In October, the weather in Gressoney-la-Trinite is typically cold. Average daily high temperature in October is about 4 degrees above zero. On average, Gressoney-la-Trinite has 18 rainy, 7 cloudy, 5 sunny, and 1 partly cloudy day in October. The rains are usually heavy. October as well as April, May, June, and July is considered the most uncomfortable time to visit Gressoney-la-Trinite.