Heavy Rainfall and Severe Thunderstorms in the Midwest and Ohio Valley Tuesday

Multiple rounds of severe thunderstorms appear likely Tuesday across the Midwest and Ohio Valley, with severe wind gusts in excess of 75 mph as the primary threat. Heavy to excessive rainfall may lead to considerable flash and urban flooding impacts Tuesday across portions of the Ohio Valley. A Moderate Risk (level 3 of 4) of excessive rainfall has been issued. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Mostly Cloudy

70°F

21°C

Humidity NA
Wind Speed Calm
Barometer 29.97 in (1015.5 mb)
Dewpoint N/A
Visibility 10.00 mi
Last update 11 Aug 3:56 am EDT
Extended Forecast for

Glenwood MD

  • Today

    Today: A chance of showers and thunderstorms after 2pm.  Partly sunny, with a high near 87. West wind 3 to 8 mph.  Chance of precipitation is 30%.

    High: 87 °F

    Partly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 67. West wind around 5 mph becoming calm  after midnight.  Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers, with thunderstorms also possible after 5pm.  Partly sunny, with a high near 84. Northwest wind around 6 mph.  Chance of precipitation is 20%.

    High: 84 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 68. Light and variable wind.  Chance of precipitation is 30%.

    Low: 68 °F

    Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers, with thunderstorms also possible after 5pm.  Mostly sunny, with a high near 86. Calm wind becoming west around 6 mph in the afternoon.  Chance of precipitation is 20%.

    High: 86 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am, then a chance of showers and thunderstorms after 2am.  Mostly cloudy, with a low around 69. Chance of precipitation is 30%.

    Low: 69 °F

    Chance
    Showers

  • Friday

    Friday: A slight chance of showers and thunderstorms before 2pm.  Mostly sunny, with a high near 83. Chance of precipitation is 20%.

    High: 83 °F

    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. West wind 3 to 8 mph. Chance of precipitation is 30%.
Tonight
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. West wind around 5 mph becoming calm after midnight. Chance of precipitation is 30%.
Wednesday
A slight chance of showers, with thunderstorms also possible after 5pm. Partly sunny, with a high near 84. Northwest wind around 6 mph. Chance of precipitation is 20%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Light and variable wind. Chance of precipitation is 30%.
Thursday
A slight chance of showers, with thunderstorms also possible after 5pm. Mostly sunny, with a high near 86. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 20%.
Thursday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 30%.
Friday
A slight chance of showers and thunderstorms before 2pm. Mostly sunny, with a high near 83. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 61.
Saturday
Sunny, with a high near 79.
Saturday Night
Partly cloudy, with a low around 62.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
Sunday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 84. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Glenwood MD
 39.31°N 77.04°W (Elev. 541 ft)
2:23 am EDT Aug 11, 2026
4am EDT Aug 11, 2026-6pm EDT Aug 17, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database