February in Fort Mill is the windiest month of the year. In February, the weather in Fort Mill is typically warm. Average daily high temperature in February is about 11 degrees above zero. On average, Fort Mill has 12 sunny, 9 partly cloudy, 7 rainy, and 1 cloudy day in February. The rains are usually heavy. February as well as January, March, and December is considered the most uncomfortable time to visit Fort Mill.