Pre-cooling your house at 3 in the Texas summer will last until about 3:30 at the latest.
Thicker, solid walls with more thermal mass that soak up the overnight cool to release throughout the day. Better insulation and air sealing. Trees, roof overhangs, and shade cladding to prevent direct sunlight from hitting the house.
"Just add a bigger AC" has been the approach for far too long, and it's not sustainable.
Running AC in the dark night to cool that thermal mass will benefit during the day. Using some energy, but substantially less and at non-peak times.
https://en.wikipedia.org/wiki/Climate_of_Houston indicates 81 is above the average... and again, thick walls aren't the only available approach. Any approach will involve a collection of different tweaks.