I live in Florida, too. I find layers the best... usually it really warms up in the afternoon almost anytime of the year. But mornings can be down-right chilly. The best $20 (yes, they were only that at the time) I ever spent was arm warmers. In the spring I'll wear them early in the AM even w/ my sleeveless jersey or tank! Easy to roll up in back pocket. Unless it is really cold I hardly ever wear long sleeves. I do short sleeves and arm work and vest (vests that help block wind are another super idea). If really cold a jacket instead of vest. I just think arm warmers block wind/cold best. And if it gets warm easy to remove. With long sleeve jerseys...just cant pull up or roll up those sleeves.

Can't believe we are talking about cool weather. Still above 90 here. I am mostly running right now and it is sooooooooo hot!