January in Gargnano is the coldest month of the year. In January, the weather in Gargnano is typically cold. Average daily high temperature in January is about 3 degrees above zero. On average, Gargnano has 9 cloudy, 8 rainy, 7 sunny, and 7 partly cloudy days in January. The rains are usually heavy. January as well as February, March, April, and May is considered the most uncomfortable time to visit Gargnano.