Areas of Severe Thunderstorms and Heat

Scattered severe thunderstorms and excessive rainfall are possible today in the Mid Atlantic, posing a risk for damaging winds and isolated flash flooding. Extreme Heat Warnings are in effect today for northeast Texas into southern Oklahoma and Arkansas. Extreme Heat Warnings are also in effect for the Desert Southwest today into Sunday. Read More >

Hazardous Weather Conditions

Extreme Heat Warning until August 21, 08:00 PM CDT

Current conditions at

Dallas / Addison Airport (KADS)

Lat: 32.97°NLon: 96.83°WElev: 643ft.

Clear

100°F

38°C

Humidity	29%
Wind Speed	E 9 mph
Barometer	29.98 in
Dewpoint	63°F (17°C)
Visibility	10.00 mi
Heat Index	102°F (39°C)
Last update	20 Aug 1:53 pm CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Lewisville TX

Extreme Heat Warning August 20, 02:16pm until August 21, 08:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning August 20, 02:16pm until August 21, 08:00pm
NOW until 8:00pm Fri
Extreme Heat Warning
This Afternoon
High: 106 °F
Hot
Tonight
Low: 83 °F
Mostly Clear
Friday
High: 107 °F
Sunny then
Slight Chance
T-storms
Friday Night
Low: 83 °F
Slight Chance
T-storms then
Partly Cloudy
Saturday
High: 107 °F
Hot
Saturday Night
Low: 82 °F
Mostly Clear
Sunday
High: 106 °F
Hot
Sunday Night
Low: 84 °F
Mostly Clear

Detailed Forecast

This Afternoon

Sunny and hot, with a high near 106. Heat index values as high as 109. South southeast wind around 5 mph.

Tonight

Mostly clear, with a low around 83. South wind around 5 mph.

Friday

A 20 percent chance of showers and thunderstorms after 4pm. Sunny and hot, with a high near 107. Heat index values as high as 110. Calm wind becoming east southeast around 5 mph in the afternoon.

Friday Night

A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 83. South wind around 5 mph.

Saturday

Sunny and hot, with a high near 107. South southwest wind around 5 mph.

Saturday Night

Mostly clear, with a low around 82. South southwest wind around 5 mph.

Sunday

Sunny and hot, with a high near 106. Southwest wind around 5 mph.

Sunday Night

Mostly clear, with a low around 84. South southeast wind around 10 mph.

Monday

Sunny and hot, with a high near 106. South southwest wind around 10 mph.