First day back home after a nice, four day trip to Chicago => first commute since Friday. Cool (mid 50s) and cloudy. Just my kind of riding weather. I'll even take it a little cooler if I can have a long sleeve T.
I feel like I can already predict who will still be commuting this winter... those of us (like me) who were in shorts and a short sleeve shirt will be commuting come January. Those people already wearing full-fingered gloves, multiple layers on top including a jacket and gaiter -- probably not. Just guessing. I saw a few people dressed like that the latter this morning.
Chicago was cool. Bikes everywhere. And flat as a pancake. Man, I thought my commute was flat.

Anyway, thanks, Chicago, for a great weekend. Very fun town.