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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Carroll County Regional Jack B Poage Field (KDMW)

Lat: 39.61°NLon: 77.01°WElev: 789ft.

Fair

79°F

26°C

Humidity 61%
Wind Speed NE 2 mph
Barometer 30.07 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 28 Aug 7:15 pm EDT
Extended Forecast for

Glyndon MD

  • Tonight

    Tonight: Mostly clear, with a low around 60. North wind around 5 mph becoming calm.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 82. Northeast wind around 5 mph becoming calm in the morning.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 65. Light east wind.

    Low: 65 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 86. Southwest wind 3 to 7 mph.

    High: 86 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 70. Light and variable wind.

    Low: 70 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 71.

    Low: 71 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers before 2am. Partly cloudy, with a low around 73. Chance of precipitation is 20%.

    Low: 73 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 60. North wind around 5 mph becoming calm.
Saturday
Sunny, with a high near 82. Northeast wind around 5 mph becoming calm in the morning.
Saturday Night
Partly cloudy, with a low around 65. Light east wind.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 86. Southwest wind 3 to 7 mph.
Sunday Night
Partly cloudy, with a low around 70. Light and variable wind.
Monday
Mostly sunny, with a high near 89.
Monday Night
Mostly cloudy, with a low around 71.
Tuesday
Mostly sunny, with a high near 91.
Tuesday Night
A slight chance of showers before 2am. Partly cloudy, with a low around 73. Chance of precipitation is 20%.
Wednesday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Chance of precipitation is 20%.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 20%.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Chance of precipitation is 30%.
Friday
A slight chance of showers. Mostly sunny, with a high near 85. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Glyndon MD
 39.47°N 76.81°W (Elev. 650 ft)
Last Update:
4:53 pm EDT Aug 28, 2026
Forecast Valid:
7pm EDT Aug 28, 2026-6pm EDT Sep 4, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation