I have owls, people's cats, hawks, foxes & raccoons here constantly, so I can't free range once the migratory hawks show up here in August. I built predator proof pens, and they each have a shade gazebo with perch, so on the warm nights I let them roost in the coop or gazebo, spring & summer, their choice, but I still close all coop doors at dusk, as I don't need mice trying to get in there all night. I notice in October when it gets dark earlier, the foxes are more brazen, my chickens all go into the coop before dusk on their own, all I do is say goodnight & sweet dreams as I close the chicken doors. I think it is safer to spend the night in the coop, because rats, mice, raccoons & foxes will be disturbing their sleep, even if they can't get in, they have all damn night to try!
Ever hear a disturbed Rooster at 2am?! I have!!!
Got half dressed & ran out there with a flashlight chasing off 3 foxes & trying to get the flock to "shut the flock up" in the middle of the freaking night! LOL
I don't need bitching & complaining from neighbors, so mine are put in the coop from October on, regardless of weather, it's just too much of a pain in the wazoo with night predators & the commotion they stir up.
Ok just saw that you entire coop is in an enclosed run...you have more mild weather too. So I guess you want to be sure no mice can get into their feed or no predator will be disturbing their sleep.
Where I live there can be days or weeks of bad weather, so I had to build a larger coop knowing they'd rather be indoors those times.