Sandi,
Maybe you're going to get a break and not have a freeze. The forecast I looked at only indicated 33F for Tuesday night for Austin and that was the most dangerous chance. Are you high or low? That may be the difference between frost/freeze for you. If they don't change it, the rest of the 10 day forecast shows some nice weather for you. 33F is sure in the white frost zone, though. A still, clear night at those temps nearly guarantees hoar frost if there is any humidity at all.
