3 weeks old chicks outside at night ok?

[Uff Da]

Question since you are also in az- is the low of 70 degrees at night warm enough to keep the lamp off through the night? Thanks for all your helps!

Yes. I am in Montana and my 4-week-olds are outside with no heat and it gets down to the 20s still. I'm fact, my chicks have yet to experience 70 degrees day or night, haha!