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.

Fair

19°C

66°F

Humidity 90%
Wind Speed Calm
Barometer 1022.0 mb (30.15 in)
Dewpoint 17°C (63°F)
Visibility 16 km
Last update 26 Jul 10:56 pm EDT
Extended Forecast for

Derwood MD

  • Tonight

    Tonight: Mostly clear, with a low around 16. Calm wind becoming north 5 to 8 km/h after midnight.

    Low: 16 °C

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 31. Northeast wind 8 to 10 km/h.

    High: 31 °C

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 18. Calm wind.

    Low: 18 °C

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 33. Calm wind.

    High: 33 °C

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 21. South wind 8 to 10 km/h.

    Low: 21 °C

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 33.

    High: 33 °C

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 22. Chance of precipitation is 30%.

    Low: 22 °C

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 30. Chance of precipitation is 50%.

    High: 30 °C

    Mostly Cloudy
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 22. Chance of precipitation is 40%.

    Low: 22 °C

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 16. Calm wind becoming north 5 to 8 km/h after midnight.
Saturday
Sunny, with a high near 31. Northeast wind 8 to 10 km/h.
Saturday Night
Mostly clear, with a low around 18. Calm wind.
Sunday
Sunny, with a high near 33. Calm wind.
Sunday Night
Partly cloudy, with a low around 21. South wind 8 to 10 km/h.
Monday
Mostly sunny, with a high near 33.
Monday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 22. Chance of precipitation is 30%.
Tuesday
A chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 30. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 22. Chance of precipitation is 40%.
Wednesday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 32. Chance of precipitation is 50%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 22. Chance of precipitation is 40%.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 33. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 23. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 34. Chance of precipitation is 30%.
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Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Derwood MD
 39.12°N 77.13°W (Elev. 348 m)
Last Update:
10:29 pm EDT Jul 26, 2024
Forecast Valid:
11pm EDT Jul 26, 2024-6pm EDT Aug 2, 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