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

Tropical Storm Edouard to Impact the Northwest Gulf Coast; Heat Expands Eastward

Tropical Storm Edouard will bring tropical storm to hurricane conditions, heavy rainfall, flash and some river flooding, and storm surge to portions of Upper Texas and southwestern Louisiana coasts into Wednesday. Severe thunderstorms are possible in the Central Plains and Mid-Atlantic. Hot and humid conditions will expand from the Central Plains into the Ohio Valley and Mid-Atlantic. Read More >

Hazardous Weather Conditions

Current conditions at

Dallas/Fort Worth International Airport (KDFW)

Lat: 32.9°NLon: 97.02°WElev: 541ft.

Partly Cloudy

98°F

37°C

Humidity 34%
Wind Speed Vrbl 5 mph
Barometer 29.95 in (1013.0 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index101°F (38°C)
Last update 1 Sep 2:53 pm CDT
Extended Forecast for

Lewisville TX

  • This Afternoon

    This Afternoon: A 10 percent chance of showers after 4pm. Sunny and hot, with a high near 100. Heat index values as high as 106. Southeast wind around 5 mph.

    High: 100 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Mostly clear, with a low around 80. Southeast wind 5 to 10 mph.

    Low: 80 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 10 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 98. Heat index values as high as 105. East wind 5 to 10 mph.

    High: 98 °F

    Sunny then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers, mainly after 1am. Increasing clouds, with a low around 78. Southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 78 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 95. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 95 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A slight chance of thunderstorms before 7pm. Partly cloudy, with a low around 78. South southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 10%.

    Low: 78 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: A 10 percent chance of showers before 1pm. Mostly sunny, with a high near 98. South wind 5 to 10 mph.

    High: 98 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 78. South southeast wind 5 to 10 mph.

    Low: 78 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 100. Southeast wind around 5 mph.

    High: 100 °F

    Hot

Detailed Forecast

This Afternoon
A 10 percent chance of showers after 4pm. Sunny and hot, with a high near 100. Heat index values as high as 106. Southeast wind around 5 mph.
Tonight
Mostly clear, with a low around 80. Southeast wind 5 to 10 mph.
Wednesday
A 10 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 98. Heat index values as high as 105. East wind 5 to 10 mph.
Wednesday Night
A 30 percent chance of showers, mainly after 1am. Increasing clouds, with a low around 78. Southeast wind around 10 mph, with gusts as high as 20 mph.
Thursday
A chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 95. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Thursday Night
A slight chance of thunderstorms before 7pm. Partly cloudy, with a low around 78. South southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 10%.
Friday
A 10 percent chance of showers before 1pm. Mostly sunny, with a high near 98. South wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 78. South southeast wind 5 to 10 mph.
Saturday
Sunny and hot, with a high near 100. Southeast wind around 5 mph.
Saturday Night
Mostly clear, with a low around 80.
Sunday
Sunny and hot, with a high near 100.
Sunday Night
Mostly clear, with a low around 80.
Labor Day
Sunny and hot, with a high near 101.
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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 pm CDT Sep 1, 2026
Forecast Valid:
3pm CDT Sep 1, 2026-6pm CDT Sep 7, 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