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

40°F

4°C

Humidity 70%
Wind Speed S 6 mph
Barometer 30.36 in (1029.9 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 25 Mar 6:56 am EDT
Extended Forecast for

Dayton MD

  • Today

    Today: A slight chance of rain between 10am and 11am. Partly sunny, with a high near 57. Light south wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 20%.

    High: 57 °F

    Slight Chance
    Rain then
    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 45. South wind around 8 mph.

    Low: 45 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 72. Southwest wind 8 to 11 mph, with gusts as high as 21 mph.

    High: 72 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Rain likely, mainly after 2am. Increasing clouds, with a low around 51. Southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 51 °F

    Slight Chance
    Rain then
    Rain Likely

  • Friday

    Friday: Rain likely, mainly before 2pm. Mostly cloudy, with a high near 59. North wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.

    High: 59 °F

    Rain Likely

  • Friday Night

    Friday Night: A chance of rain before 8pm. Mostly cloudy, with a low around 29. Chance of precipitation is 30%.

    Low: 29 °F

    Chance Rain
    then Partly
    Cloudy

  • Saturday

    Saturday: Sunny, with a high near 47.

    High: 47 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

Detailed Forecast

Today
A slight chance of rain between 10am and 11am. Partly sunny, with a high near 57. Light south wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 20%.
Tonight
Mostly cloudy, with a low around 45. South wind around 8 mph.
Thursday
Partly sunny, with a high near 72. Southwest wind 8 to 11 mph, with gusts as high as 21 mph.
Thursday Night
Rain likely, mainly after 2am. Increasing clouds, with a low around 51. Southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain likely, mainly before 2pm. Mostly cloudy, with a high near 59. North wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.
Friday Night
A chance of rain before 8pm. Mostly cloudy, with a low around 29. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 47.
Saturday Night
Mostly clear, with a low around 31.
Sunday
Sunny, with a high near 55.
Sunday Night
Partly cloudy, with a low around 39.
Monday
Partly sunny, with a high near 63.
Monday Night
Partly cloudy, with a low around 49.
Tuesday
Partly sunny, with a high near 70.
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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:
4:53 am EDT Mar 25, 2026
Forecast Valid:
7am EDT Mar 25, 2026-6pm EDT Mar 31, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation