It's probably not that extreme most of the time, but there are plenty of sundown towns in the rural US. If the other poster is a minority it can certainly get ugly just by them being there at any time. Just because it isn't nighttime doesn't mean that they will necessarily refrain from targeting them.

Hell, even being a white man who doesn't look like a local can get nasty looks and unwanted attention. I'd say it's risky to be there for anyone who doesn't have a local traveling with them.