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

Widespread Rain from Texas to the Central Appalachians; Heavy to Excessive Rainfall in Southern California and the Southwest

Scattered thunderstorms and widespread showers are expected from the Texas coast to the central Appalachians today. Heavy to excessive rainfall will continue in southern California into the Desert Southwest through Saturday. Heavy rain will pose a risk of flash flooding, especially across burn scar and urbanized regions. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

A Few Clouds

36°F

2°C

Humidity NA
Wind Speed E 3 mph
Barometer 30.04 in (1019.1 mb)
Dewpoint N/A
Visibility 9.00 mi
Last update 23 Nov 12:56 am EST
Extended Forecast for

Potomac MD

  • Overnight

    Overnight: Partly cloudy, with a low around 36. Calm wind.

    Low: 36 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 58. Light and variable wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 29 mph.

    High: 58 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 36. Northwest wind 6 to 8 mph.

    Low: 36 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 55. Northwest wind around 6 mph becoming calm in the afternoon.

    High: 55 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 38. Calm wind becoming south around 5 mph after midnight.

    Low: 38 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of rain, mainly after 1pm. Cloudy, with a high near 55. Chance of precipitation is 50%.

    High: 55 °F

    Slight Chance
    Rain then
    Chance Rain

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before 1am. Mostly cloudy, with a low around 50. Chance of precipitation is 60%.

    Low: 50 °F

    Rain Likely

  • Wednesday

    Wednesday: A chance of rain before 1pm. Partly sunny, with a high near 66. Chance of precipitation is 30%.

    High: 66 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 36. Calm wind.
Sunday
Mostly sunny, with a high near 58. Light and variable wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 29 mph.
Sunday Night
Mostly clear, with a low around 36. Northwest wind 6 to 8 mph.
Monday
Sunny, with a high near 55. Northwest wind around 6 mph becoming calm in the afternoon.
Monday Night
Mostly cloudy, with a low around 38. Calm wind becoming south around 5 mph after midnight.
Tuesday
A chance of rain, mainly after 1pm. Cloudy, with a high near 55. Chance of precipitation is 50%.
Tuesday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 50. Chance of precipitation is 60%.
Wednesday
A chance of rain before 1pm. Partly sunny, with a high near 66. Chance of precipitation is 30%.
Wednesday Night
Partly cloudy, with a low around 37.
Thanksgiving Day
Mostly sunny, with a high near 46.
Thursday Night
Mostly clear, with a low around 29.
Friday
Sunny, with a high near 42.
Friday Night
Mostly clear, with a low around 27.
Saturday
Sunny, with a high near 43.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Potomac MD
 39.04°N 77.2°W (Elev. 397 ft)
Last Update:
12:52 am EST Nov 23, 2025
Forecast Valid:
1am EST Nov 23, 2025-6pm EST Nov 29, 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