My MG does well in winter.
The gotcha is that I also have Raynaud's syndrome, which stops blood flow to my hands and feet in cold temperatures. Essentially, my hands and feet go from warm to turning purple and hit-with-a-hammer cold after just minutes of cold exposure.
At the same time, stores and restaurants in my community crank up their thermostats to ridiculously high temperatures in the winter. Nearly all of them do that. It's bizarre, because it more expensive and customers are dressed for cold weather.
So, winter is the seasonal version of Catch-22. MG vs. Raynaud's. Dress for winter vs. dress for warm temps in stores.