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

Hazardous Weather Conditions

Current conditions at

Dallas / Addison Airport (KADS)

Lat: 32.97°NLon: 96.83°WElev: 643ft.

Overcast

82°F

28°C

Humidity 70%
Wind Speed S 13 G 18 mph
Barometer 29.83 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 30 Sep 4:16 am CDT
Extended Forecast for

Lewisville TX

Flood Watch September 30, 04:00pm until October 2, 07:00am
Click here for hazard details and duration
Flood Watch

  • Today

    Today: A 40 percent chance of showers and thunderstorms after 1pm. Cloudy, with a high near 93. Heat index values as high as 98. South wind around 15 mph, with gusts as high as 30 mph.

    High: 93 °F

    Cloudy then
    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 74. South southeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 74 °F

    Chance
    T-storms then
    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm before 4pm, then a chance of showers and thunderstorms after 4pm. High near 84. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    High: 84 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Low around 71. Southeast wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 71 °F

    Showers

  • Friday

    Friday: Showers, with thunderstorms also possible after 1pm. High near 82. South southeast wind 5 to 10 mph becoming north northeast in the morning. Chance of precipitation is 80%.

    High: 82 °F

    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. North wind 5 to 10 mph. Chance of precipitation is 60%.

    Low: 67 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 79. North northeast wind 5 to 10 mph. Chance of precipitation is 60%.

    High: 79 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 67. North wind 5 to 10 mph.

    Low: 67 °F

    Chance
    Showers

  • Sunday

    Sunday: A 30 percent chance of showers. Partly sunny, with a high near 81. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 81 °F

    Chance
    Showers

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms after 1pm. Cloudy, with a high near 93. Heat index values as high as 98. South wind around 15 mph, with gusts as high as 30 mph.
Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 74. South southeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday
Showers and possibly a thunderstorm before 4pm, then a chance of showers and thunderstorms after 4pm. High near 84. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Thursday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Low around 71. Southeast wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
Showers, with thunderstorms also possible after 1pm. High near 82. South southeast wind 5 to 10 mph becoming north northeast in the morning. Chance of precipitation is 80%.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. North wind 5 to 10 mph. Chance of precipitation is 60%.
Saturday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 79. North northeast wind 5 to 10 mph. Chance of precipitation is 60%.
Saturday Night
A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 67. North wind 5 to 10 mph.
Sunday
A 30 percent chance of showers. Partly sunny, with a high near 81. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 64.
Monday
Sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 61.
Tuesday
Sunny, with a high near 80.
Basemap Options
Click map to change the forecast location
Loading map...
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 30, 2026
Forecast Valid:
4am CDT Sep 30, 2026-6pm CDT Oct 6, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation