Too soon to have my 5.5 week old chicks outside?

[Rosaj46]

Hi everyone!
I am new to having chickens and just want to make sure they are ready to be outside. These are my chicks and their coop, tonight is going to be their first night outside. They have been without heat in a 65-70 room with a window open for the past week and a half to get them ready for colder temps. But I put them out and they are all cuddled in the corner! Is it too cold for them? Should I add anything to the coop to help they stay warmer?
All of the windows are closed but they have ventilation at the top of the coop, and the thermometer is reading about 48° right now at 10 pm.View attachment 2094678View attachment 2094681View attachment 2094682

I have 5 week old rhode island reds. Its 40° here is ot too cold for them?

 

[rosemarythyme]

I have 5 week old rhode island reds. Its 40° here is ot too cold for them?

As long as they're in good health, have been off heat and have had some exposure to those temperatures, not it's not too cold.