Hot enough we can no longer sleep upstairs in the un-air-conditioned rooms. We have an enormous attic fan which pulls in cooler air most nights & makes it tolerable with a little help from an oscillating fan blowing across the bed, but tonight we ran the attic fan for an hour & it hadn't cooled off a bit up there. Maybe that's because it's still 86° OUTside.
Lord I miss Colorado!
We have a futon in the living room for exactly that reason - if it's too hot or too cold to sleep up there, we can move downstairs to the a/c or the woodstove, whichever.
So my sweet man is slumbering peacefully on the futon, the furballs seem to think this is just the ticket, & I wonder if I'll get any sleep at all unless I go into that sauna upstairs to retrieve my CPAP machine. 
We have a futon in the living room for exactly that reason - if it's too hot or too cold to sleep up there, we can move downstairs to the a/c or the woodstove, whichever.