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

Heavy to Excessive Rainfall for the Southwest U.S.; Watching for Possible East Coast Storm

Thunderstorms and a chance for some isolated flash flooding will continue today in the Southwest U.S. before an influx of tropical moisture from Priscilla brings widespread heavy rainfall and a flash flooding threat late this week into this weekend. A coastal storm may develop off the southeast U.S. coast Friday night and drift north just off the Mid-Atlantic coast through the weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Mostly Cloudy

67°F

19°C

Humidity 61%
Wind Speed Vrbl 7 mph
Barometer 30.13 in (1021.4 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 8 Oct 2:56 pm EDT
Extended Forecast for

2 Miles ESE Potomac MD

  • Tonight

    Tonight: Clear, with a low around 47. North wind 7 to 11 mph, with gusts as high as 22 mph.

    Low: 47 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 63. North wind 8 to 10 mph.

    High: 63 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 40. Northeast wind around 5 mph becoming calm in the evening.

    Low: 40 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 65. Light and variable wind becoming southeast 5 to 7 mph in the morning.

    High: 65 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 50. Light southeast wind.

    Low: 50 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of showers after 2pm. Mostly cloudy, with a high near 69. Chance of precipitation is 20%.

    High: 69 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers after 2am. Mostly cloudy, with a low around 55. Chance of precipitation is 40%.

    Low: 55 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A chance of showers. Partly sunny, with a high near 63. Chance of precipitation is 50%.

    High: 63 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers. Mostly cloudy, with a low around 51. Chance of precipitation is 40%.

    Low: 51 °F

    Chance
    Showers

Detailed Forecast

Tonight
Clear, with a low around 47. North wind 7 to 11 mph, with gusts as high as 22 mph.
Thursday
Sunny, with a high near 63. North wind 8 to 10 mph.
Thursday Night
Clear, with a low around 40. Northeast wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 65. Light and variable wind becoming southeast 5 to 7 mph in the morning.
Friday Night
Partly cloudy, with a low around 50. Light southeast wind.
Saturday
A slight chance of showers after 2pm. Mostly cloudy, with a high near 69. Chance of precipitation is 20%.
Saturday Night
A chance of showers after 2am. Mostly cloudy, with a low around 55. Chance of precipitation is 40%.
Sunday
A chance of showers. Partly sunny, with a high near 63. Chance of precipitation is 50%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 51. Chance of precipitation is 40%.
Columbus Day
A chance of showers. Partly sunny, with a high near 62. Chance of precipitation is 40%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 68.
Tuesday Night
Partly cloudy, with a low around 53.
Wednesday
Mostly sunny, with a high near 70.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Potomac MD
 39.01°N 77.15°W (Elev. 269 ft)
Last Update:
1:29 pm EDT Oct 8, 2025
Forecast Valid:
3pm EDT Oct 8, 2025-6pm EDT Oct 15, 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