January weather forecast in Nagano

January in Nagano is the snowiest, the cloudiest, and the most freezing month of the year. In January, the weather in Nagano is typically freezing. Average daily high temperature in January is about zero. On average, Nagano has 18 snowy, 6 cloudy, 6 partly cloudy, and 1 rainy day in January. The snowfalls are usually heavy.