I must have missed something - why wouldn't they be? Eggs don't need to be refrigerated - that is just something grocery stores put in the heads of people by stocking them in the dairy department. No egg ever gets refrigerated around here and in the summer I keep my house thermostat at 85 degrees. They can sit for weeks at that temperature and still be fine, so one overnight in a coop won't hurt a thing. Heck, I often gather my eggs, then put them all in an unused nest box because there are too many to carry and I forgot to bring my egg basket with me. They sit there until next day when I can get back with the egg basket and carry them back to the house.
Thank you for this. I have eaten eggs that have been in the nestbox for over 24 hours, but always wondered what if it were 36 hours etc. I do keep most of my eggs on the counter when the weather is cooler, but did wonder about the summer when I keep my temps anywhere from 80 to 85.