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

36°F

2°C

Humidity 79%
Wind Speed Vrbl 3 mph
Barometer 30.18 in (1023.6 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 27 Dec 6:56 pm EST
Extended Forecast for

Gaithersburg MD

  • Tonight

    Tonight: Mostly cloudy, with a low around 27. Light and variable wind.

    Low: 27 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of rain after 1pm. Mostly cloudy, with a high near 47. Calm wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 20%.

    High: 47 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Sunday Night

    Sunday Night: A slight chance of rain after 1am. Patchy fog after 10pm. Otherwise, cloudy, with a low around 41. South wind 9 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 41 °F

    Patchy Fog
    then Slight
    Chance Rain
    and Patchy
    Fog

  • Monday

    Monday: A chance of rain, mainly before 1pm. Patchy fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 55. Breezy, with a southwest wind 14 to 20 mph becoming west in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 40%.

    High: 55 °F

    Chance Rain
    and Patchy
    Fog

  • Monday Night

    Monday Night: Partly cloudy, with a low around 26. West wind around 18 mph, with gusts as high as 34 mph.

    Low: 26 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 34. Breezy.

    High: 34 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 27. Light and variable wind.
Sunday
A slight chance of rain after 1pm. Mostly cloudy, with a high near 47. Calm wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 20%.
Sunday Night
A slight chance of rain after 1am. Patchy fog after 10pm. Otherwise, cloudy, with a low around 41. South wind 9 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Monday
A chance of rain, mainly before 1pm. Patchy fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 55. Breezy, with a southwest wind 14 to 20 mph becoming west in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 40%.
Monday Night
Partly cloudy, with a low around 26. West wind around 18 mph, with gusts as high as 34 mph.
Tuesday
Mostly sunny, with a high near 34. Breezy.
Tuesday Night
Partly cloudy, with a low around 24.
Wednesday
Mostly sunny, with a high near 41.
Wednesday Night
Mostly cloudy, with a low around 27.
New Year's Day
Mostly cloudy, with a high near 40.
Thursday Night
Partly cloudy, with a low around 21.
Friday
Sunny, with a high near 35.
Friday Night
Partly cloudy, with a low around 21.
Saturday
Partly sunny, with a high near 39.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Gaithersburg MD
 39.13°N 77.21°W (Elev. 404 ft)
Last Update:
7:08 pm EST Dec 27, 2025
Forecast Valid:
7pm EST Dec 27, 2025-6pm EST Jan 3, 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