Summer/Fall - Florida's longest season extending 6 months from about May thru October is also known as Florida's wet or rainy season. In Central and North Florida we typically start to feel a fall-like coolness and break from high humidity sometime toward the end of October. Some people do not realize it because Florida is abundant in trees that stay green all year long, but we do have deciduous trees in Central and Northern Florida that turn colors and loose their leaves this time of year. South Florida does not really have a Fall.
Winter/Spring - While some may not call our winters real winters, perhaps they are more like a winter/spring combination. This time of year is also known as Florida's dry season. Floridians at this time of year look forward to turning off their air conditioners and opening the windows from around November thru March/April and enjoying the dryer, cooler air and cool breezes. We still have many hotter days during this time (esp. in South Florida) and many colder days (esp. in Northern Florida). The expression, "April showers bring May flowers" was not written for Florida! April is one of the driest months of the year.
Above taken from www.floridasmart.com.
Americans are accustomed to indoor heating during the cooler months. Temperatures range anywhere from 65º F to 78º F. In Florida, many public buildings and private homes are air-conditioned, with temperatures reaching as low as 65º F. You may find that your outdoor winter clothes are too heavy for indoor use in winter, and that your summer street attire is not warm enough indoors in air-conditioned situations. It helps to dress in layers, adding and subtracting clothing as necessary. Other useful items include blankets in winter, and if you do not have air-conditioning, a fan in summer.