Can you incubate chicken eggs after they were in the refrigerator overnight?
Yes, one night at lower than idea temperatures should not effect the hatch. This is natures way of allowing for eggs laid in a natural environment that may drop quite cold at nights. Many hens will not brood until they have collected a clutch of eggs. They will leave the first few eggs unprotected for hours at a time but once they have enough eggs in a clutch they will set on the eggs almost constantly, leaving only for occational food and water and to defaecate.