Sweet Neith (dear god, did I just call a spider sweet?!) lives in a reasonably unsheltered corner of our porch. It is very cold here tonight, and I am a little concerned that she will perish. Bud at least has siding to hide under, Neith wouldn't fit any more than a few legs under the siding. She is currently huddled up in a pathetic little blob in the corner (in the picture below, she is the little blobby thing; sorry for the craptacular picture quality). I hope she survives the night, and then when it warms up tomorrow she will find a place to hibernate. Do spiders hibernate?
Ok...following a quick Google search, it seems that Neith and other spiders of her ilk (orb spiders and some others) do not, in fact, hibernate. They live for one year, lay their egg sac, and die during the winter. Sad.
On a related note, tarantulas do hibernate, and some females have been found to live 30-40 years! I think that Bud may be of a hibernating variety as well, but since I am still not sure what kind of spider he is, I don't actually know that.