When you travel with your pet, keeping tabs on the weather can help you make the trip more safe and fun for everyone. The hottest months are usually July and August with an average temp of 49°F, while the coldest months are January and February with an average of 19°F. The snowiest months in Celerina-Schlarigna are April, May, November, and January, with each month seeing an average of 5 inches of snowfall.