January in Hialeah is the coldest month of the year. In January, the weather in Hialeah is typically warm. Average daily high temperature in January is about 24 degrees above zero. On average, Hialeah has 13 sunny, 10 partly cloudy, 6 rainy, and 2 cloudy days in January. The rains are usually light. January as well as February and December is considered the most comfortable time to visit Hialeah.