Triple‑Digit Heat Returns to Austin – A Sweltering Week Under a High‑Pressure Dome and a Gulf Storm on the Radar

It looks like the Texas sun isn’t ready to take a break. A strong high‑pressure ridge has settled over the Southern Plains, and it’s doing exactly what a ridge does best: packing the skies over Austin with clear, blistering sunshine and pushing daytime temperatures well into the triple‑digit range.

For the next several days, you’ll likely see highs hovering around 100 °F to 105 °F, with heat‑index readings that feel even hotter – think 115 °F or more. The heat is dry enough that the humidity isn’t oppressive during the day, but come nightfall the story changes. Dew points are expected to sit in the 70s, meaning those evenings will feel oddly sticky, with lows lingering in the high‑70s. It’s the sort of night that makes you wonder why the air feels so heavy after a day of scorching, dry heat.

Local officials have already issued a Heat Advisory for Lampasas County and Milam County, and meteorologists at KXAN – Kristen Currie, Nick Bannin, Freddy Vela and the rest of the team – are reminding everyone to stay hydrated and limit outdoor activity whenever possible.

On the upside, the lack of rain is being framed as a benefit for the Highland Lakes watershed. With fewer showers, the lakes can move water more efficiently and the rivers are finally showing signs of recovery after months of low flows.

Earlier this month, on July 8, Austin logged its first triple‑digit day of 2026. That milestone feels like a prelude to what could become the hottest week of the year if the ridge hangs on.

Meanwhile, a new player has entered the picture in the Gulf of Mexico. Tropical Storm Bertha formed Monday evening (July 15) in the northeast Gulf, and forecasters are watching it like a slow‑moving train along the coastline. The current consensus is that Bertha will hug the Gulf, weakening to a post‑tropical system before it reaches the Texas shore over the weekend. In other words, Austin’s residents can probably breathe a sigh of relief – the storm looks too weak to make a noticeable impact locally, though some rain and breezy conditions may flirt with the Gulf side.

All in all, expect another week of relentless sun, soaring heat indexes, muggy evenings, and a distant eye on Bertha as it tries to find its way home. Keep water handy, wear a hat, and maybe plan an indoor activity for the hottest parts of the day.