I like the weather in spring (April) but not the crowds during easter/spring break.
So I'm going with last week of January/first week of February as my favorite time. Usually the weather is just as nice as in the spring, and there are no crowds at all!
We love the fall. It is nice enough for shorts in the day, but no sweating. The evenings are just perfect as long as you bring a sweater along just in case. Crowds are low and the Wine and Food Festival is happening. Although, I have to say, I would take Disney any time I could get it!
SPRING
especially April. The weather is just about perfect, crowds arent too bad, and the flowers are great. Winter isn't warm enough....at least not when you're trying to escape cold weather.