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 >

Hazardous Weather Conditions

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Fair

98°F

37°C

Humidity 34%
Wind Speed N 6 mph
Barometer 30.04 in (1016.4 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index101°F (38°C)
Last update 28 Aug 1:53 pm CDT
Extended Forecast for

3 Miles NE Wylie TX

  • This Afternoon

    This Afternoon: Sunny, with a high near 97. Heat index values as high as 100. East northeast wind around 5 mph.

    High: 97 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 77. East wind around 5 mph.

    Low: 77 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 98. Heat index values as high as 102. Southeast wind around 5 mph.

    High: 98 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 78. Southeast wind 5 to 10 mph.

    Low: 78 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 98. South wind around 10 mph.

    High: 98 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 79. South southeast wind around 10 mph.

    Low: 79 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 97. South wind around 10 mph.

    High: 97 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 79. Southeast wind around 10 mph.

    Low: 79 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 96. South wind 5 to 10 mph.

    High: 96 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 97. Heat index values as high as 100. East northeast wind around 5 mph.
Tonight
Clear, with a low around 77. East wind around 5 mph.
Saturday
Sunny, with a high near 98. Heat index values as high as 102. Southeast wind around 5 mph.
Saturday Night
Mostly clear, with a low around 78. Southeast wind 5 to 10 mph.
Sunday
Sunny, with a high near 98. South wind around 10 mph.
Sunday Night
Mostly clear, with a low around 79. South southeast wind around 10 mph.
Monday
Sunny, with a high near 97. South wind around 10 mph.
Monday Night
Mostly clear, with a low around 79. Southeast wind around 10 mph.
Tuesday
Sunny, with a high near 96. South wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 78.
Wednesday
Sunny, with a high near 97.
Wednesday Night
Mostly clear, with a low around 78.
Thursday
Sunny, with a high near 97.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Wylie TX
 33.08°N 96.48°W (Elev. 499 ft)
Last Update:
1:26 pm CDT Aug 28, 2026
Forecast Valid:
2pm CDT Aug 28, 2026-6pm CDT Sep 3, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation