Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Mostly Cloudy

90°F

32°C

Humidity 50%
Wind Speed S 7 mph
Barometer 30.02 in (1016.0 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 19 Sep 11:53 am CDT
Extended Forecast for

Allen TX

  • This Afternoon

    This Afternoon: Mostly sunny and hot, with a high near 99. Heat index values as high as 102. South southeast wind around 10 mph.

    High: 99 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 77. South southeast wind around 10 mph.

    Low: 77 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 4pm.  Mostly sunny and hot, with a high near 99. Heat index values as high as 107. South wind 5 to 10 mph.

    High: 99 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am.  Mostly cloudy, with a low around 75. South southeast wind around 5 mph.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 75 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly before 1pm.  Mostly sunny, with a high near 95. South southeast wind around 5 mph becoming north northwest in the afternoon.

    High: 95 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 72. North northeast wind 5 to 10 mph.

    Low: 72 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 91. North northeast wind around 10 mph, with gusts as high as 20 mph.

    High: 91 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 69. North northeast wind around 10 mph.

    Low: 69 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 91. East northeast wind around 10 mph.

    High: 91 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny and hot, with a high near 99. Heat index values as high as 102. South southeast wind around 10 mph.
Tonight
Mostly clear, with a low around 77. South southeast wind around 10 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny and hot, with a high near 99. Heat index values as high as 107. South wind 5 to 10 mph.
Sunday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 75. South southeast wind around 5 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 95. South southeast wind around 5 mph becoming north northwest in the afternoon.
Monday Night
Partly cloudy, with a low around 72. North northeast wind 5 to 10 mph.
Tuesday
Mostly sunny, with a high near 91. North northeast wind around 10 mph, with gusts as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 69. North northeast wind around 10 mph.
Wednesday
Mostly sunny, with a high near 91. East northeast wind around 10 mph.
Wednesday Night
Partly cloudy, with a low around 69.
Thursday
Mostly sunny, with a high near 92.
Thursday Night
Partly cloudy, with a low around 70.
Friday
Mostly sunny, with a high near 92.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Allen TX
 33.12°N 96.67°W (Elev. 653 ft)
6:06 am CDT Sep 19, 2026
12pm CDT Sep 19, 2026-6pm CDT Sep 25, 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