I moved to Houston in 1987 and did not open my car windows for about 3 years until I drove one day to Austin. I've been a few times to Dallas and further North but the humidity is still quite high and you will be in the Tornado Alley. IMO, nothing beats the Texas Hill Country, it's 5-10 degrees cooler than the cities and it is plain awsome. We've been living here for 13 years and still enjoy every minute of it.
Stop. We don't need any more immigrants to the HC!