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

52°F

11°C

Humidity 53%
Wind Speed SW 8 mph
Barometer 30.09 in (1020.3 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 20 Mar 9:56 am EDT
Extended Forecast for

Dayton MD

  • Today

    Today: Increasing clouds, with a high near 67. South wind 6 to 16 mph, with gusts as high as 26 mph.

    High: 67 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Showers likely, mainly before 9pm. Cloudy during the early evening, then gradual clearing, with a low around 47. Southwest wind 6 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 47 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 61. North wind around 8 mph.

    High: 61 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 44. Light and variable wind becoming southeast around 5 mph after midnight.

    Low: 44 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 73. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 73 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of rain. Mostly cloudy, with a low around 50. Chance of precipitation is 50%.

    Low: 50 °F

    Chance Rain

  • Monday

    Monday: A chance of rain before 2pm. Partly sunny, with a high near 57. Chance of precipitation is 40%.

    High: 57 °F

    Chance Rain

  • Monday Night

    Monday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 67. South wind 6 to 16 mph, with gusts as high as 26 mph.
Tonight
Showers likely, mainly before 9pm. Cloudy during the early evening, then gradual clearing, with a low around 47. Southwest wind 6 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Sunny, with a high near 61. North wind around 8 mph.
Saturday Night
Mostly cloudy, with a low around 44. Light and variable wind becoming southeast around 5 mph after midnight.
Sunday
Partly sunny, with a high near 73. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 50. Chance of precipitation is 50%.
Monday
A chance of rain before 2pm. Partly sunny, with a high near 57. Chance of precipitation is 40%.
Monday Night
Mostly clear, with a low around 30.
Tuesday
Sunny, with a high near 49.
Tuesday Night
Mostly cloudy, with a low around 36.
Wednesday
Mostly cloudy, with a high near 54.
Wednesday Night
Mostly cloudy, with a low around 39.
Thursday
Partly sunny, with a high near 62.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Dayton MD
 39.24°N 76.99°W (Elev. 568 ft)
Last Update:
7:53 am EDT Mar 20, 2026
Forecast Valid:
10am EDT Mar 20, 2026-6pm EDT Mar 26, 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