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

75°F

24°C

Humidity 74%
Wind Speed N 3 mph
Barometer 30.02 in (1015.8 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 28 Aug 4:53 am CDT
Extended Forecast for

5 Miles W Prosper TX

  • Today

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

    High: 100 °F

    Hot

  • Tonight

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

    Low: 76 °F

    Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 100. East southeast wind around 5 mph becoming south in the afternoon.

    High: 100 °F

    Hot

  • 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 and hot, with a high near 101. South wind 5 to 10 mph.

    High: 101 °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 100. South wind around 10 mph.

    High: 100 °F

    Hot

  • Monday Night

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

    Low: 79 °F

    Mostly Clear

  • Tuesday

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

    High: 98 °F

    Sunny

Detailed Forecast

Today
Sunny and hot, with a high near 100. Calm wind becoming east northeast around 5 mph in the afternoon.
Tonight
Clear, with a low around 76. East wind around 5 mph.
Saturday
Sunny and hot, with a high near 100. East southeast wind around 5 mph becoming south in the afternoon.
Saturday Night
Mostly clear, with a low around 78. Southeast wind 5 to 10 mph.
Sunday
Sunny and hot, with a high near 101. 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 100. South wind around 10 mph.
Monday Night
Mostly clear, with a low around 79. South southeast wind around 10 mph.
Tuesday
Sunny, with a high near 98. South wind around 10 mph.
Tuesday Night
Mostly clear, with a low around 79.
Wednesday
Sunny and hot, with a high near 99.
Wednesday Night
Mostly clear, with a low around 79.
Thursday
Sunny and hot, with a high near 100.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles W Prosper TX
 33.25°N 96.86°W (Elev. 594 ft)
Last Update:
1:26 am CDT Aug 28, 2026
Forecast Valid:
5am CDT Aug 28, 2026-6pm CDT Sep 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation