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

Lala Approaching Hawaii; Flash Flooding Risks; Excessive Heat

Lala, may become a hurricane, is expected to impact Hawaii this weekend. Heavy rainfall, strong winds, dangerous surf and localized flooding are expected. Heavy rainfall and flash flooding concerns from the mid-Mississippi Valley, Ohio Valley into the central Appalachians continues, with the threat shifting toward the mid-Atlantic later this weekend. Record heat continues for areas of the South. Read More >

Hazardous Weather Conditions

Current conditions at

Dallas / Addison Airport (KADS)

Lat: 32.97°NLon: 96.83°WElev: 643ft.

Clear

82°F

28°C

Humidity 62%
Wind Speed S 10 G 17 mph
Barometer 30.09 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 15 Aug 5:55 am CDT
Extended Forecast for

Lewisville TX

Heat Advisory August 15, 12:00pm until August 15, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Sunny and hot, with a high near 102. Heat index values as high as 107. South wind around 10 mph, with gusts as high as 20 mph.

    High: 102 °F

    Hot

  • Tonight

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

    Low: 82 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 104. South southwest wind 5 to 10 mph.

    High: 104 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 81. South wind around 5 mph.

    Low: 81 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 104. South southwest wind around 5 mph.

    High: 104 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 82. South southeast wind around 5 mph.

    Low: 82 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 104. South southwest wind 5 to 10 mph.

    High: 104 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 82. South wind around 10 mph.

    Low: 82 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 104. South southwest wind around 10 mph.

    High: 104 °F

    Hot

Detailed Forecast

Today
Sunny and hot, with a high near 102. Heat index values as high as 107. South wind around 10 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 82. South wind around 10 mph, with gusts as high as 20 mph.
Sunday
Sunny and hot, with a high near 104. South southwest wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 81. South wind around 5 mph.
Monday
Sunny and hot, with a high near 104. South southwest wind around 5 mph.
Monday Night
Mostly clear, with a low around 82. South southeast wind around 5 mph.
Tuesday
Sunny and hot, with a high near 104. South southwest wind 5 to 10 mph.
Tuesday Night
Clear, with a low around 82. South wind around 10 mph.
Wednesday
Sunny and hot, with a high near 104. South southwest wind around 10 mph.
Wednesday Night
Clear, with a low around 82.
Thursday
Sunny and hot, with a high near 103.
Thursday Night
Mostly clear, with a low around 81.
Friday
Mostly sunny and hot, with a high near 102.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lewisville TX
 33.05°N 97°W (Elev. 531 ft)
Last Update:
1:26 am CDT Aug 15, 2026
Forecast Valid:
6am CDT Aug 15, 2026-6pm CDT Aug 21, 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