The only effect the weather has on me is my choice of clothing and footwear. I never really understood why the weather effects people so much. I have a friend who sulks when it is not sunny and when it rains and all winter long. If I felt that way, I would move south so I could be happy.
I understand that some people suffer from Seasonal Affect Disorder (SAD) when there is less sunshine. I could never allow myself to get to that point and for my overall well being, like I said, I would move. Some people say they cannot move, but that is not true. If your health and wellbeing is affected by the weather, you CAN and SHOULD move for a better quality of life. If you don't take that option, then you just have to suffer through it, I suppose.
I actually love seasonal weather. A chill gets rid of being sluggish, for sure. Having a cold snap effects nothing, as far as I am concerned. When it is sunny and humid and horribly hot, we go inside to the air conditioned house; and in the winter when it is cold, we go inside to the heated house. Neither has a terrible effect on me, so I do feel pretty lucky in that regard.