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

Hot Weather in the West; Heavy Rainfall and Flooding in the Southwest

Hot to extremely hot temperatures are in place much of this week across parts of California and the interior Northwest U.S, with the Pacific Northwest carrying the potential for record-breaking high temperatures. Monsoonal moisture over the Southwest U.S. may lead to heavy rainfall and instances of flash flooding through Wednesday. Read More >

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Mostly Cloudy

89°F

32°C

Humidity 48%
Wind Speed N 8 mph
Barometer 29.97 in (1014.3 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 2 Sep 3:53 pm CDT
Extended Forecast for

McKinney TX

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88. North wind around 5 mph.

    High: 88 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 68. North northeast wind around 5 mph becoming calm in the evening.

    Low: 68 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88. North northwest wind 5 to 10 mph.

    High: 88 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 67. North wind around 5 mph becoming calm.

    Low: 67 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 95. Calm wind becoming southwest around 5 mph in the morning.

    High: 95 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 73. South southeast wind 5 to 10 mph.

    Low: 73 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 95. South wind around 10 mph.

    High: 95 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 71. South southeast wind 5 to 10 mph becoming east after midnight.

    Low: 71 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89. Northeast wind 5 to 10 mph.

    High: 89 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88. North wind around 5 mph.
Tonight
A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 68. North northeast wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 88. North northwest wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 67. North wind around 5 mph becoming calm.
Thursday
Sunny, with a high near 95. Calm wind becoming southwest around 5 mph in the morning.
Thursday Night
Mostly clear, with a low around 73. South southeast wind 5 to 10 mph.
Friday
Partly sunny, with a high near 95. South wind around 10 mph.
Friday Night
Mostly cloudy, with a low around 71. South southeast wind 5 to 10 mph becoming east after midnight.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89. Northeast wind 5 to 10 mph.
Saturday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
McKinney TX
 33.19°N 96.62°W (Elev. 587 ft)
Last Update:
12:25 pm CDT Sep 2, 2025
Forecast Valid:
4pm CDT Sep 2, 2025-6pm CDT Sep 9, 2025
 
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