Lowest Temp Allowable

[jberger10]

What is the lowest temp the eggs can get before the chicks die

 

[Daidohead]

I do not know the absolute lowest temp. I know of eggs that have been in a 40* fridge that have hatched. I know of incubating eggs that have had temps drop to the 60's for a few hours and most hatched. High temps and low temps for short periods of time don't do the chicks any good, but don't always mean they won't hatch.