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

50°F

10°C

Humidity 61%
Wind Speed S 9 mph
Barometer 30.10 in (1020.8 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 26 Mar 12:56 am EDT
Extended Forecast for

Dayton MD

  • Overnight

    Overnight: Mostly cloudy, with a low around 46. South wind around 11 mph.

    Low: 46 °F

    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of rain between 3pm and 5pm. Mostly sunny, with a high near 72. Southwest wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    High: 72 °F

    Slight Chance
    Rain

  • Thursday Night

    Thursday Night: A slight chance of rain before 7pm, then rain likely and possibly a thunderstorm after 2am. Increasing clouds, with a low around 53. Southwest wind 11 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 53 °F

    Partly Cloudy
    then Rain
    Likely

  • Friday

    Friday: Rain. High near 60. North wind 14 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 60 °F

    Rain

  • Friday Night

    Friday Night: Rain likely, possibly mixing with snow after 11pm, then gradually ending. Mostly cloudy, with a low around 31. North wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 31 °F

    Rain/Snow
    Likely then
    Slight Chance
    Rain/Snow

  • Saturday

    Saturday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

  • Saturday Night

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

    Low: 29 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 46. South wind around 11 mph.
Thursday
A slight chance of rain between 3pm and 5pm. Mostly sunny, with a high near 72. Southwest wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Thursday Night
A slight chance of rain before 7pm, then rain likely and possibly a thunderstorm after 2am. Increasing clouds, with a low around 53. Southwest wind 11 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Rain. High near 60. North wind 14 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Rain likely, possibly mixing with snow after 11pm, then gradually ending. Mostly cloudy, with a low around 31. North wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Saturday
Sunny, with a high near 46.
Saturday Night
Mostly clear, with a low around 29.
Sunday
Sunny, with a high near 53.
Sunday Night
Partly cloudy, with a low around 39.
Monday
Partly sunny, with a high near 61.
Monday Night
Mostly cloudy, with a low around 48.
Tuesday
A chance of rain. Partly sunny, with a high near 64. Chance of precipitation is 30%.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 51. Chance of precipitation is 30%.
Wednesday
A chance of rain. Partly sunny, with a high near 73. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Dayton MD
 39.24°N 76.99°W (Elev. 568 ft)
Last Update:
10:55 pm EDT Mar 25, 2026
Forecast Valid:
1am EDT Mar 26, 2026-6pm EDT Apr 1, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation