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

51°F

11°C

Humidity 43%
Wind Speed W 9 mph
Barometer 29.81 in (1011.1 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 14 Mar 12:56 am EDT
Extended Forecast for

Dayton MD

  • Overnight

    Overnight: Mostly clear, with a low around 39. West wind 11 to 14 mph, with gusts as high as 24 mph.

    Low: 39 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 53. West wind 13 to 18 mph, with gusts as high as 30 mph.

    High: 53 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 37. North wind around 5 mph becoming calm.

    Low: 37 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 55. Southeast wind 8 to 16 mph, with gusts as high as 25 mph.

    High: 55 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain. Low around 50. Southeast wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 100%.

    Low: 50 °F

    Rain Likely
    then Rain

  • Monday

    Monday: Rain before 8am, then showers likely between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 66. Breezy. Chance of precipitation is 100%.

    High: 66 °F

    Showers and
    Breezy

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 8pm, then showers likely between 8pm and 2am. Low around 28. Breezy. Chance of precipitation is 80%.

    Low: 28 °F

    Showers and
    Breezy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 35.

    High: 35 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 22.

    Low: 22 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 39. West wind 11 to 14 mph, with gusts as high as 24 mph.
Saturday
Sunny, with a high near 53. West wind 13 to 18 mph, with gusts as high as 30 mph.
Saturday Night
Mostly cloudy, with a low around 37. North wind around 5 mph becoming calm.
Sunday
Mostly cloudy, with a high near 55. Southeast wind 8 to 16 mph, with gusts as high as 25 mph.
Sunday Night
Rain. Low around 50. Southeast wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 100%.
Monday
Rain before 8am, then showers likely between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 66. Breezy. Chance of precipitation is 100%.
Monday Night
Showers and possibly a thunderstorm before 8pm, then showers likely between 8pm and 2am. Low around 28. Breezy. Chance of precipitation is 80%.
Tuesday
Mostly sunny, with a high near 35.
Tuesday Night
Mostly clear, with a low around 22.
Wednesday
Partly sunny, with a high near 40.
Wednesday Night
Mostly cloudy, with a low around 29.
Thursday
Mostly sunny, with a high near 49.
Thursday Night
Partly cloudy, with a low around 36.
Friday
Mostly sunny, with a high near 53.
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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:
10:53 pm EDT Mar 13, 2026
Forecast Valid:
1am EDT Mar 14, 2026-6pm EDT Mar 20, 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