Planning for the weather is an important factor for making your trip to Valtournenche a success, especially when you’re splurging. The hottest months are usually July and August with an average temp of 50°F, while the coldest months are January and February with an average of 20°F. The snowiest months in Valtournenche are November, August, December, and February, with each month seeing an average of 9 inches of snowfall.