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.

Partly Cloudy

77°F

25°C

Humidity 88%
Wind Speed S 13 mph
Barometer 29.73 in (1006.1 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 17 Jun 7:53 am CDT
Extended Forecast for

Allen TX

Heat Advisory June 18, 12:00pm until June 18, 09:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Mostly sunny, with a high near 93. Heat index values as high as 102. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 93 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 75. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 97. Heat index values as high as 109. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 97 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers, then a chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 78. Southeast wind 5 to 15 mph. Chance of precipitation is 40%.

    Low: 78 °F

    Chance
    Showers

  • Juneteenth

    Juneteenth: A 40 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 93. Northeast wind 5 to 10 mph becoming east southeast in the afternoon.

    High: 93 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday Night

    Friday Night: Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 76. East wind 5 to 10 mph. Chance of precipitation is 60%.

    Low: 76 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 93. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 93 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 78. South wind around 15 mph, with gusts as high as 20 mph.

    Low: 78 °F

    Partly Cloudy

  • Sunday

    Sunday: 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

Today
Mostly sunny, with a high near 93. Heat index values as high as 102. South wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 75. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday
Mostly sunny, with a high near 97. Heat index values as high as 109. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 78. Southeast wind 5 to 15 mph. Chance of precipitation is 40%.
Juneteenth
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 93. Northeast wind 5 to 10 mph becoming east southeast in the afternoon.
Friday Night
Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 76. East wind 5 to 10 mph. Chance of precipitation is 60%.
Saturday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 93. South wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 78. South wind around 15 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 98. South wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 79.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 96.
Monday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78.
Tuesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 95.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Allen TX
 33.1°N 96.67°W (Elev. 656 ft)
Last Update:
7:07 am CDT Jun 17, 2026
Forecast Valid:
8am CDT Jun 17, 2026-6pm CDT Jun 23, 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