February in Simpsonville is the windiest month of the year. In February, the weather in Simpsonville is typically warm. Average daily high temperature in February is about 11 degrees above zero. On average, Simpsonville has 14 sunny, 8 partly cloudy, 6 rainy, and 1 cloudy day in February. The rains are usually moderate. February as well as January, March, and December is considered the most uncomfortable time to visit Simpsonville.