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

Extreme Heat Continues; Severe Thunderstorms into Upper Midwest; Strong Bering Sea Storm

Wildfires and poor air quality continue for the Pacific Northwest, Rockies and extended into the Plains. Severe thunderstorms possible for the northern Plains and upper Midwest on Monday along a frontal boundary. Another boundary will focus showers and thunderstorms for the eastern seaboard with localized heavy rainfall possible. For Alaska, a strong Bering Sea storm will bring winds and rainfall. Read More >

Hazardous Weather Conditions

Current conditions at

Dallas / Addison Airport (KADS)

Lat: 32.97°NLon: 96.83°WElev: 643ft.

A Few Clouds

93°F

34°C

Humidity 32%
Wind Speed Calm
Barometer 29.90 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 2 Aug 3:53 pm CDT
Extended Forecast for

Lewisville TX

  • Tonight

    Tonight: Clear, with a low around 75. North northeast wind around 5 mph becoming calm in the evening.

    Low: 75 °F

    Clear

  • Monday

    Monday: Sunny and hot, with a high near 101. Calm wind becoming south southeast around 5 mph.

    High: 101 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 78. Southeast wind 5 to 10 mph.

    Low: 78 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 102. South wind around 5 mph.

    High: 102 °F

    Hot

  • Tuesday Night

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

    Low: 80 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 101. South southwest wind around 10 mph.

    High: 101 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 80. South southeast wind around 10 mph.

    Low: 80 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 100. South wind 5 to 10 mph.

    High: 100 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 80. South southeast wind around 10 mph.

    Low: 80 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 75. North northeast wind around 5 mph becoming calm in the evening.
Monday
Sunny and hot, with a high near 101. Calm wind becoming south southeast around 5 mph.
Monday Night
Clear, with a low around 78. Southeast wind 5 to 10 mph.
Tuesday
Sunny and hot, with a high near 102. South wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 80. South southeast wind 5 to 10 mph.
Wednesday
Sunny and hot, with a high near 101. South southwest wind around 10 mph.
Wednesday Night
Mostly clear, with a low around 80. South southeast wind around 10 mph.
Thursday
Sunny and hot, with a high near 100. South wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 80. South southeast wind around 10 mph.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 99.
Friday Night
Mostly clear, with a low around 80.
Saturday
Sunny and hot, with a high near 99.
Saturday Night
Mostly clear, with a low around 79.
Sunday
Sunny and hot, with a high near 99.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lewisville TX
 33.05°N 97°W (Elev. 531 ft)
Last Update:
3:35 pm CDT Aug 2, 2026
Forecast Valid:
4pm CDT Aug 2, 2026-6pm CDT Aug 9, 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