Don't overlook the fact that this is an election year. I have no idea if there is a gubernatorial election in WI this year, but if there is, I'd bet that's the cause.

I live in Tampa Bay, Florida. In 2002, the year of Jeb Bush's re-election campaign, it suddenly got dry as hell around march, all the way till the following year. They even had signs up on US 19 that said "Think it's dry now? Wait a month" with a potleaf. They do this to help their crime fighting statistics and what not (yes, weed is a crime, YOU CRIMINAL!).