Short vacay: Austin, Denver or Savannah?

[derklink]

Hi folks,

Title says it. My wife and I want to do a short trip 4 to 5 days at the end of October to one of these places. Problem is we like everything, be it hiking, bike rides, live music, bbq, wineries, etc. We'd prefer Denver but are worried it could be too cold already. Savannah still warm and has Tybee Island. Don't know too much about Austin.

What are your thoughts or would you go somewhere else?

Thanks!!