Thermometers

It may seem like a lot of constraints, but it's a Samurai Sudoku, so you should only have deal with one or two at a time.

Not a commentary on computer operating systems at all.

Temperatures rise in much the same way wet paint does not. This puzzle is as easy as watching paint dry.

Someone might have been born in 1972. Maybe. Or there could be some other reason that’s a good year. It is, though.