January in Rust is the coldest month of the year. In January, the weather in Rust is typically cold. Average daily high temperature in January is about 4 degrees above zero. On average, Rust has 11 partly cloudy, 7 rainy, 7 sunny, and 6 cloudy days in January. The rains are usually light. January as well as February, November, and December is considered the most uncomfortable time to visit Rust.