First Frost Date - Already?

Well, this morning there was frost on the grass and the thermometer in the garden read 27 degrees.  Very early for our area.  I had no warning and did not see this one coming.  There was frost on the cucumbers and they probably won't make it.  I didn't see anything else that looked too bad, but we will see. Anyone else out there get surprised by an early frost?  Let me know.