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.

Overcast

48°F

9°C

Humidity 77%
Wind Speed N 8 mph
Barometer 30.08 in (1019.7 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 27 Mar 2:56 pm EDT
Extended Forecast for

Dayton MD

  • This Afternoon

    This Afternoon: Showers likely, mainly before 4pm. Cloudy, with a steady temperature around 46. North wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 46 °F

    Showers
    Likely

  • Tonight

    Tonight: A chance of flurries before 1am, then a chance of flurries after 3am. Cloudy during the early evening, then gradual clearing, with a low around 30. North wind 5 to 10 mph, with gusts as high as 18 mph.

    Low: 30 °F

    Chance
    Flurries

  • Saturday

    Saturday: Sunny, with a high near 46. Northwest wind 10 to 13 mph, with gusts as high as 25 mph.

    High: 46 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 29. Light northwest wind.

    Low: 29 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 57. South wind 6 to 15 mph, with gusts as high as 24 mph.

    High: 57 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 67.

    High: 67 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Showers likely, mainly before 4pm. Cloudy, with a steady temperature around 46. North wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A chance of flurries before 1am, then a chance of flurries after 3am. Cloudy during the early evening, then gradual clearing, with a low around 30. North wind 5 to 10 mph, with gusts as high as 18 mph.
Saturday
Sunny, with a high near 46. Northwest wind 10 to 13 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 29. Light northwest wind.
Sunday
Mostly sunny, with a high near 57. South wind 6 to 15 mph, with gusts as high as 24 mph.
Sunday Night
Mostly cloudy, with a low around 46.
Monday
Partly sunny, with a high near 67.
Monday Night
Mostly cloudy, with a low around 56.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
Partly cloudy, with a low around 62.
Wednesday
A chance of rain. Mostly sunny, with a high near 81. Chance of precipitation is 50%.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 49. Chance of precipitation is 50%.
Thursday
A chance of rain. Mostly cloudy, with a high near 59. Chance of precipitation is 50%.
Thursday Night
Rain likely. Mostly cloudy, with a low around 47. Chance of precipitation is 60%.
Friday
Rain likely. Mostly cloudy, with a high near 59.
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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:
2:23 pm EDT Mar 27, 2026
Forecast Valid:
3pm EDT Mar 27, 2026-6pm EDT Apr 3, 2026
 
Forecast Discussion
 
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Additional Resources

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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