Rolling hills covered with bluebonnets now. Lots of Germans settled in this area in the mid 1800's because the countryside reminded them of Germany. Lots of small towns with plenty of atmosphere. Check out New Braunfels, Boerne, Marble Falls, maybe even as far north as Lampasas. Even though I live in Plano now, actually I prefer West Texas, Abilene, Lubbock, Amarillo etc. but I think you almost have to be raised there to like it, as I was.
You're 3hrs from Corpus and the beach.
We really only have 3.5 bad months of weather every year. June to the middle of September. October through May are wonderful. Summers brutal. Some summers we'll have 20 or more straight days of above 100 degree weather.