Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Mostly Cloudy

61°F

16°C

Humidity 72%
Wind Speed N 5 mph
Barometer 29.92 in (1014.4 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 21 Mar 10:56 am EDT
Extended Forecast for

Derwood MD

  • Today

    Today: Sunny, with a high near 65. North wind around 7 mph.

    High: 65 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 47. South wind 3 to 6 mph.

    Low: 47 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 80. Southwest wind 6 to 9 mph.

    High: 80 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of rain before 11pm, then a chance of rain and thunderstorms between 11pm and 2am, then rain likely and possibly a thunderstorm after 2am.  Increasing clouds, with a low around 49. Southwest wind 7 to 9 mph becoming north after midnight.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 49 °F

    Chance Rain
    then Rain
    Likely

  • Monday

    Monday: Rain likely, mainly before 8am.  Partly sunny, with a high near 56. North wind around 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 60%.

    High: 56 °F

    Rain Likely
    then Chance
    Rain

  • Monday Night

    Monday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 65. North wind around 7 mph.
Tonight
Partly cloudy, with a low around 47. South wind 3 to 6 mph.
Sunday
Partly sunny, with a high near 80. Southwest wind 6 to 9 mph.
Sunday Night
A chance of rain before 11pm, then a chance of rain and thunderstorms between 11pm and 2am, then rain likely and possibly a thunderstorm after 2am. Increasing clouds, with a low around 49. Southwest wind 7 to 9 mph becoming north after midnight. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Rain likely, mainly before 8am. Partly sunny, with a high near 56. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Monday Night
Mostly clear, with a low around 32.
Tuesday
Sunny, with a high near 51.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Partly sunny, with a high near 58.
Wednesday Night
Mostly cloudy, with a low around 42.
Thursday
Partly sunny, with a high near 64.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 47. Chance of precipitation is 50%.
Friday
A chance of rain. Partly sunny, with a high near 58. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Derwood MD
 39.12°N 77.13°W (Elev. 348 ft)
10:53 am EDT Mar 21, 2026
11am EDT Mar 21, 2026-6pm EDT Mar 27, 2026
 
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Additional Resources

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