Even through the winter, propane tanks can remain outdoors and endure the elements. Ideally, overwinter your tank under your grill's cover to ensure adequate ventilation and protection from snow and ice.

Do propane tanks need to be covered?

When storing your propane tanks in the winter, it's important to know that freezing temperatures aren't a problem for propane—in fact, you don't even need to cover your tank when storing it outdoors in the winter. ... In warm weather your propane tank can still be stored outdoors on a flat, solid surface.

Can you put a cover over a propane tank?

A cover over a propane or butane tank will not cause pocketing of gas, but it could hinder circulation by blocking breezes or winds. Ensuring that at least 50% of the perimeter of the tank is open will meet the minimum requirements of the code, assuming there are no other features that foster pocketing.