Saw this on my Kindle yesterday. Don't know how it got passed up. Sorry.
Believe it or not, people in Florida dress just like any place else. We shop the same stores and wear the same fashions. Only a few days in Summer are really that hot!
Bring clothes to layer. Short sleeve and/or 3/4 sleeve tops. A shirt or light jacket. If it should get cold, layer! We do. Capris are everywhere. Nice ones with a great top will go to dinner. Any day you are comfortable in capris, you will be comfortable in long, light weight pants. We often have cool mornings and warm afternoons.
You don't need a new wardrobe (although it is a good reason to buy one). Just bring what you would wear on a 70-85 degree day at home - plus a good light weight jacket.
Some snowbirds think that you must wear the least amount of clothes you can without getting chill bumps. Not necessary! We do wear white and colors year round. Color is everywhere outside, why not wear and enjoy it!
Hope you enjoy Florida! Sarasota is a beautiful place; right on the water!