Maybe a silly question

I’m a first time chicken parent and maybe I’m overthinking it, but what do you do with your chickens if all day thunderstorms are in the forecast?

They’re 4 weeks old and have just made the transition from brooder to coop not long ago, so they’re still so little in the grand scheme of things. Should I put them back in their coop for the rest of the day before the storm starts up? They still don’t seem to know to go back into the coop at night (we have to physically put them there still), so I’m not sure they’d know to go in their if it gets a lil crazy out there. On the other hand, my husband feels like they’re covered in their run and will have to get used to less than perfect weather anyways? I’m not sure.

(Picture of the man of the coop for tax)