Spent 5 months in Crystal River, FL. This was our 6th year spending some months in Florida (2-5 months). I'd say that the weather was probably fairly typical. Never been there in November and it was quite nice. December wasn't bad, but slightly cooler. January was cooler for sure, but it's January, what do you expect. In fact, I golf in a league and we had some chilly mornings, but it usually warmed as the day went on. Late January was nice though. February & March were nice, usually 60s - 80s. Lots of Michiganders in our park as well as other Great Lakers and Canadians. We are accustomed to varying temps and conditions. We left our awning out nearly all winter.
We don't like it too warm, especially at night. Had to use our heaters more than previous years. The rain was a bit more early winter, especially December. Our golf course was actually closed for a few days in December due to water. I even had to use my ball retriever to recover my ball and it was in the fairway.