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 with Haze

45°F

7°C

Humidity NA
Wind Speed W 5 mph
Barometer 29.84 in (1012.0 mb)
Dewpoint N/A
Visibility 4.00 mi
Wind Chill42°F (6°C)
Last update 11 Jan 1:56 am EST
Extended Forecast for

Dayton MD

  • Overnight

    Overnight: Cloudy, with a low around 35. Northwest wind 9 to 13 mph, with gusts as high as 26 mph.

    Low: 35 °F

    Cloudy

  • Sunday

    Sunday: A chance of rain and snow showers, mainly before 3pm. Mostly cloudy, then gradually becoming sunny, with a high near 43. Breezy, with a west wind 8 to 13 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 50%.

    High: 43 °F

    Mostly Sunny
    then Chance
    Rain/Snow and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 28. Blustery, with a northwest wind 13 to 21 mph, with gusts as high as 39 mph.

    Low: 28 °F

    Mostly Clear
    and Blustery
    then Mostly
    Clear

  • Monday

    Monday: Sunny, with a high near 43. West wind 7 to 10 mph, with gusts as high as 20 mph.

    High: 43 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 29. Southwest wind around 5 mph becoming calm in the evening.

    Low: 29 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Cloudy, with a high near 50.

    High: 50 °F

    Cloudy

  • Wednesday Night

    Wednesday Night: A chance of rain. Mostly cloudy, with a low around 30. Chance of precipitation is 40%.

    Low: 30 °F

    Chance Rain

Detailed Forecast

Overnight
Cloudy, with a low around 35. Northwest wind 9 to 13 mph, with gusts as high as 26 mph.
Sunday
A chance of rain and snow showers, mainly before 3pm. Mostly cloudy, then gradually becoming sunny, with a high near 43. Breezy, with a west wind 8 to 13 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 50%.
Sunday Night
Mostly clear, with a low around 28. Blustery, with a northwest wind 13 to 21 mph, with gusts as high as 39 mph.
Monday
Sunny, with a high near 43. West wind 7 to 10 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 29. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 47.
Tuesday Night
Mostly cloudy, with a low around 38.
Wednesday
Cloudy, with a high near 50.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 30. Chance of precipitation is 40%.
Thursday
A chance of rain before 1pm, then a chance of rain and snow. Partly sunny, with a high near 37. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 20.
Friday
Partly sunny, with a high near 33.
Friday Night
Partly cloudy, with a low around 22.
Saturday
Mostly sunny, with a high near 38.
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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:
12:53 am EST Jan 11, 2026
Forecast Valid:
2am EST Jan 11, 2026-6pm EST Jan 17, 2026
 
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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