From the National Weather Service in Birmingham:

An upper level disturbance will move through the Southeast Today. Temperatures across the area will warm to above freezing during the morning hours. Precipitation will spread into the area from west to east beginning this morning. While initially dry at the surface, the temperatures aloft will moisten up through the morning. As the ice crystals, snow aloft begins to fall from the top of a column of air this morning it will moisten the dry air at the surface and eventually make it to the surface. This will lead to the possibility of a mixture of rain and snow along and near the Interstate 85 corridor, and a mix of light snow and sleet near and along the Interstate 20 corridor. High uncertainty continues with this system with temperatures just above freezing and timing of precipitation. A couple of degrees difference could result in either all rain or all snow. Temperatures will likely increase through mid morning and then drop as the afternoon begins. Some of the models are indicated the best chance for the wintry mix will be between 12 and 6 pm.