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

Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Great Lakes

Thunderstorms with strong wind gusts and hail will be possible today from Michigan into the Lower Great Lakes region. A significant and dangerous heat wave will expand from the Central U.S. into the Eastern U.S this weekend through much of next week. Numerous daily record highs and warm lows are likely. Read More >

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Mostly Cloudy

90°F

32°C

Humidity 55%
Wind Speed S 18 mph
Barometer 30.01 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 21 Jun 1:50 pm CDT
Extended Forecast for

Gainesville TX

  • This Afternoon

    This Afternoon: Sunny, with a high near 92. Heat index values as high as 100. South wind around 15 mph, with gusts as high as 25 mph.

    High: 92 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 73. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 73 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 92. Heat index values as high as 98. South wind around 10 mph, with gusts as high as 20 mph.

    High: 92 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 74. South southeast wind 5 to 10 mph.

    Low: 74 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 92. South wind 5 to 10 mph.

    High: 92 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 73. Southeast wind around 5 mph.

    Low: 73 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93. South wind around 5 mph.

    High: 93 °F

    Sunny

  • Tuesday Night

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

    Low: 74 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 93. South wind around 5 mph.

    High: 93 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 92. Heat index values as high as 100. South wind around 15 mph, with gusts as high as 25 mph.
Tonight
Clear, with a low around 73. South wind around 10 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 92. Heat index values as high as 98. South wind around 10 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 74. South southeast wind 5 to 10 mph.
Monday
Sunny, with a high near 92. South wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 73. Southeast wind around 5 mph.
Tuesday
Sunny, with a high near 93. South wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 74. South southeast wind around 5 mph.
Wednesday
Sunny, with a high near 93. South wind around 5 mph.
Wednesday Night
Mostly clear, with a low around 72.
Thursday
Mostly sunny, with a high near 93.
Thursday Night
Mostly clear, with a low around 73.
Friday
Sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Gainesville TX
 33.63°N 97.14°W (Elev. 764 ft)
Last Update:
12:47 pm CDT Jun 21, 2025
Forecast Valid:
2pm CDT Jun 21, 2025-6pm CDT Jun 27, 2025
 
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Additional Resources

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