Jeff,
I always read that any wind speed over 15-20 would severly retard activity. I found this to be UNTRUE.
I saw more deer on the 2 windiest days of the season here (gusts to 35mph).Movement almost seemed to increace. It could have been that the deer were swaping bedding areas or putting on a feed in anticipation of a long storm. Not sure , but saw a ton of deer.
I did have to get out of my stand and sit at the bottom of my tree, but I won't let wind stop me again.