Why the disparity in buck behavior? I’m convinced it has a lot to do with what constitutes “normal” for area whitetails. Kentucky deer are used to dealing with heat in early fall, so maintaining normal movement isn’t that big a deal. Northern deer, however, which are typically larger-bodied and with denser hair, get sluggish any time temps climb above the 70s in fall. The same can be true of wind speed. Here in the Midwest any wind over 20 mph can put deer on their bellies like they’ve been body-slammed. But I’ve hunted for many years in western Kansas, where a 20 mph doesn’t affect those prairie deer in the least. In short, the key is to learn how deer react to weather locally, and not make any general assumptions.