Flooding Threat Continues in Portions of Texas; Poor Air Quality in the Great Lakes through the Mid-Atlantic

Widespread life-threatening flash and urban flooding continues in south-central Texas, with considerable flooding impacts possible across central Texas. Wildfire smoke is impacting air quality across much of the Great Lakes region into southern New England and the Mid-Atlantic. Monsoonal thunderstorms may produce isolated to scattered flash flooding across the Southwest into the Great Basin. Read More >

Current conditions at

Dallas / Addison Airport (KADS)

Lat: 32.97°NLon: 96.83°WElev: 643ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Lewisville TX

  • Today

    Today: Mostly sunny, with a high near 97. Heat index values as high as 103. South wind around 10 mph, with gusts as high as 20 mph.

    High: 97 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 79. South wind 5 to 10 mph.

    Low: 79 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 98. Heat index values as high as 103. South wind 5 to 10 mph.

    High: 98 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 80. South wind 5 to 10 mph.

    Low: 80 °F

    Clear

  • Monday

    Monday: Sunny and hot, with a high near 101. South southwest wind 5 to 10 mph.

    High: 101 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 81. South wind 5 to 10 mph.

    Low: 81 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 103. Southwest wind around 5 mph.

    High: 103 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 83. South southwest wind around 5 mph.

    Low: 83 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 104. Southwest wind around 5 mph becoming southeast in the afternoon.

    High: 104 °F

    Hot

Detailed Forecast

Today
Mostly sunny, with a high near 97. Heat index values as high as 103. South wind around 10 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 79. South wind 5 to 10 mph.
Sunday
Sunny, with a high near 98. Heat index values as high as 103. South wind 5 to 10 mph.
Sunday Night
Clear, with a low around 80. South wind 5 to 10 mph.
Monday
Sunny and hot, with a high near 101. South southwest wind 5 to 10 mph.
Monday Night
Clear, with a low around 81. South wind 5 to 10 mph.
Tuesday
Sunny and hot, with a high near 103. Southwest wind around 5 mph.
Tuesday Night
Clear, with a low around 83. South southwest wind around 5 mph.
Wednesday
Sunny and hot, with a high near 104. Southwest wind around 5 mph becoming southeast in the afternoon.
Wednesday Night
Mostly clear, with a low around 82.
Thursday
Sunny and hot, with a high near 103.
Thursday Night
Mostly clear, with a low around 83.
Friday
Sunny and hot, with a high near 102.
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ABOUT THIS FORECAST

 
Point Forecast:
Lewisville TX
 33.05°N 97°W (Elev. 531 ft)
1:26 am CDT Jul 18, 2026
5am CDT Jul 18, 2026-6pm CDT Jul 24, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database