Yikes!

What that is, there on that rooftop, is frost.  It was a patchy frost -- really patchy... in fact, the rooftops at school seem to be about the only frost I see, but still, it's frost.

Last year's first patchy frost was Oct. 4.  In 2009, it was Oct 1.
It's Sept 15... It was in the 30's when I woke up.  Wow...