During the harsh winter of 1989-1990, 26 Floridians died of hypothermia. Because of normally mild temperatures, Florida homes often lack adequate heating and insulation and the Florida outdoor lifestyle leads to danger for those not prepared. In addition to the actual temperature, when the wind blows, a wind chill (the temperature that it feels like) is experienced on exposed skin.
When freezing temperatures, or low wind chills are expected, the National Weather Service will issue warnings or advisories.
For more information, view the Severe Weather Awareness Guide for Florida (PDF) from the State Emergency Response Team (SERT).
The wind chill is the cooling effect due to the combination of temperature and wind. It is expressed as the loss of body heat.