With those temps they could stay outside and as long as there fully fewthered or almost feathered they can stay outside mine were probably about 2-3 months old and they stayed ouside when it got down in the 30s and they were all fine hope this helps
Ok i cause imma leave em out tonight. Will they be fine closed in their coop without food or water? Cause i have the door open that leads to the run but the coop itself wont fit the food and water