January weather forecast in Idaho Falls

January in Idaho Falls is the most freezing month of the year. In January, the weather in Idaho Falls is typically freezing. Average daily high temperature in January is about zero. On average, Idaho Falls has 10 cloudy, 9 partly cloudy, 8 sunny, 3 snowy, and 1 rainy day in January. The snowfalls are usually light. January as well as February, March, April, and November is considered the most uncomfortable time to visit Idaho Falls.