Ours would do that. It work always go to a higher temp in the middle of
the night and it would get super hot. I ended up just locking in temp to
be between 65-68, and it’s been fine ever since.
Same here. We live in IL and today, well actually right now as we speak
it is -9 degrees, and yup Nest is offline. Mind you, I also have a wired
connection.