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

29°F

-2°C

Humidity 100%
Wind Speed Calm
Barometer 30.20 in (1024.5 mb)
Dewpoint 29°F (-2°C)
Visibility 9.00 mi
Last update 8 Jan 7:56 am EST
Extended Forecast for

4 Miles W Dayton MD

  • Today

    Today: Mostly sunny, with a high near 52. Calm wind.

    High: 52 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 38. Calm wind becoming south around 5 mph after midnight.

    Low: 38 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of rain after 1pm. Increasing clouds, with a high near 56. South wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    High: 56 °F

    Partly Sunny
    then Chance
    Rain

  • Friday Night

    Friday Night: Rain. Low around 50. South wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 50 °F

    Rain

  • Saturday

    Saturday: Rain. High near 62. Light and variable wind becoming east 5 to 8 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 100%.

    High: 62 °F

    Rain

  • Saturday Night

    Saturday Night: Rain, mainly before 1am. Low around 42. Chance of precipitation is 80%.

    Low: 42 °F

    Rain

  • Sunday

    Sunday: Mostly cloudy, with a high near 49.

    High: 49 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 40.

    High: 40 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 52. Calm wind.
Tonight
Mostly cloudy, with a low around 38. Calm wind becoming south around 5 mph after midnight.
Friday
A chance of rain after 1pm. Increasing clouds, with a high near 56. South wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Friday Night
Rain. Low around 50. South wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Rain. High near 62. Light and variable wind becoming east 5 to 8 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 100%.
Saturday Night
Rain, mainly before 1am. Low around 42. Chance of precipitation is 80%.
Sunday
Mostly cloudy, with a high near 49.
Sunday Night
Partly cloudy, with a low around 27.
Monday
Sunny, with a high near 40.
Monday Night
Mostly clear, with a low around 27.
Tuesday
Mostly sunny, with a high near 47.
Tuesday Night
Partly cloudy, with a low around 32.
Wednesday
Mostly cloudy, with a high near 47.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Dayton MD
 39.25°N 77.05°W (Elev. 397 ft)
Last Update:
6:53 am EST Jan 8, 2026
Forecast Valid:
8am EST Jan 8, 2026-6pm EST Jan 14, 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