Average low temps that are ok for 8 week olds

[baileybrood]

I started my second batch of chicks a bit early this year. They are now 8 weeks old and really need to get outside! I have a small coop and run set up for them outside within the big girls pen. Our temps are still getting down around 30 at night here. I put them outside today for a few hours while it was around 50 degrees and they seemed to enjoy it. I brought them back in tonight since it was getting down to 25 degrees tonight.

What is the average low temp that would be ok for these chicks to stay out all night?

Thanks!

 

[gimmie birdies]

8 weeks old is getting to be okay maybe 45 degrees at night. I have an 8 week old roo with a silky hen out side getting 30 at night, but he sleeps under her wing and just recently started letting him be in his out side pen. with mom. they have shelter lay box to sleep in too.