Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Mostly Cloudy

66°F

19°C

Humidity NA
Wind Speed Calm
Barometer 29.85 in (1012.0 mb)
Dewpoint N/A
Visibility 10.00 mi
Last update 23 Aug 2:56 am EDT
Extended Forecast for

Clarksburg MD

  • Overnight

    Overnight: A slight chance of showers and thunderstorms.  Mostly cloudy, with a low around 65. Calm wind.  Chance of precipitation is 20%.

    Low: 65 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: Partly sunny through mid morning, then becoming sunny, with a high near 80. West wind 6 to 11 mph, with gusts as high as 21 mph.

    High: 80 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 59. West wind around 5 mph becoming calm  in the evening.

    Low: 59 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 78. Light west wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 18 mph.

    High: 78 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 57. Northwest wind around 6 mph becoming calm  in the evening.

    Low: 57 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms after 2am.  Partly cloudy, with a low around 67. Chance of precipitation is 30%.

    Low: 67 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Calm wind. Chance of precipitation is 20%.
Sunday
Partly sunny through mid morning, then becoming sunny, with a high near 80. West wind 6 to 11 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 59. West wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 78. Light west wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Monday Night
Clear, with a low around 57. Northwest wind around 6 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 81.
Tuesday Night
Mostly clear, with a low around 60.
Wednesday
Mostly sunny, with a high near 84.
Wednesday Night
A chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 60%.
Thursday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 84. Chance of precipitation is 20%.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 66. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
Clarksburg MD
 39.22°N 77.25°W (Elev. 505 ft)
2:23 am EDT Aug 23, 2026
3am EDT Aug 23, 2026-6pm EDT Aug 29, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database