Thanks to all who replied.
My computer shows an average of 85.4 over 14 dives (a low of 83.0, and high of 90.0 -- which must have been wet, at the surface, in the sun).
I dove in an old (crushed, seams splitting) 4/3 wetsuit -- lovely to feel less encumbered than my normal 5mm in CZM. I was comfortable in that for the 1st dive, but a bit chilly toward the end of most of the 2nd dives -- enough that I did use a heated vest sometimes (the combo of vest & old 4/3 wetsuit packs up smaller than my newer 5mm).