I just looked at the weather, and while they are still calling for scattered thunderstorms, the current temp forecast is 90 degrees. I live close enough to the Indianapolis Speedway that I am going to try and pre-register Thursday, and then just ride to and from the track. If it is going to be that warm, then will just put an extra pair of gloves in my seat bag and not worry about anything else. Currently I cycle in Keen Commuters so I don't have to worry about socks

Now the big question is which bike to take, but I've a few days to ponder that one