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

41°F

5°C

Humidity 43%
Wind Speed W 8 mph
Barometer 30.27 in (1026.9 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 12 Jan 11:56 am EST
Extended Forecast for

3 Miles W Dayton MD

  • This Afternoon

    This Afternoon: Sunny, with a high near 44. Southwest wind 7 to 9 mph.

    High: 44 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 28. Light west wind.

    Low: 28 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 47. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 47 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37. Southwest wind 6 to 9 mph, with gusts as high as 20 mph.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain. Cloudy, with a high near 49. Southwest wind around 6 mph. Chance of precipitation is 40%.

    High: 49 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Rain likely, mainly after 1am. Mostly cloudy, with a low around 34. Chance of precipitation is 60%.

    Low: 34 °F

    Rain Likely

  • Thursday

    Thursday: A chance of rain before 1pm, then a chance of rain and snow. Mostly cloudy, with a high near 38. Chance of precipitation is 50%.

    High: 38 °F

    Chance Rain
    then Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: A chance of snow. Mostly cloudy, with a low around 19. Chance of precipitation is 30%.

    Low: 19 °F

    Chance Snow

  • Friday

    Friday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 44. Southwest wind 7 to 9 mph.
Tonight
Mostly clear, with a low around 28. Light west wind.
Tuesday
Mostly sunny, with a high near 47. Calm wind becoming south 5 to 8 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 37. Southwest wind 6 to 9 mph, with gusts as high as 20 mph.
Wednesday
A chance of rain. Cloudy, with a high near 49. Southwest wind around 6 mph. Chance of precipitation is 40%.
Wednesday Night
Rain likely, mainly after 1am. Mostly cloudy, with a low around 34. Chance of precipitation is 60%.
Thursday
A chance of rain before 1pm, then a chance of rain and snow. Mostly cloudy, with a high near 38. Chance of precipitation is 50%.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 19. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 32.
Friday Night
Mostly clear, with a low around 22.
Saturday
Mostly sunny, with a high near 40.
Saturday Night
Mostly cloudy, with a low around 22.
Sunday
Mostly sunny, with a high near 31.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Dayton MD
 39.23°N 77.05°W (Elev. 499 ft)
Last Update:
9:53 am EST Jan 12, 2026
Forecast Valid:
12pm EST Jan 12, 2026-6pm EST Jan 18, 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