Coldest day of fall so far at 61F. Still overcast, but it didn't feel like the sky was about to fall, which was nice.

I got lucky last night. Picked up a shard of glass near work yesterday morning (lubricated by the water, no doubt). I waited until afternoon to fix the flat (swapped tubes), pumped it up and rode home. Rolled the bike into the garage, turned around to walk out, and heard a loud hiss. The base of the valve stem had come free of the tube. I'm really glad it did that AFTER I got home!