Question about moving plants inside during surprise snow storm?

Hello all - still have several weeks left and we're getting hit with a surprise snowfall. I have three plants in five gallon pots that I move inside to an inclosed porch every night, but now we're due for 4 inches of snow. Porch will be plenty comfortable for them temp wise for the next couple days, but there's not a lot of natural light. I do have grow lights that I used when the plants were seedlings - should I turn them on for a couple of hours? It's my first grow and I'm a little out of my depth here.

Thanks for any help you can offer!

Yeah supplemental light would be great but low intensity, watch the watering they will just about go dormant if temp not kept above 55

Shit, I have had plants outside in snow many times. Freeze warnings would concern me, but not frost. Frost actually gives some nice colors to flowers.
Shake the snow off. As long as temps recover the next morning, you'll be fine.

Why do you think you have several weeks left?