Monsoon Flood Threat in the Southwest; Hot in the South and Northwest

Monsoonal heavy rain will continue flash flood potential across the Southwest and Intermountain West to the central and southern Rockies through this weekend, especially in complex terrain, burn scars, and urban areas. Excessive heat and humidity with heat indices over 110 degrees will be common over much of the Deep South and interior Northwest this weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Dallas / Addison Airport (KADS)

Lat: 32.97°NLon: 96.83°WElev: 643ft.

Fair

83°F

28°C

Humidity 71%
Wind Speed S 5 mph
Barometer 30.05 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 31 Jul 3:15 am CDT
Extended Forecast for

Lewisville TX

Heat Advisory until July 31, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until July 31, 07:00pm

    NOW until
    7:00pm Sat

    Heat Advisory

  • Overnight

    Overnight: Mostly clear, with a steady temperature around 84. South wind around 5 mph.

    Mostly Clear

    Low: 84 °F

  • Saturday

    Saturday: Sunny and hot, with a high near 100. Heat index values as high as 108. South wind 5 to 10 mph.

    Hot

    High: 100 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 80. South wind 5 to 10 mph.

    Mostly Clear

    Low: 80 °F

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after 1pm.  Sunny and hot, with a high near 100. Heat index values as high as 107. South wind around 5 mph becoming east in the afternoon.

    Sunny then
    Chance
    T-storms

    High: 100 °F

  • Sunday
    Night

    Sunday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 76. North northeast wind around 10 mph.  Chance of precipitation is 60%.

    Showers
    Likely

    Low: 76 °F

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 93. North northeast wind 10 to 15 mph.

    Chance
    T-storms

    High: 93 °F

  • Monday
    Night

    Monday Night: Mostly clear, with a low around 72. Northeast wind 5 to 10 mph.

    Mostly Clear

    Low: 72 °F

  • Tuesday

    Tuesday: Mostly sunny, with a high near 94. East northeast wind 5 to 10 mph.

    Mostly Sunny

    High: 94 °F

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 84. South wind around 5 mph.
Saturday
Sunny and hot, with a high near 100. Heat index values as high as 108. South wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 80. South wind 5 to 10 mph.
Sunday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 100. Heat index values as high as 107. South wind around 5 mph becoming east in the afternoon.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 76. North northeast wind around 10 mph. Chance of precipitation is 60%.
Monday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93. North northeast wind 10 to 15 mph.
Monday Night
Mostly clear, with a low around 72. Northeast wind 5 to 10 mph.
Tuesday
Mostly sunny, with a high near 94. East northeast wind 5 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 74. East southeast wind 5 to 10 mph.
Wednesday
A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 91. Chance of precipitation is 20%.
Wednesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 74.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Thursday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 75.
Friday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 94.
Click Map For Forecast
Point Forecast:
Lewisville TX
 33.05°N 96.97°W (Elev. 456 ft)
11:14 pm CDT Jul 30, 2021
3am CDT Jul 31, 2021-6pm CDT Aug 6, 2021
 
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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