It depends on what you like. I spent my entire life until I was 27 in the frigidity of Northern Minnesota. After that, I rather enjoy the fact that nearly every day in Austin is a t-shirt day.
If you're coding, you're in the air conditioning when it's 95°F and out in the mornings/evenings. I spent 9 months in Austin starting in February and it's not that bad. I grew up in Atlanta (85-95°F and 80% humidity) and summertime was about the same but the winter was nicer.
I still miss the food. I can get the quality here in NYC in a restaurant near the barrio but not the prices.
Citing air conditioning doesn't mesh very well with describing the weather as awesome. Lows of >70 with humidity mean you're going to need some AC help sleeping, too.
