I don't know for sure thats an interesting topic. I'm not sure the cold would hurt them as much as the snow. If there were a lot of extreme temperaturechanges it would probably affect them more. I would think their straightness would be effected at the very least. They also may have started to 'rot' from the moisture. I'm not going to tell you to shoot them because I wouldn't want you to get hurt. Those arrows might become really expensive if you have to take a trip to the emergency room