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

Areas of Severe Thunderstorms, Excessive Rainfall, and Extreme Heat Wednesday

In the Upper Midwest, heavy to excessive rain may bring flash and urban flooding through Wednesday. Scattered severe thunderstorms capable of large hail and damaging wind gusts are possible from the central High Plains into the Upper Midwest Wednesday. Extreme heat is ongoing over the Desert Southwest through Thursday. Read More >

Current conditions at

Dallas/Fort Worth International Airport (KDFW)

Lat: 32.9°NLon: 97.02°WElev: 541ft.

Mostly Cloudy

90°F

32°C

Humidity 48%
Wind Speed S 12 mph
Barometer 29.97 in (1013.8 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index94°F (34°C)
Last update 7 Jul 7:53 pm CDT
Extended Forecast for

Lewisville TX

  • Tonight

    Tonight: Isolated showers and thunderstorms after 4am. Partly cloudy, with a low around 77. Southeast wind 5 to 15 mph. Chance of precipitation is 20%.

    Low: 77 °F

    Partly Cloudy
    then Isolated
    T-storms

  • Wednesday

    Wednesday: Isolated showers and thunderstorms before 7am. Sunny and hot, with a high near 100. Heat index values as high as 105. South wind 5 to 10 mph. Chance of precipitation is 10%.

    High: 100 °F

    Isolated
    T-storms then
    Sunny

  • Wednesday Night

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

    Low: 80 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 101. Heat index values as high as 105. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 101 °F

    Hot

  • Thursday Night

    Thursday Night: Clear, with a low around 81. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 81 °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: Clear, with a low around 81. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 81 °F

    Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 100. South wind around 10 mph.

    High: 100 °F

    Hot

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 80. South wind around 10 mph.

    Low: 80 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

Detailed Forecast

Tonight
Isolated showers and thunderstorms after 4am. Partly cloudy, with a low around 77. Southeast wind 5 to 15 mph. Chance of precipitation is 20%.
Wednesday
Isolated showers and thunderstorms before 7am. Sunny and hot, with a high near 100. Heat index values as high as 105. South wind 5 to 10 mph. Chance of precipitation is 10%.
Wednesday Night
Mostly clear, with a low around 80. South wind around 10 mph.
Thursday
Sunny and hot, with a high near 101. Heat index values as high as 105. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Clear, with a low around 81. 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
Clear, with a low around 81. South wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday
Sunny and hot, with a high near 100. South wind around 10 mph.
Saturday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 80. South wind around 10 mph.
Sunday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 94.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 79.
Monday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95.
Monday Night
Mostly clear, with a low around 79.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 96.
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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:
8:06 pm CDT Jul 7, 2026
Forecast Valid:
8pm CDT Jul 7, 2026-6pm CDT Jul 14, 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