Tonight will kill a lot of plants and then it warms up for a few days again. I have 2 tomato plants in pots. They could have been moved if I’d known sooner. Too late....
Still, if you are able to pick them, (even the green ones) they can last for weeks on a counter or other available surface, depending on degree of ripeness. (I’m probably telling you something you already know) I brought in a pepper plant last fall, and it produced in excellent health until late spring, when it finally succumbed to insect infestation.