Hi and from Ohio. So glad to have you aboard. At 6 weeks, they still like temps to be around 70 and above day and night time temps. I would give them a couple more weeks to get fully feathered. Good luck.
Yep, you can put them outside now. It sounds warm enough where you are, and 6 weeks is a good age. Best indicators are your chickens though, if they look cold and huddle together, take them back in.