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.

Fog/Mist

46°F

8°C

Humidity NA
Wind Speed Calm
Barometer 29.83 in (1011.6 mb)
Dewpoint N/A
Visibility 1.00 mi
Last update 21 Mar 6:56 am EDT
Extended Forecast for

Washington Grove MD

  • Today

    Today: Mostly sunny, with a high near 64. North wind around 7 mph.

    High: 64 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 47. Light and variable wind becoming southeast around 6 mph in the evening.

    Low: 47 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 80. Southwest wind 6 to 9 mph, with gusts as high as 18 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 around 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 55. North wind around 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

    High: 55 °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 50.

    High: 50 °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
Mostly sunny, with a high near 64. North wind around 7 mph.
Tonight
Partly cloudy, with a low around 47. Light and variable wind becoming southeast around 6 mph in the evening.
Sunday
Partly sunny, with a high near 80. Southwest wind 6 to 9 mph, with gusts as high as 18 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 around 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 55. North wind around 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Monday Night
Mostly clear, with a low around 32.
Tuesday
Sunny, with a high near 50.
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 57. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Washington Grove MD
 39.13°N 77.18°W (Elev. 459 ft)
Last Update:
4:53 am EDT Mar 21, 2026
Forecast Valid:
7am EDT Mar 21, 2026-6pm EDT Mar 27, 2026
 
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