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.

Fog

48°F

9°C

Humidity NA
Wind Speed Calm
Barometer 30.13 in (1021.9 mb)
Dewpoint N/A
Visibility 0.50 mi
Last update 9 Jan 11:56 pm EST
Extended Forecast for

Dayton MD

  • Overnight

    Overnight: Cloudy, with a low around 42. West wind around 5 mph becoming north.

    Low: 42 °F

    Cloudy

  • Saturday

    Saturday: Rain, mainly before 4pm. High near 46. East wind around 6 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 46 °F

    Rain

  • Saturday Night

    Saturday Night: Rain likely, mainly between 7pm and 1am. Cloudy, with a low around 37. Light and variable wind becoming west 6 to 11 mph after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 37 °F

    Rain Likely

  • Sunday

    Sunday: A slight chance of rain and snow showers between 1pm and 2pm, then a slight chance of snow showers after 2pm. Mostly sunny, with a high near 42. Breezy, with a west wind 13 to 23 mph, with gusts as high as 39 mph. Chance of precipitation is 20%.

    High: 42 °F

    Mostly Sunny
    then Slight
    Chance
    Rain/Snow and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 28. Breezy, with a west wind 15 to 21 mph, with gusts as high as 28 mph.

    Low: 28 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Monday

    Monday: Sunny, with a high near 41.

    High: 41 °F

    Sunny

  • Monday Night

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

    Low: 29 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 47.

    High: 47 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Cloudy, with a low around 42. West wind around 5 mph becoming north.
Saturday
Rain, mainly before 4pm. High near 46. East wind around 6 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Saturday Night
Rain likely, mainly between 7pm and 1am. Cloudy, with a low around 37. Light and variable wind becoming west 6 to 11 mph after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
A slight chance of rain and snow showers between 1pm and 2pm, then a slight chance of snow showers after 2pm. Mostly sunny, with a high near 42. Breezy, with a west wind 13 to 23 mph, with gusts as high as 39 mph. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 28. Breezy, with a west wind 15 to 21 mph, with gusts as high as 28 mph.
Monday
Sunny, with a high near 41.
Monday Night
Mostly clear, with a low around 29.
Tuesday
Sunny, with a high near 47.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
Mostly cloudy, with a high near 47.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.
Thursday
A chance of rain. Partly sunny, with a high near 37. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 20.
Friday
Mostly sunny, with a high near 34.
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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:
9:53 pm EST Jan 9, 2026
Forecast Valid:
12am EST Jan 10, 2026-6pm EST Jan 16, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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