Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

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Last Map Update: Wed, Aug 19, 2026 at 5:10:25 pm CDT

Watches, Warnings & Advisories

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National Weather Service Austin/San Antonio, TX

National Weather Service Houston/Galveston, TX

National Weather Service Lake Charles, LA

Extreme Heat Warning

Heat Advisory

Hazardous Weather Outlook

Extreme Heat Warning and Heat Advisory in Effect

Heat Continues with Low Storm Chances

A Hot Weekend Forecast

Above-Average August Temperatures

Extreme Heat Safety

An Extreme Heat Warning remains in effect through 8pm Thursday for North Texas, where afternoon high temperatures up to 108 degrees can be expected. A Heat Advisory remains in effect through 8pm Thursday across Central Texas, where afternoon heat indices up to 109 degrees can be expected. Remember to drink plenty of water, to take frequent breaks in the shade or A/C, and to look before you lock your vehicle!

Unseasonably hot conditions will continue, but a few thunderstorms will be possible across the northeast on Thursday associated with a weak front. Gusty winds and frequent lightning would be the main storm threats. Otherwise, continue to stay cool and hydrated!

Temperatures will climb well into the triple digits this weekend with little to no rain chances expected. Remember to take precautions to avoid heat related illnesses if you have outdoor weekend plans.

As August continues, we have received several questions asking why we are using 'unseasonable' to describe this week of high temperatures! This is because the high temperatures across North and Central Texas have been much closer to our record highs for August than our normal average highs. This pattern is expected to continue, with the possibility for afternoon temperatures at DFW on Saturday to tie or exceed the record high.

Extreme heat is expected this week. Everyone is at risk from the dangers of extreme heat, but these groups are more vulnerable than most. Ensure that your loved ones and neighbors are safe from the heat and remain Weather-Ready. weather.gov/safety/heat-during