We were in Vero Beach and Disney during the last week of Feb/first week of March and not a drop of rain the whole time. Hot, too. I guess it's usually dry this time of year but some places looked like they could really use some rain.
We saw a game in Jupiter, one in West Palm, and a Blue Jays-Tigers game in Lakeland. The latter was probably my favorite of the three ballparks. They've really fixed the place up since I was last there maybe five years ago, and the concessions were top notch.
I went to a minor league game in Lakeland a couple years ago. Was nice but not many concessions open. Could pretty much sit wherever you wanted though. Nice little park.