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Heavy Rainfall and Severe Thunderstorms in the Midwest and Southwest; Heat Continues in the Southern U.S.

Heavy to excessive rainfall could bring flooding today through Thursday across parts of the central Plains into the Midwest and southern Arizona and New Mexico. Scattered strong to severe thunderstorms may impact parts of eastern Nebraska into western Iowa later today into early evening. Heat Advisories remain in place across much of east Texas into the mid-Mississippi Valley today and Tuesday. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

76°F

24°C

Humidity 42%
Wind Speed W 12 G 16 mph
Barometer 30.16 in (1022.4 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 14 Sep 3:56 pm EDT
Extended Forecast for

2 Miles NNW Potomac MD

  • Tonight

    Tonight: Mostly clear, with a low around 53. North wind 5 to 9 mph becoming light northeast in the evening.

    Low: 53 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78. Light and variable wind becoming southeast around 5 mph in the afternoon.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 57. Southeast wind around 5 mph becoming calm in the evening.

    Low: 57 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 84. Calm wind becoming south around 5 mph in the afternoon.

    High: 84 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 62. South wind 3 to 5 mph.

    Low: 62 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Friday

    Friday: A chance of showers after 2pm. Mostly sunny, with a high near 87. Chance of precipitation is 30%.

    High: 87 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers, mainly before 8pm. Partly cloudy, with a low around 66. Chance of precipitation is 30%.

    Low: 66 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 53. North wind 5 to 9 mph becoming light northeast in the evening.
Tuesday
Sunny, with a high near 78. Light and variable wind becoming southeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 57. Southeast wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 84. Calm wind becoming south around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 62. South wind 3 to 5 mph.
Thursday
Sunny, with a high near 86.
Thursday Night
Mostly clear, with a low around 68.
Friday
A chance of showers after 2pm. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
Friday Night
A chance of showers, mainly before 8pm. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
Saturday
A slight chance of showers after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 20%.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 68. Chance of precipitation is 20%.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.
Monday
A chance of showers. Partly sunny, with a high near 81. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Potomac MD
 39.04°N 77.2°W (Elev. 397 ft)
Last Update:
2:23 pm EDT Sep 14, 2026
Forecast Valid:
4pm EDT Sep 14, 2026-6pm EDT Sep 21, 2026
 
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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