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

82°F

28°C

Humidity 58%
Wind Speed S 8 mph
Barometer 29.92 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 20 Sep 3:35 am CDT
Extended Forecast for

Lewisville TX

  • Overnight

    Overnight: Partly cloudy, with a low around 79. South wind around 10 mph.

    Low: 79 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 96. Heat index values as high as 100. South wind 5 to 10 mph.

    High: 96 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms. Cloudy, then gradually becoming partly cloudy, with a low around 73. North wind around 5 mph becoming south in the evening.

    Low: 73 °F

    Chance
    T-storms

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms, mainly after 10am. Mostly sunny, with a high near 93. Heat index values as high as 100. East wind around 5 mph becoming west in the afternoon.

    High: 93 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75. North northeast wind around 5 mph.

    Low: 75 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: Mostly sunny, with a high near 93. North northeast wind around 10 mph, with gusts as high as 20 mph.

    High: 93 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 73. Northeast wind 5 to 10 mph.

    Low: 73 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 93. East northeast wind 5 to 10 mph.

    High: 93 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 72. East northeast wind 5 to 10 mph.

    Low: 72 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 79. South wind around 10 mph.
Sunday
Mostly sunny, with a high near 96. Heat index values as high as 100. South wind 5 to 10 mph.
Sunday Night
A 40 percent chance of showers and thunderstorms. Cloudy, then gradually becoming partly cloudy, with a low around 73. North wind around 5 mph becoming south in the evening.
Monday
A 40 percent chance of showers and thunderstorms, mainly after 10am. Mostly sunny, with a high near 93. Heat index values as high as 100. East wind around 5 mph becoming west in the afternoon.
Monday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75. North northeast wind around 5 mph.
Tuesday
Mostly sunny, with a high near 93. North northeast wind around 10 mph, with gusts as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 73. Northeast wind 5 to 10 mph.
Wednesday
Mostly sunny, with a high near 93. East northeast wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 72. East northeast wind 5 to 10 mph.
Thursday
Mostly sunny, with a high near 93.
Thursday Night
Partly cloudy, with a low around 72.
Friday
Partly sunny, with a high near 90.
Friday Night
Mostly cloudy, with a low around 72.
Saturday
Partly sunny, with a high near 89.
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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 am CDT Sep 20, 2026
Forecast Valid:
3am CDT Sep 20, 2026-6pm CDT Sep 26, 2026
 
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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