Yea, it never does seem to fully be the same each time.  I did not see any black ice I just saw some ice on the lights in the flower bed and the trash can.  One un-forecasted thing which happened yesterday was that it got cold and rainy much sooner than forecast.  It was raining during tennis at 4:30, not hard enough to cancel, and the temps quickly dropped into the 40's.   By 6 it was raining hard enough to wet everything.