National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fog/Mist

29°F

-2°C

Humidity 96%
Wind Speed NW 3 mph
Barometer 29.94 in (1015.7 mb)
Dewpoint 28°F (-2°C)
Visibility 5.00 mi
Last update 6 Dec 3:56 am EST
Extended Forecast for

Derwood MD

Winter Weather Advisory December 6, 04:57am until December 6, 07:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory December 6, 04:57am until December 6, 07:00am

    NOW until 7:00am Sat

    Winter Weather Advisory

  • Overnight

    Low: 26 °F

    Slight Chance
    Freezing Rain

  • Saturday

    Saturday: Patchy fog before 11am. Otherwise, partly sunny, with a high near 42. Light west wind.

    High: 42 °F

    Patchy Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 42. Calm wind becoming south around 6 mph in the afternoon.

    High: 42 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 26. Calm wind becoming north 5 to 8 mph after midnight.

    Low: 26 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 34.

    High: 34 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

Detailed Forecast

Overnight
A slight chance of freezing rain. Mostly cloudy, with a low around 26. Calm wind. Chance of precipitation is 20%.
Saturday
Patchy fog before 11am. Otherwise, partly sunny, with a high near 42. Light west wind.
Saturday Night
Partly cloudy, with a low around 26. Calm wind.
Sunday
Partly sunny, with a high near 42. Calm wind becoming south around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 26. Calm wind becoming north 5 to 8 mph after midnight.
Monday
Partly sunny, with a high near 34.
Monday Night
Partly cloudy, with a low around 17.
Tuesday
Mostly sunny, with a high near 36.
Tuesday Night
Mostly cloudy, with a low around 29.
Wednesday
Mostly cloudy, with a high near 46.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 33. Chance of precipitation is 30%.
Thursday
Partly sunny, with a high near 43.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 38.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Derwood MD
 39.12°N 77.13°W (Elev. 348 ft)
Last Update:
3:53 am EST Dec 6, 2025
Forecast Valid:
4am EST Dec 6, 2025-6pm EST Dec 12, 2025
 
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