Predicting the Weather for the week in Missouri, that's the best joke I have heard in a while.
I will say that I saw many that people, myself included, did not have umbrellas for after worlds last year which left many people wet as they were trying to get home. Thursday does look like the most likely day for rain so all teams try to prepare a little bit. You don't want to fly or ride next to a sick student on the way home.