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Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

64°F

18°C

Humidity 50%
Wind Speed SW 3 mph
Barometer 30.08 in (1020.0 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 10 Mar 9:56 am EDT
Extended Forecast for

Derwood MD

  • Today

    Today: Sunny, with a high near 78. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 78 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 59. South wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 79. Light south wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 50%.

    High: 79 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of rain and thunderstorms, then showers likely after 1am. Mostly cloudy, with a low around 50. South wind 11 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 50 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: Rain showers likely before 5pm, then a slight chance of rain and snow showers. Mostly cloudy, with a high near 52. Breezy, with a northwest wind 16 to 21 mph, with gusts as high as 36 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 52 °F

    Showers
    Likely and
    Breezy then
    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 53. Breezy.

    High: 53 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 54.

    High: 54 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 78. Calm wind becoming south 5 to 8 mph in the afternoon.
Tonight
Mostly clear, with a low around 59. South wind around 5 mph becoming calm in the evening.
Wednesday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 79. Light south wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 50%.
Wednesday Night
A chance of rain and thunderstorms, then showers likely after 1am. Mostly cloudy, with a low around 50. South wind 11 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Rain showers likely before 5pm, then a slight chance of rain and snow showers. Mostly cloudy, with a high near 52. Breezy, with a northwest wind 16 to 21 mph, with gusts as high as 36 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday Night
Partly cloudy, with a low around 31.
Friday
Partly sunny, with a high near 53. Breezy.
Friday Night
Mostly cloudy, with a low around 40.
Saturday
Mostly sunny, with a high near 54.
Saturday Night
Mostly cloudy, with a low around 41.
Sunday
Mostly cloudy, with a high near 64.
Sunday Night
Showers. Low around 46. Chance of precipitation is 80%.
Monday
Showers. High near 54. Chance of precipitation is 80%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Derwood MD
 39.14°N 77.12°W (Elev. 400 ft)
Last Update:
7:53 am EDT Mar 10, 2026
Forecast Valid:
10am EDT Mar 10, 2026-6pm EDT Mar 16, 2026
 
Forecast Discussion
 
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Additional Resources

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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