My choice of fragrance is based more on emotional need (which may indeed be in response to the weather) than on the temperature. A warming amber can become downright steaming and sultry in the summer heat. A light floral can be an optimistic statement, a life affirmation in the dead of winter. I strongly suggest that you try mixing it up, look inward for inspiration.
Pretty much anything with a strong vetiver component, along with the lighter-to-medium-weight fougere scents, have been comfortable all-year scents for me. Generally speaking, I stay away from bright citrus scents and aquatics in winter (it's wet enough here) and rich, sweet orientals in summer, but these are just my personal preferences.