National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

A Few Clouds

88°F

31°C

Humidity 70%
Wind Speed S 13 G 24 mph
Barometer 29.94 in (1013.1 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 22 Jun 12:53 pm CDT
Extended Forecast for

Prosper TX

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 91. Heat index values as high as 102. South wind around 10 mph.

    High: 91 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 77. East wind around 10 mph becoming south southeast after midnight.

    Low: 77 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly before 10am. Mostly cloudy, then gradually becoming sunny, with a high near 93. Heat index values as high as 99. South southwest wind around 10 mph.

    High: 93 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Tuesday Night

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

    Low: 78 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 95. South wind around 10 mph, with gusts as high as 20 mph.

    High: 95 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 77. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 96. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 96 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 78. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 78 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 98. South wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 98 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 91. Heat index values as high as 102. South wind around 10 mph.
Tonight
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 77. East wind around 10 mph becoming south southeast after midnight.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly before 10am. Mostly cloudy, then gradually becoming sunny, with a high near 93. Heat index values as high as 99. South southwest wind around 10 mph.
Tuesday Night
Mostly clear, with a low around 78. South southeast wind around 10 mph.
Wednesday
Sunny, with a high near 95. South wind around 10 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 77. South wind around 10 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 96. South wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 78. South wind around 15 mph, with gusts as high as 25 mph.
Friday
Mostly sunny, with a high near 98. South wind 15 to 20 mph, with gusts as high as 30 mph.
Friday Night
Partly cloudy, with a low around 78.
Saturday
Mostly sunny, with a high near 98.
Saturday Night
Mostly clear, with a low around 78.
Sunday
Mostly sunny and hot, with a high near 100. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Prosper TX
 33.23°N 96.78°W (Elev. 748 ft)
Last Update:
1:26 pm CDT Jun 22, 2026
Forecast Valid:
1pm CDT Jun 22, 2026-6pm CDT Jun 28, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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