Hey there yourself.

Water temperatures are less than 80, more than 70, probably still more than
75.  Average visability is 50 feet.  That means it may be 0 and it may be
100.  Anything outside that range is exceptional.  Our visibility depends,
in large part, on how much rain we've had recently, how close you are to one
of the inlets, and how much the wind has kicked the seas up.  You pays your
money and you takes your chances.

Lee

I just got back from the Key's yesterday. Water temp on the Spiegel
Grove was 78 and vis about 60ft. A weekago dove the Miller lite off of
Pompano and had a water temp of 79 vis maybe 40ft.
If in the Keys and you want to dive some of the area wrecks you might
have some trouble finding a shop to go with. At least that was the
problem I had this past week. Tourist numbers down after the
Thanksgiving week. So hard to get enough people to go.
                                                     Al