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

74°F

23°C

Humidity 76%
Wind Speed N 6 mph
Barometer 30.03 in (1016.1 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 28 Aug 5:53 am CDT
Extended Forecast for

3 Miles SE Prosper TX

  • Today

    Today: Sunny and hot, with a high near 100. Light east wind becoming east northeast 5 to 10 mph in the afternoon.

    High: 100 °F

    Hot

  • Tonight

    Tonight: Clear, with a low around 76. East wind 5 to 10 mph.

    Low: 76 °F

    Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 100. East southeast wind around 5 mph.

    High: 100 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 77. Southeast wind around 10 mph.

    Low: 77 °F

    Mostly Clear

  • Sunday

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

    High: 100 °F

    Hot

  • Sunday Night

    Sunday Night: Clear, with a low around 78. South southeast wind around 10 mph.

    Low: 78 °F

    Clear

  • Monday

    Monday: Sunny and hot, with a high near 99. South wind around 10 mph.

    High: 99 °F

    Hot

  • Monday Night

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

    Low: 78 °F

    Mostly Clear

  • Tuesday

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

    High: 97 °F

    Sunny

Detailed Forecast

Today
Sunny and hot, with a high near 100. Light east wind becoming east northeast 5 to 10 mph in the afternoon.
Tonight
Clear, with a low around 76. East wind 5 to 10 mph.
Saturday
Sunny and hot, with a high near 100. East southeast wind around 5 mph.
Saturday Night
Mostly clear, with a low around 77. Southeast wind around 10 mph.
Sunday
Sunny and hot, with a high near 100. South wind 5 to 10 mph.
Sunday Night
Clear, with a low around 78. South southeast wind around 10 mph.
Monday
Sunny and hot, with a high near 99. South wind around 10 mph.
Monday Night
Mostly clear, with a low around 78. South southeast wind around 10 mph.
Tuesday
Sunny, with a high near 97. South wind around 10 mph.
Tuesday Night
Mostly clear, with a low around 78.
Wednesday
Sunny, with a high near 98.
Wednesday Night
Mostly clear, with a low around 79.
Thursday
Sunny and hot, with a high near 99.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Prosper TX
 33.21°N 96.73°W (Elev. 699 ft)
Last Update:
6:06 am CDT Aug 28, 2026
Forecast Valid:
6am CDT Aug 28, 2026-6pm CDT Sep 3, 2026
 
Forecast Discussion
 
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Additional Resources

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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