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

Dallas / Addison Airport (KADS)

Lat: 32.97°NLon: 96.83°WElev: 643ft.

Fair

81°F

27°C

Humidity 74%
Wind Speed S 9 mph
Barometer 29.85 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 21 Jun 12:55 am CDT
Extended Forecast for

Lewisville TX

  • Overnight

    Overnight: Mostly clear, with a low around 77. South wind around 10 mph.

    Low: 77 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 94. Heat index values as high as 102. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 94 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 79. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 79 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 94. Heat index values as high as 102. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 94 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 78. South wind around 10 mph. Chance of precipitation is 20%.

    Low: 78 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of thunderstorms before 7am. Mostly sunny, with a high near 97. South southwest wind around 10 mph. Chance of precipitation is 10%.

    High: 97 °F

    Slight Chance
    T-storms then
    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78. South wind 5 to 10 mph.

    Low: 78 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94. South wind around 5 mph.

    High: 94 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 76. South southeast wind 5 to 10 mph.

    Low: 76 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Mostly clear, with a low around 77. South wind around 10 mph.
Sunday
Mostly sunny, with a high near 94. Heat index values as high as 102. South wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
A slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 79. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Monday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 94. Heat index values as high as 102. South wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
A slight chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 78. South wind around 10 mph. Chance of precipitation is 20%.
Tuesday
A slight chance of thunderstorms before 7am. Mostly sunny, with a high near 97. South southwest wind around 10 mph. Chance of precipitation is 10%.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78. South wind 5 to 10 mph.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94. South wind around 5 mph.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 76. South southeast wind 5 to 10 mph.
Thursday
Mostly sunny, with a high near 94.
Thursday Night
Partly cloudy, with a low around 77.
Friday
Mostly sunny, with a high near 96.
Friday Night
Partly cloudy, with a low around 79.
Saturday
Mostly sunny and hot, with a high near 99.
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ABOUT THIS FORECAST

 
Point Forecast:
Lewisville TX
 33.05°N 97°W (Elev. 531 ft)
Last Update:
6:06 pm CDT Jun 20, 2026
Forecast Valid:
1am CDT Jun 21, 2026-6pm CDT Jun 27, 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