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

Hazardous Weather Conditions

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Thunderstorm

78°F

26°C

Humidity 69%
Wind Speed NE 6 mph
Barometer 29.95 in (1013.3 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 28 Sep 1:53 am CDT
Extended Forecast for

Prosper TX

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms, mainly before 4am. Mostly cloudy, with a low around 71. East northeast wind around 5 mph.

    Low: 71 °F

    Chance
    T-storms

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly between 10am and 1pm. Mostly sunny, with a high near 90. South southeast wind 5 to 10 mph.

    High: 90 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 73. East southeast wind around 10 mph.

    Low: 73 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 93. Heat index values as high as 99. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 93 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 74. South southeast wind around 15 mph, with gusts as high as 20 mph.

    Low: 74 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 91. South wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

    High: 91 °F

    Chance
    Showers then
    Heavy Rain

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 72. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.

    Low: 72 °F

    Heavy Rain

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 82. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 82 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. East wind around 5 mph.

    Low: 68 °F

    Chance
    T-storms

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms, mainly before 4am. Mostly cloudy, with a low around 71. East northeast wind around 5 mph.
Monday
A 30 percent chance of showers and thunderstorms, mainly between 10am and 1pm. Mostly sunny, with a high near 90. South southeast wind 5 to 10 mph.
Monday Night
Partly cloudy, with a low around 73. East southeast wind around 10 mph.
Tuesday
Mostly sunny, with a high near 93. Heat index values as high as 99. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Partly cloudy, with a low around 74. South southeast wind around 15 mph, with gusts as high as 20 mph.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 91. South wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Wednesday Night
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 72. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
Thursday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 82. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. East wind around 5 mph.
Friday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 77.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Saturday
A 40 percent chance of showers. Mostly cloudy, with a high near 77.
Saturday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Sunday
A 40 percent chance of showers. Mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Prosper TX
 33.23°N 96.78°W (Elev. 748 ft)
Last Update:
1:26 am CDT Sep 28, 2026
Forecast Valid:
2am CDT Sep 28, 2026-6pm CDT Oct 4, 2026
 
Forecast Discussion
 
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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