Ignore your calendar. It may read August (unless you haven’t changed it yet—it always takes me a couple days), but in the NFL, it’s injury month.
Football is inherently a dangerous sport (hence all the concussion lawsuits), so really, they’re all injury months. But each year, without fail, a handful of important players will fall awkwardly, pull up lame or find some other creative way to get hurt before the regular season. This is why I recommend holding your draft as late as possible. That way you’ll know which players are damaged goods instead of drafting a player in mid-August only to see them tear their ACL in a meaningless preseason game (looking at you, Jordy Nelson).