. Mostly cloudy, with a low around 45. Chance of precipitation is 30%.

    Low: 45 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Overnight
Mostly cloudy, with a low around 24. Calm wind.
Monday
Mostly cloudy, with a high near 40. 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. South wind around 5 mph becoming calm in the evening.
Tuesday
Mostly cloudy, with a high near 49. Calm wind becoming southeast around 6 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 41. South wind 5 to 7 mph becoming west after midnight.
Wednesday
Mostly sunny, with a high near 54.
Wednesday Night
Mostly clear, with a low around 35.
Thursday
Mostly sunny, with a high near 54.
Thursday Night
A chance of rain after 1am. Mostly cloudy, with a low around 45. Chance of precipitation is 30%.
Friday
A chance of rain. Mostly cloudy, with a high near 61. Chance of precipitation is 50%.
Friday Night
Rain likely. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.
Saturday
Rain likely. Mostly cloudy, with a high near 61. Chance of precipitation is 60%.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 35. Chance of precipitation is 30%.
Sunday
Partly 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:
12:53 am EST Jan 5, 2026
Forecast Valid:
1am EST Jan 5, 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