You mention parking the car in the garage - does your garage have ventilation? Heat?

You may be parking in a steam bath.

If the weather is good, try parking outdoors with a couple of windows cracked.

If the weather is damp, close your garage up, when it is dry (as dry as it gets in your area) open up some ventilation - if you have a double hung window, open the top and bottom 3 inches, if not try to get one vent up high and one down low.

At one of our fire houses, a cement block garage with brick veneer, we actually added low level vents in the garage doors - they can be closed as well.

Cold dry air should remove a lot of moisture.

Parking in the sun with windows cracked during the day can do a lot.

In the '60s Tom McCahill, known as the father of car testing, advised his readers to keep their windows cracked as the heat of the sun, and condensation caused more damage to the instruments and interior of cars than a bit of rain once an a while.

As a teen, I took his advice to heart and always cracked my windows unless rain was due. Ventvisors really changed this game.