We are now in the second week of November here in our corner of New England, and spring ephemeral wildflowers are breaking out of dormancy before the ground freezes. There are trillium, wild leeks and jack in the pulpit shoots nudging up from the ground in the warm, wet weather we have been experiencing this Fall. The deep freeze that we are due with the onset of Winter will kill them back, at the cost of some of their stored energy reserves. Some adult plants may not survive, which for slow growing leeks and trillium means a number of years before they are replaced with mature specimens. I will monitor these patches and see how they respond.
It is a small data point, and means little in isolation. Repeated stresses like this would be more worrisome.