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

23°F

-5°C

Humidity 68%
Wind Speed NW 5 mph
Barometer 30.39 in (1031.3 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill17°F (-8°C)
Last update 18 Mar 6:56 am EDT
Extended Forecast for

Washington Grove MD

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 41. Calm wind becoming south around 6 mph in the afternoon.

    High: 41 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Partly cloudy, with a low around 30. Southeast wind 3 to 5 mph.

    Low: 30 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 52. South wind 5 to 7 mph.

    High: 52 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 38. Light southeast wind.

    Low: 38 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of rain after 2pm. Partly sunny, with a high near 59. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 20%.

    High: 59 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Friday Night

    Friday Night: Rain likely, mainly after 2am. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.

    Low: 48 °F

    Rain Likely

  • Saturday

    Saturday: Rain likely before 8am. Mostly sunny, with a high near 66. Chance of precipitation is 60%.

    High: 66 °F

    Rain Likely
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 48.

    Low: 48 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain after 2pm. Partly sunny, with a high near 70. Chance of precipitation is 30%.

    High: 70 °F

    Partly Sunny
    then Chance
    Rain

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 41. Calm wind becoming south around 6 mph in the afternoon.
Tonight
Partly cloudy, with a low around 30. Southeast wind 3 to 5 mph.
Thursday
Mostly sunny, with a high near 52. South wind 5 to 7 mph.
Thursday Night
Mostly cloudy, with a low around 38. Light southeast wind.
Friday
A slight chance of rain after 2pm. Partly sunny, with a high near 59. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 20%.
Friday Night
Rain likely, mainly after 2am. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Saturday
Rain likely before 8am. Mostly sunny, with a high near 66. Chance of precipitation is 60%.
Saturday Night
Mostly cloudy, with a low around 48.
Sunday
A chance of rain after 2pm. Partly sunny, with a high near 70. Chance of precipitation is 30%.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 44. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 55.
Monday Night
Partly cloudy, with a low around 30.
Tuesday
Partly sunny, with a high near 48.
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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 18, 2026
Forecast Valid:
7am EDT Mar 18, 2026-6pm EDT Mar 24, 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