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

Areas of Severe Thunderstorms, Excessive Rainfall, and Extreme Heat Saturday

Severe thunderstorms capable of damaging winds will be possible from the Ozark Plateau east into the Tennessee Valley Saturday. Rounds of heavy thunderstorms ahead of a slow moving front will continue locally heavy rainfall and scattered flash flooding potential from the Ozarks to the Ohio and Tennessee Valleys Saturday. Extreme heat will continue for the Intermountain West and Plains. Read More >

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Fair

78°F

26°C

Humidity 82%
Wind Speed S 6 mph
Barometer 30.05 in (1016.6 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 11 Jul 6:53 am CDT
Extended Forecast for

Collin County Regional Airport TX

  • Today

    Today: Sunny, with a high near 98. Heat index values as high as 103. South wind around 10 mph.

    High: 98 °F

    Sunny

  • Tonight

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

    Low: 78 °F

    Mostly Clear

  • Sunday

    Sunday: A slight chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 96. Heat index values as high as 105. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 40%.

    High: 96 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 75. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 75 °F

    Showers
    Likely

  • Monday

    Monday: A slight chance of showers, with thunderstorms also possible after 7am. Mostly sunny, with a high near 92. Calm wind becoming east northeast around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 92 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 74. East southeast wind around 5 mph becoming calm in the evening.

    Low: 74 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 91 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 73. South southeast wind around 5 mph becoming calm in the evening.

    Low: 73 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 93. Southwest wind around 5 mph.

    High: 93 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 98. Heat index values as high as 103. South wind around 10 mph.
Tonight
Mostly clear, with a low around 78. South wind 5 to 10 mph.
Sunday
A slight chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 96. Heat index values as high as 105. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 40%.
Sunday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 75. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A slight chance of showers, with thunderstorms also possible after 7am. Mostly sunny, with a high near 92. Calm wind becoming east northeast around 5 mph in the afternoon. Chance of precipitation is 20%.
Monday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 74. East southeast wind around 5 mph becoming calm in the evening.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. Calm wind becoming southeast around 5 mph in the afternoon.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 73. South southeast wind around 5 mph becoming calm in the evening.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 93. Southwest wind around 5 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 75.
Thursday
Mostly sunny, with a high near 96.
Thursday Night
Mostly clear, with a low around 78.
Friday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 98.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Collin County Regional Airport TX
 33.19°N 96.59°W (Elev. 554 ft)
Last Update:
6:06 am CDT Jul 11, 2026
Forecast Valid:
7am CDT Jul 11, 2026-6pm CDT Jul 17, 2026
 
Forecast Discussion
 
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Additional Resources

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