Cooler temps and 2 month old hens

[KMW2021]

We just got 7 2-month old hens, and 3 3-month old hens. I am located near Houston, TX and the weather has been in the 60s/70s this week - however we are expecting a cold front and are expecting overnight temps in the 30s, 1 night forecasted at 21F. We use the OverEz Large chicken coop and put in extra ventilation, and I have pine shavings on the coop floor. We do not have a heat lamp, but could try and rig one up if needed. What are your thoughts? I know many people are in a lot colder places, I'm more concerned about the sudden shift in temp and them being young. We can put them in a wire dog crate in our garage, but the garage is not heated...so not sure if that would even help.

 

[rosemarythyme]

Are any of them Silkies, Frizzles, or other odd feathered birds? Those I might be a little more concerned about.

The 3 month olds should be fine for sure. The 2 month olds... I assume they've been living outside now for at least a few weeks and pretty well feathered out? If so as long as they have protection from drafts and rain/snow I don't see any reason they shouldn't be fine as well.