I remember there was a time when some group was studying the effects of weather patterns and why rain seems to happen most often over the weekends. They were trying to link it to smog created by people's daily commutes, or something to that effect. I don't know the outcome of the study, but it sure seems like it rains a lot more often over the weekends.
At least it's going to be warmer than the Applefest '02 meet I'll gladly take rain if it means we don't freeze!