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

Extreme Heat Lingers; Severe Thunderstorms for Portions of the Plains and Southeast; Heavy Rainfall Threats

Gusty winds and heavy rainfall may impact the Big Island of Hawaii as a nearby tropical system passes west of the islands. From the Southwest U.S., Rockies and across the Gulf Coast, heavy rainfall could lead to isolated flash flooding. Severe thunderstorms are expected for areas of the Plains, Gulf Coast and Southeast through Tuesday. Extreme heat lingers for the southern Plains and Southwest. Read More >

Hazardous Weather Conditions

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Fair

88°F

31°C

Humidity 43%
Wind Speed S 9 mph
Barometer 29.91 in (1011.7 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 24 Aug 5:53 am CDT
Extended Forecast for

3 Miles SW Melissa TX

Extreme Heat Warning August 24, 06:36am until August 24, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 24, 06:36am until August 24, 09:00pm

    NOW until 9:00pm Mon

    Extreme Heat Warning

  • Today

    High: 107 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 82. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 82 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 105. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 105 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 80. South wind 5 to 10 mph.

    Low: 80 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 102. South southwest wind around 10 mph becoming northwest in the afternoon.

    High: 102 °F

    Hot

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 77. North northeast wind around 5 mph.

    Low: 77 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny and hot, with a high near 99. Northeast wind 5 to 10 mph.

    High: 99 °F

    Hot

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 75. East wind 5 to 10 mph.

    Low: 75 °F

    Partly Cloudy

Detailed Forecast

Today
Mostly sunny and hot, with a high near 107. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 82. South wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny and hot, with a high near 105. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 80. South wind 5 to 10 mph.
Wednesday
Mostly sunny and hot, with a high near 102. South southwest wind around 10 mph becoming northwest in the afternoon.
Wednesday Night
Partly cloudy, with a low around 77. North northeast wind around 5 mph.
Thursday
Mostly sunny and hot, with a high near 99. Northeast wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 75. East wind 5 to 10 mph.
Friday
Sunny and hot, with a high near 99. East southeast wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 77.
Saturday
Sunny and hot, with a high near 100.
Saturday Night
Clear, with a low around 78.
Sunday
Sunny and hot, with a high near 100.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Melissa TX
 33.26°N 96.59°W (Elev. 597 ft)
Last Update:
6:12 am CDT Aug 24, 2026
Forecast Valid:
6am CDT Aug 24, 2026-6pm CDT Aug 30, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation