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.

Fair

67°F

19°C

Humidity 93%
Wind Speed S 9 mph
Barometer 29.66 in (1005.2 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 11 Mar 10:56 pm EDT
Extended Forecast for

Derwood MD

  • Tonight

    Tonight: Showers likely, mainly after 5am. Mostly cloudy, with a low around 44. Southwest wind around 11 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 44 °F

    Showers
    Likely

  • Thursday

    Thursday: Rain, possibly mixed with snow showers, mainly before 1pm. Temperature falling to around 40 by 2pm. Breezy, with a northwest wind 14 to 22 mph, with gusts as high as 39 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 46 °F⇓

    Rain/Snow and
    Breezy then
    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 30. Northwest wind 6 to 11 mph becoming light west after midnight. Winds could gust as high as 22 mph.

    Low: 30 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 52. Breezy, with a south wind 6 to 11 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 33 mph.

    High: 52 °F

    Partly Sunny
    then Partly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 40. Southwest wind 8 to 14 mph, with gusts as high as 25 mph.

    Low: 40 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 54.

    High: 54 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Sunday

    Sunday: Cloudy, with a high near 57.

    High: 57 °F

    Cloudy

  • Sunday Night

    Sunday Night: Rain likely, mainly after 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 70%.

    Low: 49 °F

    Chance Rain
    then Rain
    Likely

Detailed Forecast

Tonight
Showers likely, mainly after 5am. Mostly cloudy, with a low around 44. Southwest wind around 11 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain, possibly mixed with snow showers, mainly before 1pm. Temperature falling to around 40 by 2pm. Breezy, with a northwest wind 14 to 22 mph, with gusts as high as 39 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Thursday Night
Mostly clear, with a low around 30. Northwest wind 6 to 11 mph becoming light west after midnight. Winds could gust as high as 22 mph.
Friday
Partly sunny, with a high near 52. Breezy, with a south wind 6 to 11 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 33 mph.
Friday Night
Partly cloudy, with a low around 40. Southwest wind 8 to 14 mph, with gusts as high as 25 mph.
Saturday
Mostly sunny, with a high near 54.
Saturday Night
Mostly cloudy, with a low around 39.
Sunday
Cloudy, with a high near 57.
Sunday Night
Rain likely, mainly after 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 70%.
Monday
Rain. High near 65. Chance of precipitation is 80%.
Monday Night
Rain likely. Mostly cloudy, with a low around 27. Chance of precipitation is 60%.
Tuesday
Mostly sunny, with a high near 38.
Tuesday Night
Mostly clear, with a low around 23.
Wednesday
Mostly sunny, with a high near 42.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Derwood MD
 39.12°N 77.13°W (Elev. 348 ft)
Last Update:
10:53 pm EDT Mar 11, 2026
Forecast Valid:
11pm EDT Mar 11, 2026-6pm EDT Mar 18, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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