Weather does affect many of us. I think it's more the humidity (or lack of) that's mostly the cause. Also some of the problem stands with what stage in COPD a person is.

Lungs respond to weather changes differently, and some people experience major lung problems when the weather changes. For some the changes don't have to be very drastic, like a 20 degree change. Others don't respond until the changes are significantly greater, like a 70 degree change in a short amount of time. If you are affected by weather changes, you can try to stay inside in a relatively stable temperature and humidity. If you don't have much choice, bundle up and cover your mouth if you must go out.

Hi Pam
Winter is the time of yeah when you most likely to get an infection, however if you continually get chest infections do make Sue you speak with your Dr or Consultant
Take care
Eric x

Yes it can definitely effect your breathing situation depending on your co morbidities associated with COPD. Mine is very moist environments.