Water Temp at closing in September (usually the weekend after Labor Day) is usually right around 68 and falls to around 50 by the time we hit late November.
Depending on old man winter, the pool usually freezes around mid-late December and stays frozen through February. Again, that timetable varies depending on weather conditions.
As just about every pool owner knows, it's all about finding a personalized maintenance program that works for you....and sticking with it. That's why I really enjoy this forum. So much knowledge and experience, I learn something new every time I come here.