It’s been snowing off and on would they be okay outside. it’s insulated and warmer in the camper it’s in.
Nope, they need to be warm and sunny. You could start some new ones in May/June under a grow light and put them outside when it is warm and sunny. Or rethink your whole grown situation. Growing in a cold dark camper is not going to work
I would put a light in there if you don’t want foot tall plants. I’ve grown 15 or so autos in 7 years and they can be finicky under great conditions. I’ve stunted 4 of them for different reasons. The light helps heat everything up too.
You could place a mirror behind your plants in the camper to redirect the light towards the plants when the sun tracks off them. You could place 2 mirrors and have one for the am sun and one for the pm sun. To bounce the light back at then when the sun tracks off the direct plant spot in the window.
Assuming that you cannot plug a light there (no hook up) or do not want to buy a cheap 15-20watt cloner led light to supplement the sun in the camper. Those lil off brand cloner leds are so cheap. Probably cheaper than mirrors. Unless you found a free or cheap mirror on Craigslist or at goodwill.