@roger,
it's 46 deg f here now and will drop to 43 deg f before sunrise. ...then it's forecast to reach 58-60 deg for a high again. On sunday this'll all pass and we'll be back to 66-70 F and 50-55 F at night - sliding through our brief winter.
So far we've not had a lasting or killing frost, if there was any (none in Sarasota). Typically, it tends to hit 25-60 miles miles north of Tampa Bay and a bit inland. There was a brief frost but nothing that killed any landscape or crops just YET.