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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Hazardous Weather Conditions

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Fair

82°F

28°C

Humidity 56%
Wind Speed Calm
Barometer 30.01 in (1015.3 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 27 Aug 11:53 pm CDT
Extended Forecast for

3 Miles E Lucas TX

  • Overnight

    Overnight: Mostly clear, with a low around 76. Southeast wind around 5 mph.

    Low: 76 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 100. Calm wind becoming east northeast around 5 mph in the afternoon.

    High: 100 °F

    Hot

  • Friday Night

    Friday Night: Patchy smoke after 4am. Mostly clear, with a low around 76. East wind around 5 mph.

    Low: 76 °F

    Clear then
    Patchy Smoke

  • Saturday

    Saturday: Sunny and hot, with a high near 100. Southeast wind around 5 mph.

    High: 100 °F

    Hot

  • Saturday Night

    Saturday Night: Clear, with a low around 77. Southeast wind 5 to 10 mph.

    Low: 77 °F

    Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 100. South wind around 10 mph.

    High: 100 °F

    Hot

  • Sunday Night

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

    Low: 78 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 99. South wind around 10 mph.

    High: 99 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 78. South southeast wind 10 to 15 mph.

    Low: 78 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 76. Southeast wind around 5 mph.
Friday
Sunny and hot, with a high near 100. Calm wind becoming east northeast around 5 mph in the afternoon.
Friday Night
Patchy smoke after 4am. Mostly clear, with a low around 76. East wind around 5 mph.
Saturday
Sunny and hot, with a high near 100. Southeast wind around 5 mph.
Saturday Night
Clear, with a low around 77. Southeast wind 5 to 10 mph.
Sunday
Sunny and hot, with a high near 100. South wind around 10 mph.
Sunday Night
Mostly clear, with a low around 78. South southeast wind around 10 mph.
Monday
Sunny and hot, with a high near 99. South wind around 10 mph.
Monday Night
Mostly clear, with a low around 78. South southeast wind 10 to 15 mph.
Tuesday
Sunny and hot, with a high near 99.
Tuesday Night
Mostly clear, with a low around 78.
Wednesday
Sunny and hot, with a high near 99.
Wednesday Night
Mostly clear, with a low around 79.
Thursday
Sunny and hot, with a high near 100.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Lucas TX
 33.1°N 96.51°W (Elev. 528 ft)
Last Update:
12:01 am CDT Aug 28, 2026
Forecast Valid:
12am CDT Aug 28, 2026-6pm CDT Sep 3, 2026
 
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