February in Grenoble is the cloudiest month of the year. In February, the weather in Grenoble is typically cold. Average daily high temperature in February is about 3 degrees above zero. On average, Grenoble has 14 rainy, 7 sunny, 6 partly cloudy, and 2 cloudy days in February. The rains are usually heavy. February as well as January, March, April, and May is considered the most uncomfortable time to visit Grenoble.