I took these pictures about two weeks ago. I just came across them as I was going through some of my photos from this past weekend.
I was taking Maya to the bus, and I thought there was frost all over the lawn. We got outside, and it was obvious that it was spider webs. There were webs all over the lawn, the roses, the pumpkins, our lights...everywhere. I assume that a sack of spider eggs hatched in the night. The webs were all gone by the afternoon.