What a bunch of whiners.  Kings Island's Winterfest runs Mystic Timbers, even last year when it was around 30 degrees.  Now, I will readily admit that we didn't ride it.  I'm dumb but not plumb dumb.  But I did a lot of people in line to ride it.  I rode Top Gun (now The Bat) when it opened and it was 38 degrees with sleet.  Of course, those were days when I was more determined (or stupid) about riding coasters.