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

46°F

8°C

Humidity 68%
Wind Speed Vrbl 7 mph
Barometer 30.08 in (1020.0 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 27 Mar 3:56 pm EDT
Extended Forecast for

Derwood MD

  • This Afternoon

    This Afternoon: Showers likely, mainly before 5pm. Cloudy, with a steady temperature around 46. North wind around 9 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 46 °F

    Showers
    Likely

  • Tonight

    Tonight: A chance of rain showers and flurries before 2am, then a chance of flurries after 3am. Cloudy, then gradually becoming partly cloudy, with a low around 30. Light north wind increasing to 5 to 9 mph after midnight. Chance of precipitation is 30%.

    Low: 30 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 48. Northwest wind around 11 mph, with gusts as high as 24 mph.

    High: 48 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 30. Light and variable wind.

    Low: 30 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 59. South wind 6 to 14 mph, with gusts as high as 24 mph.

    High: 59 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Showers likely, mainly before 5pm. Cloudy, with a steady temperature around 46. North wind around 9 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A chance of rain showers and flurries before 2am, then a chance of flurries after 3am. Cloudy, then gradually becoming partly cloudy, with a low around 30. Light north wind increasing to 5 to 9 mph after midnight. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 48. Northwest wind around 11 mph, with gusts as high as 24 mph.
Saturday Night
Mostly clear, with a low around 30. Light and variable wind.
Sunday
Mostly sunny, with a high near 59. South wind 6 to 14 mph, with gusts as high as 24 mph.
Sunday Night
Mostly cloudy, with a low around 47.
Monday
Partly sunny, with a high near 68.
Monday Night
Mostly cloudy, with a low around 56.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
Partly cloudy, with a low around 63.
Wednesday
A chance of rain. Mostly sunny, with a high near 82. Chance of precipitation is 50%.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 50. Chance of precipitation is 50%.
Thursday
A chance of rain. Partly sunny, with a high near 60. Chance of precipitation is 50%.
Thursday Night
Rain likely. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Friday
Rain likely. Mostly cloudy, with a high near 60.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Derwood MD
 39.12°N 77.13°W (Elev. 348 ft)
Last Update:
4:54 pm EDT Mar 27, 2026
Forecast Valid:
4pm EDT Mar 27, 2026-6pm EDT Apr 3, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation