Heat Persists in the Southwest; Elevated to Critical Fire Weather in the Great Basin; Poor Air Quality in the West

Dangerous heat will persist across the Southwest U.S. through this week, easing by next week. The heat will focus further east in the Great Plains and Mississippi Valley beginning next week. Elevated to locally critical fire weather conditions will persist for the Great Basin today. Poor air quality lingers for the Northwest, Great Basin, Central Rockies into the Plains. Read More >

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Fair

99°F

37°C

Humidity 31%
Wind Speed S 16 mph
Barometer 29.95 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index101°F (38°C)
Last update 4 Aug 2:50 pm CDT
Extended Forecast for

2 Miles E Knollwood TX

  • This Afternoon

    This Afternoon: Mostly sunny and hot, with a high near 99. South southeast wind around 5 mph.

    High: 99 °F

    Hot

  • Tonight

    Tonight: Clear, with a low around 79. South southeast wind 5 to 10 mph.

    Low: 79 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 100. Heat index values as high as 104. Southwest wind 5 to 10 mph.

    High: 100 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 79. South wind 5 to 10 mph.

    Low: 79 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 100. South southwest wind 5 to 10 mph.

    High: 100 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 78. South southeast wind 5 to 10 mph.

    Low: 78 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 98. South wind 5 to 10 mph.

    High: 98 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 77. South southeast wind 5 to 10 mph.

    Low: 77 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 98. South southwest wind around 5 mph.

    High: 98 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny and hot, with a high near 99. South southeast wind around 5 mph.
Tonight
Clear, with a low around 79. South southeast wind 5 to 10 mph.
Wednesday
Sunny and hot, with a high near 100. Heat index values as high as 104. Southwest wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 79. South wind 5 to 10 mph.
Thursday
Sunny and hot, with a high near 100. South southwest wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 78. South southeast wind 5 to 10 mph.
Friday
Sunny, with a high near 98. South wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 77. South southeast wind 5 to 10 mph.
Saturday
Sunny, with a high near 98. South southwest wind around 5 mph.
Saturday Night
Mostly clear, with a low around 78.
Sunday
Sunny, with a high near 98.
Sunday Night
Clear, with a low around 78.
Monday
Sunny, with a high near 98.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E Knollwood TX
 33.69°N 96.57°W (Elev. 755 ft)
1:26 pm CDT Aug 4, 2026
3pm CDT Aug 4, 2026-6pm CDT Aug 10, 2026
 
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Additional Resources

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Hourly Weather Forecast

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