National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Thunderstorms and Widespread Rainfall Across the Southern Plains

Isolated severe thunderstorms and widespread showers may produce flash flooding across the Southern Plains through Thursday. Numerous instances of flash flooding are expected in south-central Texas, including portions of the Hill Country; and an additional area across eastern Oklahoma into the Ozarks on Thursday. Heavy rainfall and mountain snow will return to southern California on Thursday. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Overcast

40°F

4°C

Humidity 100%
Wind Speed Calm
Barometer 30.26 in (1026.6 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 19 Nov 10:56 pm EST
Extended Forecast for

Green Valley MD

  • Tonight

    Tonight: Mostly cloudy, with a low around 35. Light northeast wind.

    Low: 35 °F

    Mostly Cloudy

  • Thursday

    Thursday: Cloudy, with a high near 47. Calm wind.

    High: 47 °F

    Cloudy

  • Thursday Night

    Thursday Night: Cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Cloudy

  • Friday

    Friday: A chance of rain, mainly after 1pm. Cloudy, with a high near 54. Light south wind. Chance of precipitation is 40%.

    High: 54 °F

    Chance Rain

  • Friday Night

    Friday Night: Rain. Low around 46. Calm wind becoming north around 6 mph after midnight. Chance of precipitation is 80%.

    Low: 46 °F

    Rain

  • Saturday

    Saturday: A chance of rain before 1pm. Partly sunny, with a high near 53. Chance of precipitation is 30%.

    High: 53 °F

    Chance Rain

  • Saturday Night

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

    Low: 31 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 35. Light northeast wind.
Thursday
Cloudy, with a high near 47. Calm wind.
Thursday Night
Cloudy, with a low around 40. Calm wind.
Friday
A chance of rain, mainly after 1pm. Cloudy, with a high near 54. Light south wind. Chance of precipitation is 40%.
Friday Night
Rain. Low around 46. Calm wind becoming north around 6 mph after midnight. Chance of precipitation is 80%.
Saturday
A chance of rain before 1pm. Partly sunny, with a high near 53. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 31.
Sunday
Sunny, with a high near 51.
Sunday Night
Partly cloudy, with a low around 36.
Monday
Mostly sunny, with a high near 55.
Monday Night
Mostly cloudy, with a low around 40.
Tuesday
A chance of rain. Mostly cloudy, with a high near 54. Chance of precipitation is 40%.
Tuesday Night
Rain likely. Mostly cloudy, with a low around 47. Chance of precipitation is 60%.
Wednesday
Partly sunny, with a high near 62.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Green Valley MD
 39.33°N 77.24°W (Elev. 607 ft)
Last Update:
10:51 pm EST Nov 19, 2025
Forecast Valid:
11pm EST Nov 19, 2025-6pm EST Nov 26, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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