The weather is going to freeze and my cucumbers are not done growing. Should I pick them?
Picking Cucumbers Early
Certified GKH Gardening Expert
If they are of adequate size, go ahead and pick what you can. You can also cover the plants, though the cold itself may be too much. Here is more information: https://www.gardeningknowhow.com/plant-problems/environmental/protect-plants-in-freeze.htm