The forecast high on Sunday is 34, and the forecast low Sunday night is 10. This is a bit unusual here, and it’s the point at which I begin to worry about the pipes freezing.
The first thing to freeze is usually the upstairs vanity, especially if it sits on an outside wall. You can reduce the chances of a disaster if you open up the doors and let the air circulate in there. Make sure there is nothing blocking the air flow to the pipes.
It’s not a bad idea to turn off the water, if you’re leaving for the week. That way, if anything bad happens, you’ll see it when you turn the water back on, not when you make it up again to find out that the whole house flooded.