Your granddaddy might have told you, "Boy, get out there the day or two before a cold front, because the deer are gonna move like crazy." Many whitetail authorities still advise it. In my opinion it's a good idea for when the weather turns bitter and snowy in December, but it's a big myth for October. I don't believe bucks feel any urgency to get up and run to feed, even if they detect an approaching front in autumn. Why would they? Most of the males are already fat as pigs. Besides, there are grains, clovers, forbs, mast and green browse everywhere to munch on. What's more, before a mid-fall cold front the air temperature ranges from slightly warm to hot, with accompanying high humidity, and it's heat that shuts down the deer activity. I can count on one hand the big deer I've seen moving in pre-front heat from October 10 to 20.