So I was looking at the margin requirements for E-minis (in the .CVS on this CME Group page) and saw all sorts of odd contracts: CME GULF COAST SEA ACUM HURRICANE BOSTON LOGAN BINARY STRIP FUT DETROIT METRO AIRPT RAINFL MTHLY LAS VEGAS WEEKLY AVG TEMP FUTURE What the heck are those?
I should mention that I know about Intrade and their "unusual" markets like who's going to win American Idol. But the point here is that CME would have weather contracts.