As I saw somewhere today "100 is the new 90".
(100 F ~= 38 C)
But not to worry, everything is normal.
Climate change is always in the future. What we are seeing is merely weather. It is in the nature of Climate change that you can never observe it because only weather is observable. So everything is fine, Austin will never have a string of days over 110 F, and even when we do it will be a coincidence...