That's what the regulator does, give you a constant output regardless of the input.
The regulator may have some problems working correctly at 30F. It can collect water and freeze.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk