How long can eggs be left in the coop?

[SmallsChickens]

The reason I ask this is because I will be going back to school and I do not have a close place for my chickens to be. I was just curious if in cold Wyoming weather if eggs could be left to sit for up to 5 days at a time.

 

[iron chicken]

They can be left for a day or 2 but no longer if you can help it.