January in Mountain Home is the coldest month of the year. In January, the weather in Mountain Home is typically cold. Average daily high temperature in January is about 1 degree above zero. On average, Mountain Home has 13 partly cloudy, 8 sunny, 4 rainy, 4 cloudy, and 2 snowy days in January. The rains are usually moderate. January as well as February, March, November, and December is considered the most uncomfortable time to visit Mountain Home.