Trainer in the Garage

I do all my trainer rides in my garage, but it is always heated or cooled. i dont think the cold would hurt it as long no moisture stays on it. I would hate to see surface rust get on your weighted part of trainer.

For almost five years I had my KK Road Machine in the garage.  Seattle isn't WI, but the garage did drop into the low 30s - I have a thermometer just to see.  It did just fine, and usually I had a bike set up in it.  Don't leave the rear wheel with tension on it, though - that can't be good.

Last week I got to upgrade to an indoor workout room, so no more cold workouts for me.  Now I have to get used to room temperature workouts.  First world problem!

I rode all last winter in the garage in Anchorage AK. However, my garage was heated. No problems noted even with the heating/cooling with the opening and closing of the garage.

How's the humidity in WI in the winter time? Anchorage was really dry, so there was no risk from moisture damage.

I had mine set up in the garage all last winter.  My garage gets to be close to outside temperature without the wind chill obviously.  I kept a portable quartz heater next to my setup and would turn it on several minutes before workouts.  After 15 minutes or so, I would turn it off and start to shed some of the three layers I would wear. 

My Kurt has done fine, and no crack in my carbon frame from the changes in temperature.