January weather forecast in Isa

January in Isa is the most freezing month of the year. In January, the weather in Isa is typically freezing. Average daily high temperature in January is about 21 degrees below zero. On average, Isa has 23 cloudy, 5 partly cloudy, and 3 sunny days in January. January as well as February, April, October, and November is considered the most uncomfortable time to visit Isa.