There was a Reddit thread a little while back about how cold you feel outside is largely a matter of mindset, and there were people that live in Siberian-type climates saying how funny they think it is to come and see people dressing in so many layers when it’s “only” in the single digits, not even in the negatives. And then I read that being outside in the cold briefly without a heavy jacket does not make you sick, unless you are under-dressed for a truly prolonged period of time or wet in the freezing cold. So I decided to toughen up, started taking walks in 30° weather, and now I enjoy it.