Severe Weather and Heavy Rain from the Ohio Valley to the Mid-Atlantic; Heat Persists in the South-Central U.S.

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected across portions of the Ohio Valley into southern Mid-Atlantic and Carolinas. Rounds of strong thunderstorms are expected to develop across the northern and central Plains. Sweltering heat remains most persistent across the South-Central Plains and Lower/Middle Mississippi Valley through next week. Read More >

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Fair

77°F

25°C

Humidity 90%
Wind Speed Calm
Barometer 29.95 in (1013.6 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 6 Sep 7:53 am CDT
Extended Forecast for

McKinney TX

Heat Advisory September 6, 12:00pm until September 6, 08:00pm
Click here for hazard details and duration
Heat Advisory
  • Today

    Today: A 10 percent chance of showers and thunderstorms after 4pm.  Sunny and hot, with a high near 101. Heat index values as high as 105. Light south southeast wind becoming southeast 5 to 10 mph in the afternoon.

    High: 101 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms before 7pm.  Clear, with a low around 79. Southeast wind around 5 mph becoming calm  in the evening.

    Low: 79 °F

    Slight Chance
    T-storms then
    Clear

  • Labor Day

    Labor Day: Sunny and hot, with a high near 101. Heat index values as high as 106. Light and variable wind becoming south southeast 5 to 10 mph in the afternoon.

    High: 101 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 79. Southeast wind 5 to 10 mph.

    Low: 79 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 101. Light south southeast wind increasing to 5 to 10 mph in the afternoon.

    High: 101 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 79. South southeast wind 5 to 10 mph.

    Low: 79 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 101. South wind 5 to 10 mph.

    High: 101 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 78. South southeast wind 5 to 10 mph.

    Low: 78 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 100. South wind 5 to 10 mph becoming east southeast in the afternoon.

    High: 100 °F

    Hot

Detailed Forecast

Today
A 10 percent chance of showers and thunderstorms after 4pm. Sunny and hot, with a high near 101. Heat index values as high as 105. Light south southeast wind becoming southeast 5 to 10 mph in the afternoon.
Tonight
A 10 percent chance of showers and thunderstorms before 7pm. Clear, with a low around 79. Southeast wind around 5 mph becoming calm in the evening.
Labor Day
Sunny and hot, with a high near 101. Heat index values as high as 106. Light and variable wind becoming south southeast 5 to 10 mph in the afternoon.
Monday Night
Mostly clear, with a low around 79. Southeast wind 5 to 10 mph.
Tuesday
Sunny and hot, with a high near 101. Light south southeast wind increasing to 5 to 10 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 79. South southeast wind 5 to 10 mph.
Wednesday
Sunny and hot, with a high near 101. South wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 78. South southeast wind 5 to 10 mph.
Thursday
Sunny and hot, with a high near 100. South wind 5 to 10 mph becoming east southeast in the afternoon.
Thursday Night
Partly cloudy, with a low around 78.
Friday
Mostly sunny and hot, with a high near 100.
Friday Night
Partly cloudy, with a low around 77.
Saturday
Sunny and hot, with a high near 100.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
McKinney TX
 33.19°N 96.62°W (Elev. 587 ft)
6:06 am CDT Sep 6, 2026
8am CDT Sep 6, 2026-6pm CDT Sep 12, 2026
 
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