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

Heavy Rainfall on the Western Gulf Coast; Severe Thunderstorms in the Southern Plains Friday

A multi-day heavy rainfall event will continue over the western Gulf Coast through Monday. Slight Risks of excessive rainfall have been issued, and Flood Watches remain in effect through Monday evening. Scattered severe storms capable of producing large hail and damaging winds are possible across western portions of Texas and Oklahoma on Friday. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Light Rain

55°F

13°C

Humidity NA
Wind Speed Calm
Barometer 30.26 in (1026.1 mb)
Dewpoint N/A
Visibility 4.00 mi
Last update 22 May 1:56 am EDT
Extended Forecast for

North Potomac MD

  • Overnight

    Overnight: Showers likely, mainly before 5am. Cloudy, with a low around 53. Northeast wind around 6 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 53 °F

    Showers
    Likely

  • Friday

    Friday: Showers, mainly after 10am. High near 59. East wind 8 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 59 °F

    Showers
    Likely then
    Showers

  • Friday Night

    Friday Night: Showers. Low around 50. East wind 7 to 9 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 50 °F

    Showers

  • Saturday

    Saturday: Showers, with thunderstorms also possible after 5pm. High near 59. East wind around 10 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 59 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 53. East wind 5 to 10 mph becoming light northeast after midnight. Chance of precipitation is 90%.

    Low: 53 °F

    Showers

  • Sunday

    Sunday: Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 73. Chance of precipitation is 60%.

    High: 73 °F

    Showers
    Likely then
    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers after 8pm. Mostly cloudy, with a low around 59. Chance of precipitation is 50%.

    Low: 59 °F

    Chance
    Showers

  • Memorial Day

    Memorial Day: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 71. Chance of precipitation is 60%.

    High: 71 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.

    Low: 61 °F

    Showers
    Likely

Detailed Forecast

Overnight
Showers likely, mainly before 5am. Cloudy, with a low around 53. Northeast wind around 6 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers, mainly after 10am. High near 59. East wind 8 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Showers. Low around 50. East wind 7 to 9 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Showers, with thunderstorms also possible after 5pm. High near 59. East wind around 10 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers and possibly a thunderstorm. Low around 53. East wind 5 to 10 mph becoming light northeast after midnight. Chance of precipitation is 90%.
Sunday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 73. Chance of precipitation is 60%.
Sunday Night
A chance of showers after 8pm. Mostly cloudy, with a low around 59. Chance of precipitation is 50%.
Memorial Day
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 71. Chance of precipitation is 60%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 74. Chance of precipitation is 50%.
Tuesday Night
Mostly cloudy, with a low around 61.
Wednesday
A chance of showers. Partly sunny, with a high near 80. Chance of precipitation is 30%.
Wednesday Night
Mostly cloudy, with a low around 61.
Thursday
Mostly sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
North Potomac MD
 39.09°N 77.25°W (Elev. 348 ft)
Last Update:
10:53 pm EDT May 21, 2026
Forecast Valid:
2am EDT May 22, 2026-6pm EDT May 28, 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