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Tropical Storm Edouard Along the Gulf Coast; Heat Expands Eastward

Tropical Storm Edouard off the central Gulf Coast will bring tropical storm conditions and heavy rainfall to portions of Upper Texas and southwestern Louisiana coasts Tuesday into Wednesday. Storm Surge Watches and Tropical Storm Warnings are in effect. Hot and humid conditions will continue to expand from the Central Plains into the Ohio Valley and Mid-Atlantic this week. Read More >

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair with Haze

73°F

23°C

Humidity NA
Wind Speed Calm
Barometer 30.05 in (1018.5 mb)
Dewpoint N/A
Visibility 6.00 mi
Last update 1 Sep 5:56 am EDT
Extended Forecast for

Rockville MD

  • Today

    Today: A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Heat index values as high as 100. Light west wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 20%.

    High: 92 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: Isolated showers and thunderstorms. Mostly cloudy, with a low around 74. Northwest wind around 6 mph. Chance of precipitation is 20%.

    Low: 74 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, mainly after 5pm. Mostly cloudy, then gradually becoming sunny, with a high near 87. Northwest wind 3 to 6 mph. Chance of precipitation is 40%.

    High: 87 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 72. Southeast wind around 6 mph. Chance of precipitation is 40%.

    Low: 72 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers between 8am and 2pm, then scattered showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Light southwest wind becoming west 5 to 9 mph in the morning. Chance of precipitation is 50%.

    High: 91 °F

    Slight Chance
    Showers then
    Scattered
    T-storms

  • Thursday Night

    Thursday Night: Scattered showers and thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    T-storms

  • Friday

    Friday: A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 20%.

    High: 90 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 20%.

    Low: 68 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

Today
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Heat index values as high as 100. Light west wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 20%.
Tonight
Isolated showers and thunderstorms. Mostly cloudy, with a low around 74. Northwest wind around 6 mph. Chance of precipitation is 20%.
Wednesday
A chance of showers and thunderstorms, mainly after 5pm. Mostly cloudy, then gradually becoming sunny, with a high near 87. Northwest wind 3 to 6 mph. Chance of precipitation is 40%.
Wednesday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 72. Southeast wind around 6 mph. Chance of precipitation is 40%.
Thursday
A slight chance of showers between 8am and 2pm, then scattered showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Light southwest wind becoming west 5 to 9 mph in the morning. Chance of precipitation is 50%.
Thursday Night
Scattered showers and thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 30%.
Friday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 20%.
Friday Night
A slight chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 84.
Saturday Night
Partly cloudy, with a low around 65.
Sunday
Mostly sunny, with a high near 81.
Sunday Night
Partly cloudy, with a low around 63.
Labor Day
A chance of showers. Mostly sunny, with a high near 81. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Rockville MD
 39.08°N 77.16°W (Elev. 430 ft)
Last Update:
4:52 am EDT Sep 1, 2026
Forecast Valid:
6am EDT Sep 1, 2026-6pm EDT Sep 7, 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