ok, guys how can this not be a simple answer the shutoff is 5 inch's inside my house so they shouldn't be any warm ( its a cold water line ) making it outside unless you mean the cold air going up the pipe which again it's so far inside I am not sure if it could.
So what I did was open the outside faucet letting the water run then turned off the inside valve to shut off the water and to make sure there was no water left in that line, then I closed the outside valve.
this site says to leave it open but they have a drain valve
When is the right time to shut off my outdoor faucets? Avoid frozen pipes and basement floods by following Aquality Plumbing and Heating's 5 easy steps.
aqualityplumber.com