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

68°F

20°C

Humidity 90%
Wind Speed SE 3 mph
Barometer 30.10 in (1020.6 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 5 May 6:56 pm EDT
Extended Forecast for

Derwood MD

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly before midnight. Patchy fog after 11pm. Otherwise, cloudy, with a low around 63. South wind around 7 mph. Chance of precipitation is 30%.

    Low: 63 °F

    Scattered
    Showers and
    Patchy Fog

  • Monday

    Monday: A chance of showers and thunderstorms, mainly after 5pm. Areas of fog before 11am. Otherwise, cloudy, with a high near 79. South wind around 6 mph becoming west in the afternoon. Chance of precipitation is 30%.

    High: 79 °F

    Areas Fog
    then Chance
    T-storms

  • Monday Night

    Monday Night: Showers and thunderstorms likely before 2am, then a chance of showers. Patchy fog after 1am. Otherwise, cloudy, with a low around 63. Light northeast wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Showers
    Likely and
    Patchy Fog

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 11am. Mostly cloudy, with a high near 79. East wind around 6 mph becoming south in the afternoon. Chance of precipitation is 50%.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 65. South wind around 6 mph becoming southwest after midnight. Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 20%.

    High: 85 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers after 2am. Partly cloudy, with a low around 63. Chance of precipitation is 40%.

    Low: 63 °F

    Partly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: Showers likely, then showers and possibly a thunderstorm after 2pm. High near 76. Chance of precipitation is 90%.

    High: 76 °F

    Showers
    Likely then
    Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 60. Chance of precipitation is 80%.

    Low: 60 °F

    Showers then
    Chance
    T-storms

Detailed Forecast

Tonight
Scattered showers and thunderstorms, mainly before midnight. Patchy fog after 11pm. Otherwise, cloudy, with a low around 63. South wind around 7 mph. Chance of precipitation is 30%.
Monday
A chance of showers and thunderstorms, mainly after 5pm. Areas of fog before 11am. Otherwise, cloudy, with a high near 79. South wind around 6 mph becoming west in the afternoon. Chance of precipitation is 30%.
Monday Night
Showers and thunderstorms likely before 2am, then a chance of showers. Patchy fog after 1am. Otherwise, cloudy, with a low around 63. Light northeast wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
A chance of showers, with thunderstorms also possible after 11am. Mostly cloudy, with a high near 79. East wind around 6 mph becoming south in the afternoon. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 65. South wind around 6 mph becoming southwest after midnight. Chance of precipitation is 30%.
Wednesday
A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 20%.
Wednesday Night
A chance of showers after 2am. Partly cloudy, with a low around 63. Chance of precipitation is 40%.
Thursday
Showers likely, then showers and possibly a thunderstorm after 2pm. High near 76. Chance of precipitation is 90%.
Thursday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 60. Chance of precipitation is 80%.
Friday
A chance of showers after 8am. Partly sunny, with a high near 72. Chance of precipitation is 50%.
Friday Night
A chance of showers. Partly cloudy, with a low around 52. Chance of precipitation is 40%.
Saturday
Mostly sunny, with a high near 68.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
Mostly sunny, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
Derwood MD
 39.12°N 77.13°W (Elev. 348 ft)
Last Update:
4:32 pm EDT May 5, 2024
Forecast Valid:
7pm EDT May 5, 2024-6pm EDT May 12, 2024
 
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