January in Castiglione di Sicilia is the rainiest and the coldest month of the year. In January, the weather in Castiglione di Sicilia is typically cold. Average daily high temperature in January is about 9 degrees above zero. On average, Castiglione di Sicilia has 16 rainy, 8 sunny, 5 partly cloudy, and 2 cloudy days in January. The rains are usually heavy. January as well as February, March, and December is considered the most uncomfortable time to visit Castiglione di Sicilia.