Heavy Rainfall and Severe Thunderstorm Threats for the Plains and Southeast

A frontal boundary extending from the western High Plains to the Southeast will focus additional showers and thunderstorms this weekend. Some of these storms may become severe, alongside frequent lightning, and isolated instances of flash flooding. Meanwhile dry conditions will continue for the Great Basin where fire weather concerns linger. For the mid-Atlantic and Northeast, seasonable weather. Read More >

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Fair

84°F

29°C

Humidity 66%
Wind Speed NE 9 mph
Barometer 30.10 in
Dewpoint 71°F (22°C)
Visibility 9.00 mi
Heat Index89°F (32°C)
Last update 2 Aug 7:55 pm CDT
Extended Forecast for

Southmayd TX

  • Tonight

    Tonight: Mostly clear, with a low around 69. East northeast wind around 5 mph becoming calm  in the evening.

    Low: 69 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 88. East southeast wind around 5 mph.

    High: 88 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am.  Partly cloudy, with a low around 69. East wind around 5 mph.

    Low: 69 °F

    Chance
    T-storms

  • Monday

    Monday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm.  Mostly cloudy, then gradually becoming sunny, with a high near 86. East southeast wind around 5 mph.  Chance of precipitation is 30%.

    High: 86 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 68. East wind around 5 mph becoming calm  in the evening.

    Low: 68 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 91. East southeast wind around 5 mph.

    High: 91 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 71. Southeast wind around 5 mph.

    Low: 71 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 95. South wind around 5 mph.

    High: 95 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 74. South southeast wind around 5 mph.

    Low: 74 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 69. East northeast wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 88. East southeast wind around 5 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 69. East wind around 5 mph.
Monday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 86. East southeast wind around 5 mph. Chance of precipitation is 30%.
Monday Night
Mostly clear, with a low around 68. East wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 91. East southeast wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 71. Southeast wind around 5 mph.
Wednesday
Sunny, with a high near 95. South wind around 5 mph.
Wednesday Night
Mostly clear, with a low around 74. South southeast wind around 5 mph.
Thursday
Sunny, with a high near 96.
Thursday Night
Mostly clear, with a low around 75.
Friday
Sunny, with a high near 96.
Friday Night
Mostly clear, with a low around 76.
Saturday
Sunny, with a high near 96.
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ABOUT THIS FORECAST

 
Point Forecast:
Southmayd TX
 33.62°N 96.71°W (Elev. 820 ft)
5:24 pm CDT Aug 2, 2025
8pm CDT Aug 2, 2025-6pm CDT Aug 9, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database