I'm sure your tire guy loves you!
Instead, just have him pop the beads and reseal them. Tires lose air in cold temps. Everything screws up when it's really cold.
Tires do not lose air because it’s cold tires lose pressure when it’s cold because the air contracts. It is possible that if the temperature goes down enough that the lowering air pressure can make the bead around the tire a little leaky and in that sense it could but it would need to be very very very cold for that to happen.