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

2 Miles SW Potomac MD

  • Tonight

    Tonight: Mostly cloudy, with a low around 38. Light north wind.

    Low: 38 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 49. Calm wind.

    High: 49 °F

    Mostly 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 55. Calm wind becoming south around 5 mph. Chance of precipitation is 40%.

    High: 55 °F

    Chance Rain

  • Friday Night

    Friday Night: Rain. Low around 48. Calm wind becoming northwest around 5 mph after midnight. Chance of precipitation is 80%.

    Low: 48 °F

    Rain

  • Saturday

    Saturday: A chance of rain before 1pm. Partly sunny, with a high near 56. Chance of precipitation is 30%.

    High: 56 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 38. Light north wind.
Thursday
Mostly cloudy, with a high near 49. 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 55. Calm wind becoming south around 5 mph. Chance of precipitation is 40%.
Friday Night
Rain. Low around 48. Calm wind becoming northwest around 5 mph after midnight. Chance of precipitation is 80%.
Saturday
A chance of rain before 1pm. Partly sunny, with a high near 56. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
Sunny, with a high near 52.
Sunday Night
Mostly clear, with a low around 37.
Monday
Mostly sunny, with a high near 57.
Monday Night
Mostly cloudy, with a low around 40.
Tuesday
A chance of rain. Mostly cloudy, with a high near 55. Chance of precipitation is 30%.
Tuesday Night
Rain likely. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Wednesday
Mostly sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Potomac MD
 39°N 77.24°W (Elev. 318 ft)
Last Update:
10:51 pm EST Nov 19, 2025
Forecast Valid:
10pm EST Nov 19, 2025-6pm EST Nov 26, 2025
 
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