You may beat around a bunch of Pro V1x's all summer, but come fall and winter, the chill in the air gets a little more pronounced. Cold-weather golf is a different beast: more clothes restrict turn and speed, colder temperatures affect the physics of golf balls (flight, compression, etc.). Greens are either softer or harder (depending on the area in which you live).
In particularly cold weather, you may want to sacrifice your pride and play a lady's ball. The Precept Lady is a fine choice, and long the favorite of decent amateur players.