Hi Anthony,
I am 54 and although I'm not in a wheelchair, cold weather greatly affects me and especially when walking with my cane. I've always wondered myself if is caused by the cold. Were you able to stand in past winters?
If you don't get other immediate replies, here are two other active AMN communities where you can ask this question.
www.inspire.com
https://healthunlocked.com/amneasier
Steve