The temperature does sound good - be on the watch for sudden drops, though. Here in New England even after a run of mild nights, it can drop down toward freezing.
Also, when others responded that they need to be enclosed, that means safe from any predators that may try to tear into them at night. Do you know what kinds of predators are in your area? Even sometimes neighbors' dogs can be a terror. I use a sturdy plywood shelter with half inch hardware cloth (it's a wire mesh - very heavy duty) over every opening, and locks on the doors (raccoons here are really ingenious at breaking in). I also have electric tape around the night pen.
What kind of shelter do you have?
BTW - my little nutballs don't cuddle. They'll sit bill to tail in a row along the outside wall. sigh.
