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.

A Few Clouds

70°F

21°C

Humidity 55%
Wind Speed Calm
Barometer 29.76 in (1008.6 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 27 Mar 2:56 am EDT
Extended Forecast for

Dayton MD

  • Overnight

    Overnight: Showers likely, mainly after 5am. Cloudy, with a low around 50. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Showers
    Likely

  • Friday

    Friday: Showers. Temperature falling to around 46 by 4pm. North wind 10 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 57 °F⇓

    Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 30. North wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 30 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 45. Northwest wind 11 to 14 mph, with gusts as high as 24 mph.

    High: 45 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 30. Northwest wind around 5 mph becoming calm in the evening.

    Low: 30 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of showers after 8pm. Mostly cloudy, with a low around 51. Chance of precipitation is 30%.

    Low: 51 °F

    Chance
    Showers

Detailed Forecast

Overnight
Showers likely, mainly after 5am. Cloudy, with a low around 50. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers. Temperature falling to around 46 by 4pm. North wind 10 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Mostly cloudy, with a low around 30. North wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 45. Northwest wind 11 to 14 mph, with gusts as high as 24 mph.
Saturday Night
Mostly clear, with a low around 30. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 56.
Sunday Night
Partly cloudy, with a low around 44.
Monday
Partly sunny, with a high near 63.
Monday Night
A chance of showers after 8pm. Mostly cloudy, with a low around 51. Chance of precipitation is 30%.
Tuesday
A chance of showers after 2pm. Partly sunny, with a high near 74. Chance of precipitation is 30%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 30%.
Wednesday
A chance of showers. Partly sunny, with a high near 81. Chance of precipitation is 40%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 30%.
Thursday
A chance of showers. Partly sunny, with a high near 76. Chance of precipitation is 40%.
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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:
3:42 am EDT Mar 27, 2026
Forecast Valid:
3am EDT Mar 27, 2026-6pm EDT Apr 2, 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