Thunderstorms and Heavy Rainfall from the Plains to the Mid-Atlantic

Severe thunderstorms producing damaging winds are most likely over parts of the Dakotas into Minnesota from this afternoon into the overnight, with other isolated storms producing hail or wind over the northern High Plains. In the Northern Plains into the Upper Great Lakes and Mid-Atlantic, heavy to excessive rain may bring flash and urban flooding through Wednesday. Read More >

Current conditions at

Dallas/Fort Worth International Airport (KDFW)

Lat: 32.9°NLon: 97.02°WElev: 541ft.

A Few Clouds

85°F

29°C

Humidity 55%
Wind Speed Vrbl 5 mph
Barometer 30.06 in (1017.0 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 7 Jul 8:53 am CDT
Extended Forecast for

Lewisville TX

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 1pm.  Sunny and hot, with a high near 99. Heat index values as high as 103. South southwest wind around 5 mph becoming east northeast in the afternoon.

    High: 99 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 10pm.  Mostly clear, with a low around 77. South southeast wind around 5 mph.

    Low: 77 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 99. Heat index values as high as 104. South southwest wind 5 to 10 mph.

    High: 99 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 79. South wind around 10 mph.

    Low: 79 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 100. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 100 °F

    Hot

  • Thursday Night

    Thursday Night: Clear, with a low around 79. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 79 °F

    Clear

  • Friday

    Friday: Sunny and hot, with a high near 99. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 99 °F

    Hot

  • Friday Night

    Friday Night: 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

  • Saturday

    Saturday: Sunny, with a high near 97. South wind around 10 mph.

    High: 97 °F

    Sunny

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 99. Heat index values as high as 103. South southwest wind around 5 mph becoming east northeast in the afternoon.
Tonight
A 20 percent chance of showers and thunderstorms before 10pm. Mostly clear, with a low around 77. South southeast wind around 5 mph.
Wednesday
Mostly sunny and hot, with a high near 99. Heat index values as high as 104. South southwest wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 79. South wind around 10 mph.
Thursday
Sunny and hot, with a high near 100. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Clear, with a low around 79. South wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Sunny and hot, with a high near 99. South wind 10 to 15 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 82. South wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 97. South wind around 10 mph.
Saturday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 81.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 98.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 80.
Monday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 97.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Lewisville TX
 33.05°N 97°W (Elev. 531 ft)
6:06 am CDT Jul 7, 2026
9am CDT Jul 7, 2026-6pm CDT Jul 13, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database