We have had a particular hen who seems to like her winter hatches, last winter it was December first (low 20s for temps) and the winter before that she hatched on Jan 28th (8/8). She is on track to be wanting to set in January again this year, but time will tell.And I just heard the weather report. Peachy! Supposed to get down to 29 on Tuesday night, hatch night. Wonderful. <sigh> Well, it's not like I didn't know that would be a possibility, putting eggs under her in October.
Just make sure the hen is draft free and the nest is easy enough to get in and out of so the chicks can't fall out and get separated.... she will do the rest.