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.

Fair

82°F

28°C

Humidity 69%
Wind Speed SE 14 mph
Barometer 30.00 in
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 21 Jun 11:55 pm CDT
Extended Forecast for

2 Miles WSW Callisburg TX

  • Overnight

    Overnight: Mostly clear, with a low around 73. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 73 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 91. Heat index values as high as 98. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 91 °F

    Sunny

  • Sunday Night

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

    Low: 74 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 92. Heat index values as high as 99. South wind 5 to 10 mph.

    High: 92 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 73. South southeast wind 5 to 10 mph.

    Low: 73 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 92. South wind around 5 mph.

    High: 92 °F

    Sunny

  • Tuesday Night

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

    Low: 73 °F

    Mostly Clear

  • Wednesday

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

    High: 92 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 72. South southeast wind 5 to 10 mph.

    Low: 72 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 73. South wind around 10 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 91. Heat index values as high as 98. South wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 74. South southeast wind around 10 mph.
Monday
Sunny, with a high near 92. Heat index values as high as 99. South wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 73. South southeast wind 5 to 10 mph.
Tuesday
Sunny, with a high near 92. South wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 73. Southeast wind around 5 mph.
Wednesday
Sunny, with a high near 92. South wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 72. South southeast wind 5 to 10 mph.
Thursday
Mostly sunny, with a high near 92.
Thursday Night
Partly cloudy, with a low around 74.
Friday
Mostly sunny, with a high near 93.
Friday Night
Partly cloudy, with a low around 74.
Saturday
Mostly sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Callisburg TX
 33.68°N 97.06°W (Elev. 883 ft)
Last Update:
11:43 pm CDT Jun 21, 2025
Forecast Valid:
12am CDT Jun 22, 2025-6pm CDT Jun 28, 2025
 
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Additional Resources

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