28° F...Virtual class day, right?

For those of you in cooler places than the Deep South of the US, do your students ask if class can be moved to online because it's slightly below freezing, sunny, not windy at all, and there's no ice on the ground or is that just here? I mean, we don't get many <30° F days here, so I understand the shock especially since it was in the low 80s a week ago.